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American Institute of Physics, Journal of Applied Physics, 7(111), p. 07E334

DOI: 10.1063/1.3677666

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Structural properties and magnetic phase transition in HoNi2Mn (57Fe)

Journal article published in 2012 by J. L. Wang ORCID, S. J. Campbell, M. Hofmann, M. Hoelzel, R. Zeng, S. X. Dou, S. J. Kennedy
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The structural and magnetic properties of HoNi2Mn(57Fe) have been investigated. The 57Fe-doped HoNi2Mn compound crystallizes in the MgCu2-type structure with Fd-3m space group similar to HoNi2 and HoMn2. HoNi2Mn(57Fe) exhibits ferrimagnetic ordering below a Curie temperature of TC ∼ 60 K—significantly higher than the corresponding values for HoNi2 (TC = 15 K) and HoMn2 (TC = 24 K)—with analyses of dc magnetization and ac susceptibility results confirming that the magnetic transition at TC is second order. The Mössbauer spectra above TC are described well by two sub-spectra representing the 8a and 16d sites while below TC the spectra have been fitted using a site model comprising three sub-spectra. The Debye temperature, θD = 190(20) K, has been determined.