Magnetic properties of hp13 type TFe6Ge6(T = Zr, Nb, Hf) alloys

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:226

Article; Proceedings Paper

Hori, T ; Nishihara, R ; Akimitsu, M ; Ohoyama, K ; Onodera, H ; Yamaguchi, Y ; Mitsudo, S ; Motokawa, M

关键词: antiferromagnetism;    neutron diffraction;    Mossbauer spectra;   

DOI  :  10.1016/S0304-8853(00)01312-3

来源: Elsevier

【 摘 要 】

We have made magnetization measurements, Mossbauer spectroscopy and neutron diffraction experiments on hexagonal hp13 type TFe6Ge6(T = Zr, Hf, Nb) alloys; the 1a and 6i sites are entirely occupied by T( = Zr, Hf, Nb) and Fe, respectively. The alloys exhibit a simple antiferromagnetism with the magnetic moment of about 1 mu (B)/Fe atom at 295 K. The Neel temperature T-N, the paramagnetic Curie temperature theta (p) and the internal field H-in are as follows: T-N = 495 K, theta (p) = 70 K and H-in = 227 K for T = Zr; T-N = 462 K, theta (p) = 62 K and H-in = 198 K for T = Hf; T-N = 554 K, theta (P) = 71 K and H-in = 198 K for T = Nb. This is in contrast with complicated magnetic properties of the isotypic alloys such as Fe5Mn2Ge6. (C) 2001 Elsevier Science B.V. All rights reserved.

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