Magnetoimpedance in Perovskite La0.7Sr0.3MnO3 Ceramics

被引：0

作者：

Liu, Hua ^{[1
]}

Huang, Qingfang ^{[1
]}

Hu, Jifan ^{[1
]}

机构：

[1] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

来源：

PIERS 2011 SUZHOU: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM | 2011年

关键词：

GIANT MAGNETOIMPEDANCE; MAGNETORESISTANCE; IMPEDANCE;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The La0.7Sr0.3MnO3 manganite prepared by sintering method exhibits a giant magnetoimpedance (GMI). Its AC magnetoresistance Delta R/R-0 could reach -9.53%, magnetoimpedance Delta Z/Z is -3.05% at 200 kHz under a low field of 1.8 kOe at room temperature, which is more sensitive than its dc colossal magnetoresistance. With an increase of ac frequency, there is a maximum of the GMI effects. To investigate the intrinsic origin of the GMI effect, electrodynamics theory was used to simulate the frequency dependence of magnetoimpedance effect. The influences of frequency, permeability and sample thickness upon the effect of giant magnetoimpedance were investigated.

引用

页码：48 / 51

页数：4

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