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We have prepared a set of polycrystalline samples of the metallic copper oxide La4BaCu5-xCoxO13+δ(0 ≤ x ≤?0.35) and have measured the resistivity from 4 to 800?K. All the resistivities show metallic temperature dependence with a small magnitude less than 2 mΩcm at 800?K, indicating that the metallic conduction is robust against impurities. The robust metallic conduction further suggests that this class of oxide is a promising candidate for electrical leads at high temperature, which might replace platinum. A detailed measurement and analysis on the Hall resistivity have revealed that at least two components are responsible for the electrical conduction, in which a large number of electrons of moderate mobility coexist with a much smaller number of holes of extremely high mobility. This large electron density well screens the impurity potential and retains the metallic conduction against 7% impurity doping. [ABSTRACT FROM AUTHOR]

We have prepared a set of polycrystalline samples of the metallic copper oxide La4BaCu5-xCoxO13+δ(0 ≤ x ≤?0.35) and have measured the resistivity from 4 to 800?K. All the resistivities show metallic temperature dependence with a small magnitude less than 2 mΩcm at 800?K, indicating that the metallic conduction is robust against impurities. The robust metallic conduction further suggests that this class of oxide is a promising candidate for electrical leads at high temperature, which might replace platinum. A detailed measurement and analysis on the Hall resistivity have revealed that at least two components are responsible for the electrical conduction, in which a large number of electrons of moderate mobility coexist with a much smaller number of holes of extremely high mobility. This large electron density well screens the impurity potential and retains the metallic conduction against 7% impurity doping. [ABSTRACT FROM AUTHOR]

A tunable Mach-Zehnder interferometer with a two-dimensional photonic crystal structure using copper oxide high-temperature superconductor is proposed. This photonic crystal is composed of rods of which axes are perpendicular to the two-dimensional anisotropic copper oxide plane. By tuning the temperature of the superconductor, the refractive index of the superconductor as well as the photonic band gap can be changed. The photonic band structures of two-dimensional photonic crystals composed of the superconductor are calculated by using the plane-wave expansion method, and interference properties are investigated by using the finite-difference time-domain method. For our designed photonic crystal Mach-Zehnder interferometer, the simulation results show that the light transmission can be modulated from 92.7% to 1.4% with different temperature distributions. [ABSTRACT FROM AUTHOR]

We present measurements of the ac susceptibility of sintered yttrium barium copper oxide pellets prepared by a melt processed solid state reaction method, with different amounts of ZnO added. The measurements were performed versus temperature T for several different ac magnetic field amplitudes Hac in the presence of static bias magnetic fields Hb directed along Hac. For all our samples, for each choice of Hac, the imaginary part of the ac susceptibility versus T traces a peak, denoted by χ″max, centered at a temperature denoted by Tmax.We also find that plots of the values of χ″max vs Hac and of χ″max vs Tmax generate curves that display a valley. Calculations of hysteresis losses, exploiting a critical-state model where the critical current density jc=α(T)/Bn, reproduce the experimental data quite well. [ABSTRACT FROM AUTHOR]

In metalorganic deposition using trifluoroacetates (TFA-MOD), CuO nanocrystallites in calcined film, which influence the critical current density (J[sub c]) of the resulting film, have seldom been considered before. CuO nanocrystallites ripen and grow during the calcining process at 200-250°C and grow into large CuO grains in the YBa[sub 2]Cu[sub 3]O[sub 7-x] (YBCO) film. The final diameter of the grains is about 0.1 µm. When highly purified coating solution is used, suppressing the creation of nanocrystallites in the precursor film is an effective way to obtain high-J[sub c] YBCO film because the nanocrystallites consist only of CuO. We obtained the highest-J[sub c] YBCO film on LaA1O[sub 3] single crystal with a calcining process of 9h43m at 200-250°C. It was 141 nm thick and had a J[sub c] of 7.5 MA/cm² (77 K, 0 T), as measured by the four-probe method. The firing process of TFA-MOD still has several unsolved problems; why can H[sub 2]O and HF gas diffuse quickly within the film? These phenomena can be explained by a model with a quasiliquid consisting of Y, Ba, Cu, O, H, and F. The H[sub 2]O and HF can move quickly in the quasiliquid network within the film during the firing process. According to the model, we can get more conversion of CuO nanocrystallites into quasiliquid by increasing the amount of water vapor. J[sub c] of the film was increased from 3.3 to 4.5 MA/cm² (77 K, 0 T) by increasing the humidity from 4.2% to 12.1% during the long calcining profile of 66h40m at 200-250°C. These results confirm the above model. CuO nanocrystallites in precursor films induce nonstoichiometric metal contents in the quasiliquid. Isolated CuO grains in YBCO film indirectly cause nonstoichiometric quasiliquid in other areas. Such nonstoichiometric quasiliquid leads to non-YBCO materials such as BaO, Y[sub 2]O[sub 3], and Y[sub 2]Cu[sub 2]O[sub 5]. Thus, films derived from non-highly purified coating solution and ones prepared with an... [ABSTRACT FROM AUTHOR]

Iron-based superconductors are the second kind of high temperature superconductors after copper oxide superconductors. It promptly triggered a new wave of superconductivity research. Similar to copper oxide, iron-based superconductors also have layered structures. There is no consensus on whether the pairing symmetry is still applicable to different Fermi configuration configurations. Scanning tunneling microscopy (STM) can measure the surface morphology and tunneling spectrum at atomic scale, and the information of electronic density of States is also studied from the microscopic point of view. It is an important spectral method for studying superconductivity. Scanning tunneling microscopy has accumulated some valuable results in iron-based superconductivity. In this paper, the double-gap study of heavily doped (Li1-xFex) OHFeSe samples is introduced. It was found that the electronic Fermi surfaces of (Li1-xFex) OHFeSe were folded to form two groups of Fermi surfaces inside and outside; it corresponds to two superconducting energy gaps observed in tunnel spectra. The experimental results are in good agreement with the theoretical calculation based on s± pairing, and the theoretical results based on s++ pairing are quite different. In addition, scanning tunneling microscopy shows that: The superconducting energy gap structure of Fe-based superconductors doped with the best electron and whole Fermi surface is nodeless S± wave, which provides important experimental data for the study of electron nematic phase of iron-based superconductors by scanning tunneling microscopy. [ABSTRACT FROM AUTHOR]

Presents a study which measured the critical current intensity and normal-state resistivity in granular bismuth lead-based copper oxide superconductors. Experimental details; Results; Critical-state models framework.

Presents a study that examined the influence of oxygen on the structural stability and superconducting properties of copper-oxide-based superconducting ceramic perovskite. Methodology; Correlation between the temperature and partial pressure of the sample; Analysis of the x-ray diffraction patterns of the samples.

Presents a study that proposed a simulation model of the behavior of the Josephson weak link of yttrium-barium copper oxide superconductors. Details of the simulation model; Examination of the current-voltage characteristics of the superconductors; Evaluation of the dependence of the step heights of the Josephson junction on microwave excitations.

Presents a study that analyzed the thickness dependence of the properties of yttrium-barium-copper-oxide superconductor films. Methodology; Influence of film thickness on the critical currents of the superconductor films; Examination of the microstructure of the samples.

Presents a study that examined the sintering of bismuth-strontium-calcium-copper-oxide superconductors. Methodology; Analysis of the microstructure of the superconductors; Examination of the metallurgical properties of the samples.

Presents a study which examined copper oxide superconductors using nuclear magnetic resonance and nuclear quadrupole resonance. Experimental procedures; Results of spin-lattice relaxation; Conclusion.

Investigates the effect of the lanthanide substitution on the superconductivity in copper-oxide systems Ba[sub2]YCu[sub3]O[sub7] and (La, Sr)[sub2]CuO[sub4]. Information on the sample preparation; Temperature dependencies of the resistivity and the Meissner signal for several members of Ba[sub2]LnCu[sub3]O[sub7]; Significance of the band calculation.

The superconducting current density, Jc, of Y1Ba2Cu3O7-δ (YBCO) is greatly influenced by hole doping levels. Hole doping is mainly dominated by oxygen ordering, so the postannealing process is one of the essential factors for practical applications of YBCO superconductors. However, little research has been reported about the variation in Jc by annealing time. In this study, the optimal annealing conditions were studied using homogeneous c-axis oriented YBCO thin films prepared by the pulsed laser deposition method. As a result, Jc (at 77 K, 0 T) increased from 0.3 to 5.3 MA/cm2 with an annealing time in the range of 0–12 h. This result suggests that annealing for tens of hours is essential for obtaining high Jc samples, even if the film is 250 nm thick. The oxygen diffusion process was examined by applying the one-dimensional diffusion model. [ABSTRACT FROM AUTHOR]

The high-temperature SmBa 2 Cu 3 O 7−δ (Sm-123) superconducting system, which is characterised by a high critical transition temperature ( T c ) and a high critical current density ( J c ), suffers severely from the effects of Sm/Ba substitution in the superconducting Sm-123 phase matrix, and especially so for large, single grains grown in air, resulting in a significant variation in T c at different positions within a single grain. As a result, the suppression of Sm/Ba substitution in the Sm 1+x Ba 2−x Cu 3 O 7−δ phase matrix (SmBCO, where x represents the Sm/Ba substitution level in the SmBCO system) is critical to achieving good superconducting properties in this material. Here we report the use of Electron Probe Micro-Analysis (EPMA) to investigate, adjust and optimise the composition of mechanically-stabilised standard Ag-SmBCO bulk single grains. We show that the substitution levels within these samples changes linearly within increasing distance from the vicinity of a single crystal seed used to nucleate the single grain growth process. In addition, we identify a constant value of x of −0.080 for the composition-adjusted Ag-SmBCO bulk single grain. This is the first time that the quantification of the Sm/Ba substitution level in the SmBCO system has been measured accurately and directly using EPMA, and suggests clearly that the Sm/Ba substitution can be suppressed effectively in air. This research will provide significant insight into the development of a process to suppress Sm/Ba substitution even further in superconducting SmBCO single grains in the future. [ABSTRACT FROM AUTHOR]

The fabrication of robust sensors for the monitoring of emerging contaminants in real-life water samples has received much attention. In this study, copper oxide and carbon nano-fragment modified glassy carbon electrode (CuO-CNF/GCE) based electrochemical sensor was developed for the simultaneous monitoring of dihydroxybenzene isomers such as catechol (CC) and hydroquinone (HQ). The structural and morphological characterization of CuO-CNF/GCE was done by scanning electron microscopy - energy dispersive X-ray (SEM-EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). The electrochemical oxidation of HQ and CC was investigated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The CuO-CNF/GCE exhibited high current sensitivity for CC and HQ. The oxidation peak currents of CC at the CuO-CNF/GCE were linear function of concentration 0 μM to 150 μM, with detection limit of 2 μM (at a signal-to-noise ratio of 3) ( R 2  = 0.997) and the oxidation peak currents of HQ were linear function of concentration 3 μM to 80 μM, with 1 μM detection limit (S/N = 3) ( R 2  = 0.995). The CuO-CNF/GCE was successfully used for detecting the two dihydroxybenzene isomers in real-life water samples with high selectivity. [ABSTRACT FROM AUTHOR]

The new organic–inorganic compound [(C 3 H 7 ) 4 N] 2 Cu 2 Br 6 has been synthesized by slow evaporation method at room temperature and characterized by single X-ray diffraction, differential scanning calorimetry and impedance spectroscopy. In fact, the latter is crystallized at room temperature in the triclinic system ( P 1 ¯ space group) with the following unit cell parameters: a = 9.578(2)Å, b = 9.578(2)Å, c = 11.964(2)Å, α = 102.138(6), β = 104.518(3) and γ = 112.747(6). The atomic arrangement can be described by an alternation of organic and inorganic layers stacked along [1 1 ¯ 1 ¯ ] direction and made up of [N(C 3 H 7 ) 4 ] + and [CuBr 3 ] - groups, respectively. The differential scanning calorimetry (DSC) studies disclose a presence of phase transitions located at 353 K. In addition, some electrical characteristics of (impedance, conductivity, and modulus) of the sample have been investigated in a wide range of frequency (100 Hz-2MHz) and temperature (330–375 K) ranges. Both impedance and modulus analysis exhibit the grain and grain boundary contribution to the electrical response of the sample. The equivalent circuit is modeled by a combination series of two parallel R P –CPE circuits. The temperature dependence of the alternative current conductivity (σ g ) and bulk relaxation frequency (ω p ) confirm the observed transitions in the calorimetric study. Moreover, the temperature dependence study of frequency exponent (s) is investigated to explain the conduction mechanism in the different parts, which is attributed to the non overlapping small polaron tunneling (NSPT) in the region I and II. [ABSTRACT FROM AUTHOR]

An optimized two-step electrochemical deposition technique for the synthesis of a Cu2O/graphene platelet composite from copper acetate and a graphite rod is demonstrated. In the first step, graphene nanoplatelets were electrodeposited onto a stainless steel substrate from the graphite rod and then Cu2O NPs from copper acetate solution were electrodeposited onto the same electrode through the second electrodeposition step. Raman spectroscopy and X-ray photoelectron spectroscopy were performed to confirm the quality of the graphene nanoplatelets produced. X-ray diffraction studies revealed the successful formation of Cu2O nanoparticles. Transmission electron microscopy and field emission scanning electron microscopy were carried out to study the morphology, and the microscopic images revealed that the graphene surfaces were evenly anchored with Cu2O nanoparticles. The electrocatalytic behavior of the Cu2O/graphene platelet composite was analysed through cyclic voltammetry, differential pulse voltammetry and amperometric studies. The electrochemical studies revealed the utilization of the prepared material for non-enzymatic electrochemical sensing of H2O2. The amperometric studies showed the sensitivity and limit of detection of the prepared Cu2O/graphene platelet composite to be 52.8595 μA μM−1 cm−2 and 34.32 nM, respectively. [ABSTRACT FROM AUTHOR]

The semiconductor properties and protective role of a single-component Cu 2 O layer were studied using cyclic voltammetry, Mott–Schottky (MS) tests, electrochemical impedance spectroscopy (EIS), in-situ laser Raman spectroscopy, and electrochemical atomic force microscopy techniques (ECAFM). The results suggest that the single-component Cu 2 O layer exhibits p-type semiconductor properties. An interesting phenomenon was observed; the carrier concentration, and the diffusivity of the Cu + vacancies increased progressively as the oxide layer formation potential increased. The oxide layer was composed of granular cuprous oxide; relatively large Cu 2 O particles were formed on the surface under − 120 mV (Ag/AgCl) and − 60 mV (Ag/AgCl). At a film formation potential of − 120 mV (Ag/AgCl), the thickness of the oxide layer (Cu 2 O) was approximately 6.046 nm, while it was 0.5594 nm at 0 mV (Ag/AgCl). The Cu 2 O layer formed at a lower potential offers superior stability and protection. [ABSTRACT FROM AUTHOR]

Core-shell novel nanocarriers were synthesized using copper oxide nanoparticle as a core and hyperbranched polyglycerol (HPG) as the shell. The shell with hydrophilic properties is solubilized and dispersed on copper oxide nanoparticles. The chemical precipitation and ring opening polymerization methods were used for the synthesis of nanoparticles. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) showed the size of copper oxide NPs to be 8 nm and hyperbranched polyglycerol coated copper oxide nanoparticle to be 70 nm. X-ray diffraction (XRD) showed the purity and FT-IR determines the entire coating of copper oxide nanoparticles. Tetracycline as a soluble drug was loaded to this nano-metal polymer with the efficiency of 92% encapsulation and more than 35% of the drug released through dialysis during five days. This slow and gradual released of antibiotic can propose a promising alternative as an antibiotic carrier for chronic infection. The MTT assay showed that this nano metal branched polymer loaded with tetracycline was not cytotoxic to L929 and MCF7 cell lines. [ABSTRACT FROM AUTHOR]

Solution- p-type thin-film transistors, consisting of sol-gel-processed CuO films, were fabricated. The optoelectric properties of sol-gel-processed, CuO-based back gate thin-film transistors were investigated, and a detectivity of 1.38\times 10^ 11 (cm Hz ^ 1/2~\textW^-1) was achieved. This detectivity for sol-gel-processed CuO thin-film transistors is higher than that of the previously reported layered two-dimensional material systems and comparable to that of devices based on a one-dimensional nanowire system. Our results indicate that the sol-gel–processed, CuO-based photodetector system is a promising candidate for applications, such as near-infrared imaging devices, sensors, solar cells, and p-type inks for future printed electronics. [ABSTRACT FROM AUTHOR]

The highly c-axis oriented La 1.9 Ce 0.1 CuO 4 (LCCO) film was prepared on SrTiO 3 (STO) substrate by pulsed-laser deposition (PLD). The identification and characterization of the LCCO film was determined by X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). Spectroscopic ellipsometry (SE) measurement was performed on the LCCO film in 0.5–4.13 eV range. The complex pseudodielectric function of the LCCO film was reported by Drude and Lorentz oscillators in this work. Critical point analysis on third-derivative spectra of the Lorentz contributions was accomplished to obtain the interband transition energies. The results indicate that the interband transitions are mainly related to the copper-oxygen planes. The metallic behavior of the pseudodielectric function, which is a common feature in all known electron-doped superconductors, can be obviously observed in the LCCO film. [ABSTRACT FROM AUTHOR]

Properties of nanodispersed powder copper oxide, synthesized during arc sputtering of copper in a gas mixture of low pressure oxygen, were studied. It was shown that the particles possess nanometer size and narrow size distribution. The issue of reduction, recrystallization and sintering of nanodispersed powder were discussed. [ABSTRACT FROM AUTHOR]

It is highly important to explore the influence of counter anions on the morphology in order to have a desired nanostructure with unique properties. Therefore, in this research work the influence of counter anions on the morphology of copper oxide (CuO) nanostructures is presented using copper chloride and copper acetate salts. A significant role of counter anions on the morphology of CuO nanostructures is observed. The hydrothermal method is used to carry out the synthesis of CuO nanomaterial. The prepared CuO nanostructures are characterized by scanning electron microscopy and X-ray diffraction techniques. The prepared CuO nanomaterial exhibits porous nature with thin nanowires and sponge like morphologies. The dopamine sensing application was carried for exploring the electrocatalytic properties of CuO nanostructures. The presented dopamine biosensor exhibited wide linear range for detection of dopamine from 5 to 40 µM with sensitivity of 12.8 µA mM cm. The limit of detection and limit of quantification were estimated in order 0.11 and 0.38 µM respectively. The developed dopamine biosensor is highly sensitive, selective, stable and reproducible. The common interfering species such as glucose, ascorbic acid and uric acid showed negligible change in the current when same concentration of dopamine and these interfering species was used. The fabricated biosensor could be used for the determination of dopamine from real blood samples. [ABSTRACT FROM AUTHOR]

Specific capacitance and energy density are found increasing greatly after the incorporation of certain amount of copper (Cu) into nickel oxide (NiO) electrode. In this work, a series of binary nickel copper oxides is synthesized directly on flexible lightweight carbon fiber paper substrates as binder-free electrodes. The correlation between the Ni/Cu ratio and supercapacitor performance is revealled. The highest specific capacitance achieved is 1711 F g −1 at a higher discharge current density of 5 A g −1 , which is significantly higher than the NiO sample without Cu incorporation. The success in high loading of active material growth on lightweight carbon substrate leads to a very high specific capacitance of 637 F g −1 per total weight of the active material and the substrate at 1 A g −1 . The asymmetric supercapacitor full cell, composed of nickel copper oxide as positive electrode and reduced graphene oxide as negative electrode, reaches up to a very high energy density of 70 Wh kg −1 . The energy density per total mass of all the active materials and substrates is fantastically high, 40 Wh kg −1 , which is of great practical importance in applications. The remarkable electrochemical performance is attributed to the desirable composition and the synergistic effect between nickel and copper. [ABSTRACT FROM AUTHOR]

High conductivity, large specific surface area and excellent performance redox materials are urgently desired for improving electrochemical energy storage. However, with single redox material it is hard to achieve these properties. Herein, we develop ultra-fine CuO nanoparticles embedded in three-dimensional graphene network grown on carbon cloth (CuO/3DGN/CC) to construct a novel electrode material with advantages of high conductivity, large specific area and excellent redox activity for supercapacitor application. The CuO/3DGN/CC with different CuO mass ratios are utilized to fabricate supercapacitors and the optimized mass loading achieves the high areal capacitance of 2787 mF cm −2 and specific capacitance of 1539.8 F g −1 at current density of 6 mA cm −2 with good stability. In addition, a high-flexible solid-state symmetric supercapacitor is also fabricated by using this CuO/3DGN/CC composite. The device shows excellent electrochemical performance even at various bending angles indicating a promising application for wearable electronic devices, and two devices with area 2 × 4 cm 2 in series can light nine light emitting diodes for more than 3 minutes. [ABSTRACT FROM AUTHOR]

Thin films of nitrogen-doped cuprous oxide (Cu2O:N) have been deposited by means of direct-current and radio-frequency sputtering using a metallic copper target and a mixture of argon, oxygen, and nitrogen for generating the plasma. The doping with nitrogen appears to significantly increase the electrical conductivity of the films. All samples exhibit a temperature-activated transport behavior. It is shown that the activation energy decreases proportionally to the reciprocal distance between nitrogen atoms, which indicates that a constant fraction of nitrogen is most likely substitutionally incorporated on oxygen site in the Cu2O lattice and acts as an acceptor. Nevertheless, Raman measurements suggest that molecular nitrogen can also be found in the samples, bound at different sites inside the bulk and at the surface. [ABSTRACT FROM AUTHOR]

A mechanochemical method has been proposed for preparing copper oxide (CuO) nanostructures with different morphologies including nanowires, nanorods and nanoparticles. The various nanostructures of CuO were synthesized by the reaction of copper (II) acetate monohydrate and diammonium oxalate monohydrate with different ratio in solvent free conditions. The obtained nanostructures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR) and Brunauer-Emmett-Teller (BET) surface area analysis. It has been found that the morphology of the obtained structures can be altered by adjusting the synthesis conditions including the ball milling time and the molar ratio of the starting materials. The charge storage ability, cycle stability and ion transport of the obtained CuO nanostructures were investigated by means of cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) cycling and electrochemical impedance spectroscopy (EIS) in 6.0 M KOH. It has been shown that the charge storage ability of the product is strongly affected by its morphology whereas the cycle stability is influenced by crystallinity. The highest specific capacitance for CuO was found to be 113.5 F g −1 for nanoparticles at scan rate of 1 mV/s. [ABSTRACT FROM AUTHOR]

Presents the findings of a study which shows that the magnetic irreversibility of Re-substituted Hg-1223 superconductors, is larger than that of the unsubstituted compounds. Discovery that the partial substitution of Hg by Re stabilizes the phase; Disadvantages of using superconducting copper oxides with extreme anisotropy in applications.

Focuses on a study which investigated magnetic relaxation in ceramic cylindrical samples of bismuth-lead-strontium-calcium-copper oxide high temperature superconductors as a function of applied magnetic field for a constant decay rate of that field strength. Analysis of the variation of the alternating current susceptibility versus time after magnetic field removal; Method by which data had been obtained; Results and discussion.

Presents a study that examined epitaxial thin films of copper-oxide-based isotropic metallic oxide and superconducting heterostructures. Analysis of the crystalline properties and interfaces of the samples; Factors to consider when using copper-oxide-based isotropic metallic oxide materials as a normal-metal barrier; Investigation of the texture of the thin films.

Details a study which analyzed the properties of calcium[sub1-x] sirconium[subx]copper oxide infinite layer films grown by laser ablation deposition. Experimental procedures; Microstructure of the film; Electrical and magnetic properties of the film.

Presents a study that investigated the krypton fluoride laser -induced ablation and patterning of yttrium-barium-copper-oxide superconductor films. Methodology; Analysis of the different regimes of laser-material interactions; Examination of the transition temperatures and critical current densities of the samples.

Presents a study that measured the microwave surface resistance of yttrium-barium-copper-oxide thin film superconductors on lanthanum aluminum oxide substrates. Methodology; Correlation between the critical current density and the temperature of the thin films; Determination of the metal stoichiometry of the thin films.

Presents a study that measured the tracer diffusion of silver in yttrium-barium-copper-oxide superconductors. Methodology; Analysis of the microstructure of the superconductors; Determination of the diffusion depth profile of silver.

Examines silicon dioxide and silicon nitride passivation layers on yttrium barium copper oxide superconductor thin films. Thermal evaporation of silicon dioxide on the film's surface; Information on the zero resistance temperature of yttrium barium copper oxide films; Investigation on the interface and surface properties of the thin films.

Reports the deposition of yttrium barium copper oxide and bismuth strontium calcium copper oxide superconducting thin films performed using the single-laser pulse-induced forward transfer technique. Information on the optical absorption of the amorphous films as a function of wavelength; Measurement of the film thickness; Analysis of the superconducting properties of the laser transferred layers.