磁化和热力学研究揭示了Eu3InAs3中的潜在磁性结构
Ming Liu1,2, Shuai Zhang2,3, Ke Jia2
1School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China.
概括
本研究探讨了Eu3InAs3中的反铁磁过渡,揭示了明显的轴扩张/收缩以及与旋转转折过渡相关的1/3磁化平原. 结合磁化和热力学分析,澄清了自旋格合材料中的复杂磁性结构.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 磁力学 磁力学 是一种
背景情况:
- 磁性半导体中的反铁磁 (AFM) 转换对于理解复杂的磁性行为至关重要.
- Eu3InAs3 具有引人注目的磁性,需要进行详细的研究.
- 旋转格子合显著影响磁性结构和热力学反应.
研究的目的:
- 系统地研究在Eu3InAs3.3中AFM过渡期间的磁化和热力学反应.
- 为了阐明在应用场下与旋转转和旋转转过渡相关的磁性结构变化.
- 为了建立磁性结构和自旋格子合之间的相关性.
主要方法:
- 测量线性热膨胀以观察磁过渡期间的维度变化.
- 一个简化的平均场模型,结合了AFM交换相互作用,异构性和Zeeman合.
- 分析磁化数据和附带磁热效应,以确定磁.
主要成果:
- "a"轴扩展,而"b"和"c"轴在两个AFM过渡 (TN1和TN2) 处收缩.
- 沿"b"轴的1/3磁化平原归因于多个轻轴磁体结构中的部分旋转翻转过渡.
- 在TN1处有序的Eu2+时刻的数量大约是TN2处的两倍,通过磁分析得到证实.
结论:
- Eu3InAs3的磁性结构涉及在TN1和TN2在不同轴上的Eu子网的明显排序.
- 结合磁化和热力学研究提供了一种简单的方法来理解具有强烈自旋格子合的材料中的磁性结构.
- 这些发现提供了关于先进磁性材料中磁性和格子动态之间的相互作用的见解.
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