Magnetoresistance plateau in La2/3Ca1/3Bi
x
Mn1 ? x
O3 granular system |
| |
| Authors: | Guoqing Zhang Chunxu Pan Guodong Zhang |
| |
| Affiliation: | (1) Department of Physics, Wuhan University, Wuhan, 430072, China;(2) Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan, 430072, China;(3) Department of Materials Engineering, Wuhan University, Wuhan, 430072, China |
| |
| Abstract: | The effect of doping additional Bi on the magnetoresistance (MR) of La2/3Ca1/3B
x
Mn1−x
O3 was investigated. It is found that traditional colossal magnetoresistance (CMR) peak can only be observed in the x<0.05 samples and the peak value decreases with the increase of x, but the x≥0.05 samples show a magnetoresistance plateau above 200 K because of the presence of additional (La,Ca,Bi)-O layers. Moreover,
this MR plateau is enhanced for the segregation of the La, Ca, and Bi elements.
Funded by the Foundation for the Author of National Excellent Doctoral Dissertation of China (FANEDD) (No. 200233) |
| |
| Keywords: | perovskite manganite phase segregation composite magnetoresistance plateau |
| 本文献已被 SpringerLink 等数据库收录！ |
|
