Effect of the Fe substitution on the magnetic transition of NdCo9.5V2.5

Liu, W. F.; Rao, G. H.; Ouyang, Z. W.; Yang, H. F.; Liu, G. Y.; Feng, X. M.; Ma, H. W.; Wang, S. Y.; Liang, J. K.

doi:doi:10.1063/1.1640785

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Journal of Applied Physics / Volume 95 / Issue 3 / COMMUNICATIONS

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J. Appl. Phys. 95, 1612 (2004); http://dx.doi.org/10.1063/1.1640785 (3 pages)

Effect of the Fe substitution on the magnetic transition of NdCo_9.5V_2.5

W. F. Liu, G. H. Rao, Z. W. Ouyang, H. F. Yang, G. Y. Liu, X. M. Feng, H. W. Ma, S. Y. Wang, and J. K. Liang

Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China

(Received 15 July 2003; accepted 19 November 2003)

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Crystal structure and magnetic properties of the NdCo_9.5−xFe_xV_2.5 compounds with x=0–3.5 have been investigated. The lattice parameters increase linearly with the Fe content and the Curie temperature increases substantially at small amount of Fe content and then gradually with the further increase of x. A domain-wall pinning phenomenon was observed in all of the compounds and becomes less obvious as x increases. At a higher field, the compounds exhibit a field-induced metamagnetic transition. The critical field for the metamagnetic transition increases first then decreases with the Fe content, whereas the difference of the magnetization between 14 and 5 T increases with x. The observation can be understood by considering an interplay of the volume expansion, enhanced exchange coupling parameter J_RT and the T sublattice moment μ_T due to the Fe substitution for Co. © 2004 American Institute of Physics.

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KEYWORDS and PACS

Keywords

crystal structure, magnetisation, magnetic domain walls, Curie temperature, metamagnetism, magnetic transitions

PACS

75.30.Kz

Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)
75.60.Ch

Domain walls and domain structure
75.60.Ej

Magnetization curves, hysteresis, Barkhausen and related effects
61.66.Fn

Inorganic compounds