Emergence of net magnetization by magnetic field biased diffusion in antiferromagnetic L10 NiMn
In: Physical Review B, Vol. 107 (2023), No. 17, Article 174417
2023article/chapter in journalOA Hybrid
Physics (incl. Astronomy)Faculty of Physics » Experimental PhysicsScientific institutes » Center for Nanointegration Duisburg-Essen (CENIDE)
Related: 1 publication(s)
Title in English:
Emergence of net magnetization by magnetic field biased diffusion in antiferromagnetic L10 NiMn
Author:
Josten, NicolasUDE
- LSF ID
- 61435
- ORCID
- 0009-0005-8543-8603
- Other
- connected with university
corresponding author
- LSF ID
- 61286
- ORCID
- 0000-0003-2225-8726
- Other
- connected with university
- LSF ID
- 59828
- ORCID
- 0000-0002-9899-2700
- Other
- connected with university
- LSF ID
- 2917
- ORCID
- 0000-0003-3601-1601
- Other
- connected with university
- GND
- 130011681
- LSF ID
- 3609
- ORCID
- 0000-0002-3209-4078
- Other
- connected with university
- GND
- 128899808
- LSF ID
- 10281
- ORCID
- 0000-0002-2306-1258
- Other
- connected with university
- GND
- 1029383219
- LSF ID
- 3560
- ORCID
- 0000-0002-1864-3261
- Other
- connected with university
Year of publication:
2023
Open Access?:
OA Hybrid
arXiv.org ID
Web of Science ID
Scopus ID
Language of text:
English
Abstract in English:
NiMn is a collinear antiferromagnet with high magnetocrystalline anisotropy (K=-9.7×105Jm-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 subsurface region. This leads to an additional ferromagnetic response appearing in the magnetization measurements, which can be removed by surface polishing.