Crossover of critical behavior in La0.7Ca0.3Mn1-xTixO3

Authors

Xuebin Zhu, Chinese Academy Of SciencesFollow
Yuping Sun, Chinese Academy of Sciences
Xuan Luo, Chinese Academy of Sciences
Hechang Lei, Ins of Solid State Physics, Chinese Academy of Sci
Bosen Wang, Chinese Academy of Sciences
Wenhai Song, Chinese Academy of Sciences
zhaorong Yang, Chinese Academy of Sciences
Jianming Dai, chinese Academy of Sciences
Dongqi Shi, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

31923

Publication Details

Luo, X., Zhu, X., Dou, S. Xue., Lei, H., Sun, Y., Song, W., Shi, D., Dai, J., Yang, z. Wang, B. (2010). Crossover of critical behavior in La_0.7Ca_0.3MnO₃. Journal of Magnetism and Magnetic Materials, 322 (2), 242-246.

Abstract

Critical behavior of Ti-doped La_0.7Ca_0.3MnO₃ ceramics are studied using magnetization methods. The results show that the paramagnetic–ferromagnetic transition is first order for the undoped sample, then for low-doping samples the mean-field model is suitable, and finally a 3D Heisenberg model is satisfied for higher doping samples. These findings demonstrate that the critical behavior of the magnetic transition for manganites is sensitive to Mn-site doping.