|
|||||
|
|
Heisenberg-like ferromagnetism and percolative conductivity in the half-doped manganite Nd0.5Ca0.25Sr0.25MnO3 |
|
| Authors: | Jiyu Fan Bo Hong Yangguang Shi Langsheng Ling Yuheng Zhang |
| Institution: | a Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China b Department of Material Engineering, China Jiliang University, Hangzhou 310018, China c High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China d Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China |
| Abstract: | The magnetic behavior and electronic transport in the half-doped manganite Nd0.5Ca0.25Sr0.25MnO3 have been investigated. The critical exponents are studied by using isothermal magnetization methods. The results show that the paramagnetic-ferromagnetic transition is second order and the magnetic interaction is satisfied with the prediction of three-dimensional Heisenberg model. The electronic transport belongs to the percolation mechanism. These findings demonstrate that the critical behavior of the magnetic transition and conductivity for manganites are related to Mn-site ordering degree. |
| Keywords: | Critical phenomena Eletrical transport Manganites |
| 本文献已被 ScienceDirect 等数据库收录！ | |