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分别测量了Sm1-xGdxAl2在低温下不同外加磁场时的电阻和磁化率.实验 结果表明，铁磁性物质Sm1-xGdxAl2在居里温度以下时，自旋磁矩和轨 道磁矩反平行有序排列，且对温度的依赖关系不同，导致在磁性抵消点出现自旋铁磁有序而 总磁矩为零的磁现象.并发现外加强磁场时自旋轨道发生翻转.
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关键词:
- Sm1-xGdxAl2 /
- 铁磁有序 /
- 自旋磁矩 /
- 轨道磁矩
The resistance and magnetic susceptibility of Sm1-xGdxAl2 with x=00098, 0019 and 003 have been studied at low temperatures. Spin moments and orbital moments couple antiparallelly in this material. The compensat ion temperature at which the spin moments are equal to orbital ones is observed, and it decreases with increasing x. The spin_orbit flip has been found in a strong field.-
Keywords:
- Sm1-xGdxAl2 /
- ferromagnetism /
- spin moment /
- orbital moment
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中国物理学会期刊
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