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

[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.

[发布日期] 2001-05-01

[效力级别]  Proceedings Paper

[关键词] antiferromagnetism;neutron diffraction;Mossbauer spectra