Influence of the substitution of Sm, Gd, and Dy for La in La0.7Sr0.3MnO3 on its magnetic and electric properties and strengthening effect on room-temperature CMR |
| |
Authors: | Qixiang SONG Guiying WANG Guoqing YAN Qiang MAO Wenqi WANG Zhensheng PENG |
| |
Affiliation: | aSpin Electronics and Nano-Materials Research Laboratory, Suzhou College, Suzhou 234000, China;bStructure Research Laboratory, University of Science and Technology of China, Hefei 230026, China |
| |
Abstract: | A series of La0.7–xSmxSr0.3MnO3, La0.7–xGdxSr0.3MnO3, and La0.7–xDyxSr0.3MnO3 (x=0.00, 0.10, 0.20, 0.30) samples were prepared by the solid-state reaction method. The influence of the substitution of Sm, Gd, and Dy for La on the magnetic and electric properties and on the magnetoresistance (MR) was studied through measurements of M-T curves and ρ-T curves. The results showed that: lattice distortion induced by substitution of Sm, Gd, and Dy for La and extra magnetism of substitution had great influence on the magnetic and electric properties of perovskite manganites; substitution of magnetic rare earth element for La was an effective way to change Curie temperature and to strengthen MR in perovskite manganites; and appropriate substitution proportion would generate large MR near room temperature. |
| |
Keywords: | magnetic and electric properties colossal magnetoresistance Curie temperature substitution of magnetic rare earth element for La perovskite manganite rare earths |
本文献已被 维普 ScienceDirect 等数据库收录! |
|