Exchange bias effect in multiferroic Eu0.75Y0.25MnO3 |
| |
| Authors: | Li-Qin Yan Fen Wang Yuelei Zhao Tao Zou Jun Shen Young Sun |
| |
| Institution: | 1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People''s Republic of China;2. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People''s Republic of China |
| |
| Abstract: | The exchange bias phenomenon has been investigated in multiferroic Eu0.75Y0.25MnO3. The material shows a weak ferromagnetism with cone spin configuration induced by external magnetic field below 30 K. Consequently, the electric polarization coming from the cycloid spin order below 30 K can be suppressed by external magnetic fields. The magnetic hysteresis loops after cooling in a magnetic field exhibit characteristics of exchange bias below the spin glassy freezing temperature (Tg)∼16 K. The exchange bias field, coercivity field, and remanent magnetization increase with increasing cooling magnetic field. The exchange bias effect is ascribed to the frozen uncompensated spins at the antiferromagnetism/weak ferromagnetism interfaces in the spin-glass like phase. |
| |
| Keywords: | Exchange bias Multiferroic Manganite |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
