57Fe Mössbauer spectroscopic investigation of the structural details of some ternary borides

Yuryev, S.O.; Yushchuk, S. І.; Kuz’ma, Yu. B.; Lopatynsky, I.E.

doi:10.1016/s0925-8388(98)00250-3

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…In this way, new borides of Pr 5-x Co 2+x B 6 -type structure containing iron and cobalt have been obtained in 1986 by Dub et al for R = Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu [1]. The crystal structures of these borides R 5 T 2 B 6 (T = transition metal) have been determined previously by X-ray diffraction and the existence of a homogeneity range has been stated for some of them [1,2]. They crystallize in the trigonal space group R-3m with the unit cell parameters a ≈ 5.4 Å and c ≈ 23 Å.…”

Section: Introductionmentioning

confidence: 93%

A structural and magnetic study of Nd5Fe2B6 and Nd5Fe2B6D4.1

Tencé

Wattiaux

Duttine

et al. 2017

Journal of Alloys and Compounds

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We investigated the structural and magnetic properties of the boride Nd 5 Fe 2 B 6 and of the deuteride Nd 5 Fe 2 B 6 D 4.1 by means of magnetization and specific heat measurements, Mössbauer spectroscopy and neutron powder diffraction. In Nd 5 Fe 2 B 6 D 4.1, deuterium atoms are located in two inequivalent interstitial sites: one octahedral D1 [Nd6] and one tetrahedral D2 [Nd3Fe], both avoiding B as near neighbor. This insertion induces a pronounced anisotropic unit cell expansion along the c-axis. While the Nd 5 Fe 2 B 6 compound exhibits a magnetic ordering below about 68 K, the deuteride exhibits a lower ordering temperature of about 21 K as a consequence of D insertion in the Nd environment. For both compounds powder neutron diffraction investigations have evidenced a ferromagnetic structure with magnetic moments along the c-axis. However, in the deuteride, the Nd magnetic moments values are reduced and that of Fe vanishes. 57 Fe Mössbauer spectroscopy confirms the existence of a small ordered magnetic moment on iron in Nd 5 Fe 2 B 6 and the presence of two environments for Fe in the deuteride.

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Section: Introductionmentioning

confidence: 93%