Correlation between compensation temperatures of magnetization and angular momentum in GdFeCo ferrimagnets
Correlation between compensation temperatures of magnetization and angular momentum in GdFeCo ferrimagnets
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DOI：
10.1103/physrevb.97.220403
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发表时间：
2018-06-12
影响因子：
3.7
通讯作者：
Ono, Teruo
中科院分区：
文献类型：
--
作者：
Hirata, Yuushou;Kim, Duck-Ho;Ono, Teruo
确定亚铁磁体的角动量补偿温度是迈向亚铁磁性自旋电子学的重要一步，但要在实验上实现这一点通常并不容易。我们建议在没有动态表征技术的情况下估算亚铁磁体的角动量补偿温度。基于临界指数近似，我们推导出了磁化补偿温度、居里温度和角动量补偿温度之间的简单关系式。结果表明，导出的方程可以解释我们的实验结果，并且可以用来从磁化强度与温度的关系来估算角动量补偿温度。
Determining the angular momentum compensation temperature of ferrimagnets is an important step towards ferrimagnetic spintronics, but it is not generally easy to achieve it experimentally. We propose away to estimate the angular momentum compensation temperature of ferrimagnets without a dynamical characterization technique. We derive a simple equation that relates the magnetization compensation temperature, the Curie temperature, and the angular momentum compensation temperature based on the critical exponent approximation. We show that the derived equation can explain our experimental results and can be used to estimate the angular momentum compensation temperature from the temperature dependence of magnetization.