Effect of Cr3+ substitution on magnetic and electrical properties of (Ni0.3 Cu0.7) Fe2O4 spinel ferrites



Título del documento: Effect of Cr3+ substitution on magnetic and electrical properties of (Ni0.3 Cu0.7) Fe2O4 spinel ferrites
Revista: Revista mexicana de física
Base de datos: PERIÓDICA
Número de sistema: 000453949
ISSN: 0035-001X
Autors: 1
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Institucions: 1Bahauddin Zakariya University, Department of Physics, Multan, Punjab. Pakistán
2National University of Sciences and Technology, School of Chemical and Materials Engineering, Islamabad. Pakistán
3Punjab University, Center of Excellence in Solid State Physics, Lahore, Punjab. Pakistán
4National University of Sciences and Technology, Department of Mechanical Engineering,, Islamabad. Pakistán
Any:
Període: Sep-Oct
Volum: 66
Número: 5
Paginació: 573-579
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés Chromium substituted copper base spinel ferrites (Ni 0.3 Cu 0.7 )Cr X Fe2− X O4 were prepared by Sol-gel method. Structural, magnetic and electrical properties were studied by utilizing an X-ray diffractometer, vibrating-sample magnetometer, and precision LCR-meter using labtracer software. The X-ray diffraction analysis confirmed the formation of single phase fcc structure of the samples. The lattice constant and crystallite size decreased from 8.37-8.23 Å and 53.09-35.36 nm, respectively with increasing content of Cr3+ ions. From Magnetization Vs Applied field loops it was observed that the saturation magnetization decreased and coercivity increased with increasing content of Cr3+ ions. Dc resistivity increased with increase of Cr3+ concentration and decreased with increase in temperature which shows the semiconducting behavior of ferrites. The dielectric constant, dielectric loss, and tangent loss decreased with increase of Cr3+ concentration. The dielectric constant follows bilayer Maxwell Wagner model and Koop’s phenomenological theory while ac conductivity increased with increasing frequency following Jonscher’s power law
Disciplines Física y astronomía
Paraules clau: Electromagnetismo,
Ferritas,
Sol-gel,
XRD,
Constante dieléctrica,
Resistividad eléctrica,
Propiedades magnéticas
Keyword: Electromagnetism,
Ferrites,
Sol gel,
XRD,
Dielectric constant,
Electrical resistivity,
Magnetic properties
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