Structural and Dielectric Properties of the Lutetium (Lu) and Yttrium (Y) Doped Nickel Ferrite

被引：2

作者：

Ugendar, Kodam ^{[1
]}

Markandeyulu, G. ^{[1
]}

机构：

[1] Indian Inst Technol Madras, Dept Phys, Madras 600036, Tamil Nadu, India

来源：

SOLID STATE PHYSICS: PROCEEDINGS OF THE 58TH DAE SOLID STATE PHYSICS SYMPOSIUM 2013, PTS A & B | 2014年 / 1591卷

关键词：

Ferrites; dielectric constant; relaxation; Impedance;

D O I：

10.1063/1.4872952

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structural and dielectric characteristics of NiFe1.925R0.075O4 (R=Lu, Y) were investigated. The material crystallize in the cubic inverse spinel phase with a very small amount of RFeO3 (R=Lu, Y) as the additional phase. Frequency variation of the dielectric constant shows the dispersion that can be modeled with a modified Debye's function, which considers the possibility of more than one ion, contributing to the relaxation. Impedance spectroscopic analysis indicates the different relaxation mechanisms, bulk grain and grain-boundary contributions to the electrical conductivity and capacitance of these materials.

引用

页码：1342 / 1344

页数：3

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