Magnetoresistance and hysteresis phenomena of (La0.75Bi0.25)(0.67)Ca0.33MnO3

作者：Xia Z C^*; Wu Y Y; Zhu G F; Hu A Z; Feng X N; Wang Y; Xiong C S; Yuan S L; Tang C Q

来源：Journal of Magnetism and Magnetic Materials, 2008, 320(3-4): 368-373.

DOI：10.1016/j.jmmm.2007.06.010

• magnetoresistance
• hysteresis
• doping

The electrical transport and magnetization properties of (La0.75Bi0.25)(0.67)Ca0.33MnO3 were studied at the temperature and magnetic field ranges from 10 to 300 K and 0 to 5 T. Compared to pure La0.67Ca0.33MnO3, an unusual magnetoresistance and hysteresis phenomena was observed in (La0.75Bi0.25) 0.67Ca0.33MnO3. Especially, an enhanced magnetoresistance effect was obtained in (La0.75Bi0.25)(0.67)Ca0.33MnO3, meanwhile, in which significant temperature, and magnetic field hysteresis behaviors were also observed. The temperature and magnetic field hysteresis phenomena are mainly from the coexistence of CO and FM domains in the (La0.75Bi0.25)(0.67)Ca0.33MnO3, in which the CO domains have relaxation and pinning effects on the growth and rotation of FM domains.

• 出版日期2008-2
• 单位华中科技大学; 湖北文理学院