New insight in the nature of surface magnetic anisotropy in iron borate
| Autor: | M.B. Strugatsky, K. Seleznyova, V. E. Zubov, Janis Kliava |
|---|---|
| Přispěvatelé: | Physics and Technology Institute [Simferopol], Crimean Federal University, Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Lomonosov Moscow State University (MSU) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Field (physics)
Magnetism Surface magnetic anisotropy Inorganic chemistry chemistry.chemical_element 02 engineering and technology 01 natural sciences Ion Crystal Superposition principle 0103 physical sciences Materials Chemistry Perturbation theory 010306 general physics Boron Crystal field Condensed matter physics Superposition model Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Magnetic anisotropy [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism chemistry Iron borate FeBO 3 [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology |
| Zdroj: | Surface Science Surface Science, Elsevier, 2018, 668, pp.80-84. ⟨10.1016/j.susc.2017.10.015⟩ |
| ISSN: | 0039-6028 |
| Popis: | International audience; The theory of surface magnetism of iron borate, FeBO3, has been extended by taking into consideration a crystal field contribution to the surface magnetic anisotropy energy. For this purpose, a model of distortion of the six-fold oxygen environment of iron ions in the near-surface layer of iron borate has been put forward. The spin Hamiltonian parameters for isolated Fe3+ ions in the distorted environment of the near-surface layer have been calculated using the Newman's superposition model. The crystal field contribution to the surface magnetic anisotropy energy has been calculated in the framework of the perturbation theory. The model developed allows concluding that the distortions of the iron environment produce a significant crystal field contribution to the surface magnetic anisotropy constant. The results of experimental studies of the surface magnetic anisotropy in iron borate can be described assuming the existence of relative contractions in the near-surface layer of the order of 1 %. |
| Databáze: | OpenAIRE |
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