I S Tereshina et al 2001 J. Phys.: Condens. Matter 13 8161 doi:10.1088/0953-8984/13/35/321
I S Tereshina1,2, P Gaczyński2, V S Rusakov1, H Drulis2, S A Nikitin1,3, W Suski2,3, N V Tristan3 and T Palewski3
Show affiliationsThe magnetic properties and 57Fe Mössbauer spectra of the compounds YFe11TiHx (x = 0, 1) were investigated. The magnetocrystalline anisotropy of YFe11Ti and its hydride was studied by analysing the hard and easy magnetization curves of single crystal samples in the temperature range 4.2–300 K. The spontaneous magnetization was determined in wide temperature range 4.2–650 K. It is established that at T = 4.2 K magnetic anisotropy constants K1 and K2 for YFe11TiH1 single crystal reach values of 25.8 K f.u.−1 and 0.24 K f.u.−1, respectively. The Mössbauer effect spectra of YFe11Ti and its hydride were analysed in terms of a model which takes into account the local environment of Fe atoms on three crystallographic sites (8f, 8j and 8i) and an influence of the random distribution of titanium on the 8i site. Upon hydrogenation both the hyperfine fields and the isomer shifts increase. These results are discussed in terms of the hydrogen-induced unit cell expansion and the electron charge transfer from the conduction band onto the H atoms.
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Issue 35 (3 September 2001)
Received 8 March 2001
Published 16 August 2001
A Corrigendum for this article has been published in 2003 J. Phys.: Condens. Matter 15
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