تقرير
Emergence of net magnetization by magnetic-field-biased diffusion in antiferromagnetic L1$_0$ NiMn
العنوان: | Emergence of net magnetization by magnetic-field-biased diffusion in antiferromagnetic L1$_0$ NiMn |
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المؤلفون: | Josten, Nicolas, Miroshkina, Olga, Noorzayee, Sakia, Zingsem, Benjamin, Çakır, Aslı, Acet, Mehmet, Wiedwald, Ulf, Gruner, Markus, Farle, Michael |
المصدر: | Phys. Rev. B 107, 174417 (2023) |
سنة النشر: | 2023 |
المجموعة: | Condensed Matter |
مصطلحات موضوعية: | Condensed Matter - Materials Science |
الوصف: | NiMn is a collinear antiferromagnet with high magneto crystalline anisotropy ($K_2=-9.7\times10^5\;\text{J m}^{-3}$). Through magnetic annealing of NiMn with excess Ni, strongly pinned magnetic moments emerge due to an imbalance in the distribution of Ni in the antiferromagnetic Mn-sublattices. The results are explained with a model of magnetic-field-biased diffusion, supported by ab initio calculations. Another observation is the oxidation of Mn at the surface, causing an enrichment of Ni in the sub-surface region. This leads to an additional ferromagnetic response appearing in the magnetization measurements, which can be removed by surface polishing. |
نوع الوثيقة: | Working Paper |
DOI: | 10.1103/PhysRevB.107.174417 |
URL الوصول: | http://arxiv.org/abs/2302.13387 |
رقم الأكسشن: | edsarx.2302.13387 |
قاعدة البيانات: | arXiv |
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