Crystal field distortion of La3+ ion-doped Mn-Cr ferrite

被引：38
作者：
Abdellatif, M. H. [1 ]
El-Komy, G. M. [2 ]
Azab, A. A. [1 ]
Salerno, M. [3 ]
机构：
[1] Natl Res Ctr, Solid State Phys Dept, Giza 12622, Egypt
[2] Natl Res Ctr, Electron Microscope & Thin Film Dept, Giza 12622, Egypt
[3] Ist Italiano Tecnol, Mat Characterizat Facil, Via Morego 30, I-16163 Genoa, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 447卷
关键词：
Magneto impedance; Raman spectra; Spinel ferrite; Rare earth doping; RARE-EARTH IONS; GIANT MAGNETOIMPEDANCE; MAGNETIC-PROPERTIES; RAMAN; SPECTRA; PHOTOMAGNETIZATION; MICROSTRUCTURE; SUBSTITUTION; TRANSITION;
D O I：
10.1016/j.jmmm.2017.09.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ion doping in crystals can result in lattice modifications triggering interesting magnetic and optical properties of the material, understood as a compensation of the crystal deformation and microstrain. We investigated the spinel structure of Mn-Cr ferrite after doping with La3+ ions. The structure was first characterized by X-ray diffraction and high-resolution transmission electron microscopy. Raman scattering spectra were taken that could also be interpreted in terms of crystal field distortion due to La3+ ion doping. On assessing the magneto-impedance of the doped ferrite, it showed giant magneto-impedance behavior, with a strong drop of over 50%. The saturation magnetization was characterised by vibrating sample magnetometer and was found to be 20.25 emu/g with remnant magnetization of 1.47 emu/g. (c) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：15 / 20
页数：6
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