Magnetoimpedance in Perovskite La0.7Sr0.3MnO3 Ceramics

摘要：

　　The La0.7Sr0.3MnO3 manganite prepared by sintering method exhibits a giant magnetoimpedance(GMI).Its AC magnetoresistance △R=R0 could reach-9.53%,magnetoimpedance △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.

作者: Hua Liu Qingfang Huang Jifan Hu

作者单位: State Key Laboratory for Crystal Materials,School of Physics Shandong University,Jinan 250100,China

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)

会议地点: 苏州

会议语种:英文

页码: 48-51

在线出版日期: 2011-09-01（万方平台首次上网日期，不代表论文的发表时间）