Magnetic domain structures of 1:12 type nitrides NdFe10.5Mo1.5N x

Autor: Baoshan Han, Yingchang Yang, Jinbo Yang, Hai Xu
Rok vydání: 1999
Předmět:
Zdroj: Science in China Series A: Mathematics. 42:93-98
ISSN: 1862-2763
1006-9283
DOI: 10.1007/bf02872055
Popis: The magnetic domain structures of the 1:12 type alloy NdFe10.5Mo1.5 and its nitride were firstly investigated by using magnetic force microscope (MFM). A complicated corrugation and spike magnetic domain structure was observed in NdFe10.5Mo1.5alloy. Upon nitrogenation, a stripe domain structure occurs due to the dramatic increase of the uniaxial magneto-crystalline anisotropy K1 induced by nitrogenation. Based on the basic domain theories, the origin of these domain patterns was analyzed and the reason of domain structure transition is explained quantitatively. The domain wall energy γ, exchange constant A and single-domain particle size Dc of NdFe10.5 Mo1.5 and NdFe10.5-Mo1.5N x were calculated in combination with the measured domain width ω and magnetic parameters. A comparison of magnetic parameters with those of SmCo5 and Nd2Fe14B permanent materials was also made.
Databáze: OpenAIRE
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