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arXiv 0906.5340cond-mat.mtrl-sci
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石榴石-金属界面的磁化敏感势

A Magnetization Sensitive Potential at Garnet-Metal Interfaces

L. R. Hunter, K. A. Virgien, A. W. Bridges, B. J. Heidenreich, J. E. Gordon, A. O. Sushkov

摘要:

我们研究了石榴石和各种金属之间的界面处出现的磁化相关的电压。电压在施加的磁场中是均匀的,并且取决于表面粗糙度和将表面保持在一起的压力。在不同的金属表面之间观察到的大小,符号和磁依赖性的大的变化。一些模式已被确定在测量的电压和一个简单的模型描述,可以容纳的总功能。我们的多晶YIG样品之一的体磁电响应进行测量,并被发现是一致的,在电场和磁场中的自由能是二次项。然而,这样一个术语的存在并不能完全解释测量电压的复杂磁化依赖性。

英文摘要:

We investigate a magnetization-dependent voltage that appears at the interface between garnets and various metals. The voltage is even in the applied magnetic field and is dependent on the surface roughness and the pressure holding the surfaces together. Large variations in the size, sign and magnetic dependence are observed between different metal surfaces. Some patterns have been identified in the measured voltages and a simple model is described that can accommodate the gross features. The bulk magnetoelectric response of one of our polycrystalline YIG samples is measured and is found to be consistent with a term in the free energy that is quadratic in both the electric and magnetic fields. However, the presence of such a term does not fully explain the complex magnetization dependence of the measured voltages.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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