Magnetic properties and magnetic domain structures of NdFe{sub 10.5}Mo{sub 1.5} and NdFe{sub 10.5}Mo{sub 1.5}N{sub x}
- Department of Physics, Peking University, Beijing 100871, Peoples Republic of (China)
- State Key Laboratory of Magnetism, Institute of Physics, Chinese Academic Science, Beijing 100080, Peoples Republic of (China)
- Beijing University of Posts and Telecommunications, Beijing 100088, Peoples Republic of (China)
- Department of Physics, Central iron and Steel Research Institute, Beijing 100081, Peoples Republic of (China)
We succeed in preparing anisotropic magnetic powders with high performance based on the NdFe{sub 10.5}Mo{sub 1.5}N{sub x} nitrides. The properties of these materials are favorable for permanent magnet application. The domain structures of the NdFe{sub 10.5}Mo{sub 1.5} and NdFe{sub 10.5}Mo{sub 1.5}N{sub x} were studied by using magnetic force microscopy. Upon nitrogenation, a domain structure transition from complex maze to simple stripe was found. This transition is due to the strongly uniaxial magnetocrystalline anisotropy induced by interstitial nitrogen atoms. Together with magnetic measurements, we have calculated the domain wall energy {gamma}, exchange constant A, domain wall thickness {delta}, and critical single-domain particle size D{sub c} of NdFe{sub 10.5}Mo{sub 1.5} and NdFe{sub 10.5}Mo{sub 1.5}N{sub x}. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 552948
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 71; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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