1. Structural, optical, electrical, dielectric, molecular vibrational and magnetic properties of La3+ doped Mg–Cd–Cu ferrites prepared by Co-precipitation technique.
- Author
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Arshad, Muhammad Imran, Hasan, M.S., Rehman, Atta Ur, Akhtar, Maria, Tung, Le Duc, Amin, N., Mahmood, Khalid, Ali, Adnan, Trakoolwilaiwan, Thithawat, and Thanh, Nguyen Thi Kim
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MAGNETIC properties , *FERRITES , *REMANENCE , *COPRECIPITATION (Chemistry) , *ELECTRICAL resistivity , *DIELECTRICS - Abstract
Ferrites are among the most frequently investigated materials mainly due to interesting and practically different properties. Therefore, easily and cost-effective lanthanum doped Mg 0.5 Cd 0.25 Cu 0.25 Fe 2-x La x O 4 (x = 0.0, 0.0125, 0.025, 0.0375 and 0.05) ferrites were synthesized by a co-precipitation route, a comprehensive characterisation of their structural, optical, electric, dielectric, molecular vibrational, and magnetic properties were carried out. X-ray diffraction analysis confirmed the formation of a cubic spinel structure. Variations in frequency bands were also observed with amplification in optical band gap energy (2.95 – 3.38 eV) due to La3+ ions insertion. The electric resistivity had opposite trends at low and high temperatures with increasing La3+ content. The Curie temperature, activation energy, and drift mobility were also determined to have values consistent with the semiconducting behavior of the soft ferrites. The saturation magnetization (M S) has a maximum value 49.385 emu/g with remanent magnetization (M r) was 34.928 emu/g and coercivity 661.4 Oe for La3+ concentration x = 0.05. The minimum dielectric loss was observed for La3+ concentration x = 0.025. Moreover, the resistivity (ρ) has a maximum value of 7.95 × 104 Ω cm for La3+ concentration x = 0.025. The calculated frequency range of La3+ doped Mg–Cd–Cu ferrites was detected in the microwave range (3.36 – 10.80 GHz), suggesting the potential application of the materials in longitudinal recording media and microwave absorbance. [Display omitted] • La3+ doped Mg–Cd–Cu ferritessamples synthesized via co-precipitation. • The lattice constant increased with La3+ substitution. • At 303 K, for La3+ concentration x = 0.025, maximum resistivity was observed. • Magnetization saturation was increased with La3+ concentration. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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