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A study on the effect of swift Heavy Ions Ti7+ @ (100 MeV) irradiated on TGS single crystal has been performed at various ion fluencies. UV–Vis-NIR absorption measurements suggest the tuning of energy gap upon irradiation and Eg values linearly decreased with respect to increase in ion fluences. From the Dielectric study, it has been identified that Curie temperature (Tc) of 〈011〉 TGS decreases to 322 K from 325 K upon irradiation, and peak boarding due to induced strain was also notified therein. Strikingly, upon irradiation the piezoelectric coefficient of the irradiated sample of 〈011〉 TGS got increased from 41 pC/N to a maximum of 52 pC/N for an ion fluencies of 1013 ions/cm2. The other significant results have been discussed in detail. [ABSTRACT FROM AUTHOR]

<011> -oriented TGS crystals have been irradiated by 100 MeV Ag7+ ions at different ion fluence. The crystalline samples thus irradiated by swift heavy ions (SHI) were subjected to various characterization tools such as HRXRD, optical absorption, dielectric, ferroelectric and piezoelectric measurements. AFM measurement was also used for studying the surface feature of samples upon irradiation. The results obtained for the irradiated samples from each measurement have been compared with the pristine ones. The collective results converge to the fact that irradiation-induced surface defects marginally influenced the bulk properties of the crystalline and it can be witnessed from the optical, dielectric and ferro-/piezoelectric behaviors of the crystal after irradiation. The other interesting results have been discussed in detail. [ABSTRACT FROM AUTHOR]

$$\upalpha $$ - $$\hbox {LiIO}_{3}$$ is an excellent optical material exhibiting strong nonlinear optical, piezoelectric and elasto-optic properties. However, its practical applications are limited by the insufficient reproducibility of the mentioned properties caused by the strong influence of the growth conditions, and, in particular, pH of the solution from which $$\upalpha $$ - $$\hbox {LiIO}_{3}$$ crystal is grown. Herein, we investigate to grow bulk size good quality crystals of $$\upalpha $$ - $$\hbox {LiIO}_{3}$$ based on the observed problems during its crystallization process. A systematic investigation was carried out to find the effect of pH on solubility, crystal growth, structural, surface and laser damage properties of $$\upalpha $$ - $$\hbox {LiIO}_{3}$$ single crystals. The structure and phase of $$\hbox {LiIO}_{3}$$ were confirmed by powder X-ray diffractometer analysis. The functional groups of the compound were identified using Fourier transform infrared spectroscopy. Surface defects of the grown crystals were studied by etch patterns. The crystal grown at pH 10 showed 10% optical transmission enhancement in comparison to the crystals grown at pH 2. The indirect optical bandgap of the crystal was reinvestigated using ultraviolet-Visible-near-infrared transmittance spectrum. The laser damage threshold studies of the crystals grown at pH 10 reveal the higher optical radiation stability against 532 nm laser. The second-order nonlinear optical behaviour of $$\upalpha $$ - $$\hbox {LiIO}_{3}$$ crystals grown at different pH conditions have been investigated by using Kurtz and Perry powder technique with Nd:YAG laser pulses at the wavelength of 1064 nm. [ABSTRACT FROM AUTHOR]