Magnetism of new semi-Heusler compounds FeVSn and CoVSn

Author

Lue, C.S. ; Öner, Y. ; Naugle, D.G. ; Ross, Joseph H., Jr.

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2138

Lastpage

2140

Abstract

Magnetic properties of new intermetallics FeVSn and CoVSn are reported. Both materials belong to the group of semi-Heusler compounds, with lattice parameters of 0.593 and 0.598 nm respectively in a cubic MgAgAs structure. X-ray investigations indicate partial atomic ordering in both cases. Ferromagnetic order was observed in FeVSn with T_c=86 K. The saturation moment obtained by M versus H measurements at 4 K has a value of 0.45 Gig, indicating that FeVSn is a weak itinerant ferromagnet. CoVSn was found to be paramagnetic with no magnetic ordering down to 2 K. Room-temperature ⁵¹V NMR spectra were used as a local probe of the magnetic behavior of these materials. The results Indicate that V d orbitals play a strong role in the magnetism of FeVSn. Results for CoVSn are consistent with predicted semiconducting or semimetallic behavior for this material

Keywords

cobalt alloys; ferromagnetic materials; iron alloys; lattice constants; magnetic moments; nuclear magnetic resonance; paramagnetic materials; tin alloys; vanadium alloys; weak ferromagnetism; 2 K; 293 to 298 K; 4 K; ⁵¹V NMR spectra; CoVSn; FeVSn; X-ray diffraction; cubic MgAgAs structure; ferromagnetic order; lattice parameters; paramagnet; partial atomic ordering; saturation moment; semi-Heusler compounds; semiconducting behavior; semimetallic behavior; weak itinerant ferromagnet; Atomic measurements; Extraterrestrial measurements; Intermetallic; Lattices; Magnetic materials; Magnetic properties; Magnetic semiconductors; Paramagnetic materials; Saturation magnetization; Semiconductor materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951101

Filename

951101