多晶 $\mathrm{Tb_{0.15}Co_{0.85}}$ 中的磁关联
介观与纳米尺度物理
2020-06-11 v2
摘要
我们通过磁强计测量和小角中子散射（SANS）研究了亚铁磁化合物 的多晶样品。300 K 下的磁化曲线是软亚铁磁体的特征，但在 5 K 下磁滞表明存在磁畴。磁 SANS 信号表明，在 300 K 时 Tb 与 Co 磁矩在微米级晶粒内的大体积范围内关联，关联长度 > 100 nm。然而在 5 K 时，磁 SANS 分析揭示关联长度减小至约 4.5 nm，表明该亚铁磁体内形成了窄磁畴，其一维尺度处于 nm 范围。我们将观察到的畴结构变化归因于 Tb 子晶格磁性质的温度依赖性。
引用
@article{arxiv.2004.10475,
title = {Magnetic correlations in polycrystalline $\mathrm{Tb_{0.15}Co_{0.85}}$},
author = {Mathias Bersweiler and Philipp Bender and Inma Peral and Lucas Eichenberger and Michel Hehn and Vincent Polewczyk and Sebastian Mühlbauer and Andreas Michels},
journal= {arXiv preprint arXiv:2004.10475},
year = {2020}
}
备注
This is the version of the article accepted for publication including all changes made as a result of the peer review process, as submitted to Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi.org/10.1088/1361-6463/ab8b95