Improved ferromagnetism of BiFeO3 nanoparticles based on different crystal structures
Improved ferromagnetism of BiFeO3 nanoparticles based on different crystal structures
复制标题
基于不同晶体结构的BiFeO3纳米颗粒改善铁磁性
DOI：
10.1166/mex.2017.1364
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发表时间：
2017
影响因子：
0.7
通讯作者：
Changjun Jiang
中科院分区：
文献类型：
--
作者：
Lei Wu;Chunhui Dong;Jinsheng Li;Xiaoqiang Wang;Changjun Jiang
合成了不同原子排列的BiFeO_3纳米粒子。结晶度直接影响BiFeO_3纳米粒子的铁磁性。部分晶化的BiFeO_3纳米粒子的饱和磁化强度接近2.914 emu/g。此外，部分晶化的BiFeO_3的自旋玻璃型冻结温度和交换偏置场随温度的变化而移动6K，表明铁磁性和反铁磁性的共同控制是通过改变原子的排列有序度来实现的。
BiFeO3 nanoparticles with different atomic arrangements were synthesized. The ferromagnetism of BiFeO3 nanoparticles was affected directly by the degree of crystallization. A stronger saturation magnetization similar to 2.914 emu/g was obtained in partially-crystallized BiFeO3 nanoparticles. In addition, the partially-crystallized BiFeO3 showed a 6 K shift of the spin-glass-like freezing temperature and exchange bias field kept almost zero with the change of temperature, which demonstrated a common control of the ferromagnetism and antiferromagnetism were achieved by changing the atomic arrangement order degree.