Ac conductivity analysis of nanocrystallite MgFe2O4 ferrite

被引：16

作者：

Mahato, Dev K. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Phys, Patna 800005, Bihar, India

来源：

MATERIALS TODAY-PROCEEDINGS | 2018年 / 5卷 / 03期

关键词：

Oxides; Sol-gel growth; Electrical conductivity; MAGNETIC-PROPERTIES; MAGNESIUM FERRITE; NANOPARTICLES; BEHAVIOR;

D O I：

10.1016/j.matpr.2017.10.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

MgFe2O4 (MFO) ferrite was prepared through sol-gel auto-combustion method. The auto-combusted powder was sintered at temperature 1150 degrees C. in air to study the ac conductivity properties. The formation of cubic spinel phase was confirmed by X-ray diffraction analysis. It represented a soft agglomerated structure composed of ultrafine crystallites. The reciprocal temperature dependence of sigma(dc) followed Arrhenius equation. The activation energy was found to be 0.54 eV. This indicated that the conductivity was due to hopping motion of small polaron. The large mismatch of Z" and M" peaks in spectroscopic plot revealed that the carriers can contribute to conductivity by hopping motions. (C) 2017 Published by Elsevier Ltd. Selection and Peer-review under responsibility of 6th NATIONAL CONFERENCE ON NANOMATERIALS AND NANOTECHNOLOGY (NCNN VI - 2017).

引用

页码：9191 / 9195

页数：5

共 22 条

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