Influence of Gd Doping at A Site upon the Magnetic Structure of La0.7-xGdxSr0.3MnO3 Systems
PENG Zhen-Sheng1, LIU Ning1,2, CAI Zhi-Rang1, GUO Huan-Yin1, TONG Wei2, ZHANG Chang-Jing2, ZHANG Yu-Heng2
1Department of Physics, Suzhou Normal College, Suzhou 234000
2Structure Research Laboratory, University of Science and Technology of China, Hefei 230026
Influence of Gd Doping at A Site upon the Magnetic Structure of La0.7-xGdxSr0.3MnO3 Systems
1Department of Physics, Suzhou Normal College, Suzhou 234000
2Structure Research Laboratory, University of Science and Technology of China, Hefei 230026
Abstract： We investigated the magnetism of systems La0.7-xGdxSr0.3MnO3 (x = 0.00, 0.10, 0.15, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70) by M-T curves, M-H curves, and electron-spin-resonance (ESR) spectra. The experimental results indicate that the system is in a ferromagnetic long-range order at low-doping level; the samples of x = 0.30 and 0.40 show cluster-spin glass behaviour; and the antiferromagnetic characters are observed at ≥ 0.50. For the samples of x = 0.30 and 0.40, the ESR spectra demonstrate that the phase separation occurs above the Curie temperature.
PENG Zhen-Sheng;LIU Ning;CAI Zhi-Rang;GUO Huan-Yin;TONG Wei;ZHANG Chang-Jing;ZHANG Yu-Heng. Influence of Gd Doping at A Site upon the Magnetic Structure of La0.7-xGdxSr0.3MnO3 Systems[J]. 中国物理快报, 2003, 20(4): 564-567.
PENG Zhen-Sheng, LIU Ning, CAI Zhi-Rang, GUO Huan-Yin, TONG Wei, ZHANG Chang-Jing, ZHANG Yu-Heng. Influence of Gd Doping at A Site upon the Magnetic Structure of La0.7-xGdxSr0.3MnO3 Systems. Chin. Phys. Lett., 2003, 20(4): 564-567.
2003, Vol. 20 
