Temperature-dependent anisotropic magnetoresistance inversion behaviors in Fe3O4 films
- Title
- Temperature-dependent anisotropic magnetoresistance inversion behaviors in Fe3O4 films
- Author
- 홍진표
- Keywords
- Fe3O4 thin films; Inversion behavior; Domain wall scattering
- Issue Date
- 2017-02
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v. 423, page. 7-11
- Abstract
- We address the abnormal anisotropic magnetoresistance (AMR) reversal feature of half-metallic polycrystalline Fe3O4 films occurring at a specific temperature. Experimental results revealed a positive to negative MR transition in the Fe3O4 films at 264 K, which reflect the influence of additional domain wall scattering. These features was described by a correlation between domain wall resistance and inversion behavior of AMR with additional domain wall scattering factors. We further describe a possible model based on systematic structural and electrical measurements that employs a temperature-dependent domain wall width and spin diffusion length of the conducting electrons. This model allows for spin-flipping scattering of spin polarized electrons inside a proper domain width.
- URI
- https://www.sciencedirect.com/science/article/abs/pii/S0304885316318765?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/112782
- ISSN
- 0304-8853; 1873-4766
- DOI
- 10.1016/j.jmmm.2016.09.067
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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