Effect of Tb-Mn substitution on DC and AC conductivity of Y-type hexagonal ferrite

被引：64

作者：

Ali, Irshad ^{[1
]}

Islam, M. U. ^{[1
]}

Ashiq, Muhammad Naeem ^{[2
]}

Iqbal, M. Asif ^{[1
]}

Khan, Hasan M. ^{[1
]}

Karamat, Nazia ^{[2
]}

机构：

[1] Bahauddin Zakariya Univ, Dept Phys, Multan 60800, Pakistan

[2] Bahauddin Zakariya Univ, Inst Chem Sci, Multan 60800, Pakistan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 579卷

关键词：

Conductivity; Hexaferrites; Microemulsion method; Cole-cole plot; Grain boundaries; ELECTRICAL-PROPERTIES; MAGNETIC-PROPERTIES; NICKEL-ZINC; MOSSBAUER; NANOSIZE; RAMAN;

D O I：

10.1016/j.jallcom.2013.06.182

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single phase nanostructured Tb-Mn substituted Y-type hexaferrites with nominal composition Sr2Co2-xMnx TbyFe12-yO22 (x = 0.0-1, Y = 0.0-0.1) were synthesized by the normal microemulsion method. The values of activation energy calculated from DC electrical conductivity increases with the substitution of Tb-Mn suggests that the conduction mechanism in the present ferrite system is polaron hopping. The appearance of broad Debye peaks in imaginary electric modulus plots (m '') show the existence of relaxation process in all these samples. The complex impedance plane plots show a single semicircle, which indicates the capacitive and resistive properties of the materials are due to contribution of grains and grain boundaries in ferrites. It is observed that Tb-Mn Substitution makes comparatively small difference on the grain resistance, but leads to a remarkable rise of grain boundary resistance. High values of quality factor are obtained required for power applications and high frequency multilayer chip inductors. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：576 / 582

页数：7

共 40 条

[1] x Effects of divalent ions substitution on the microstructure, magnetic and electromagnetic parameters of Co2W hexagonal ferrites synthesized by sol-gel method [J].