Magnetic properties of Heusler alloys Ru2−xFexCrSi

• Published in: Journal of physics. Condensed matter 2005-09, Vol.17 (37), p.5889-5894
• Main Authors: Matsuda, Kazuhisa, Hiroi, Masahiko, Kawakami, Masayuki
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic properties and materials; Other ferromagnetic metals and alloys; Physics; Studies of specific magnetic materials
• ISSN: 0953-8984; 1361-648X
• DOI: 10.1088/0953-8984/17/37/024

We report on the structural and magnetic properties of newly synthesized Heusler alloys, Ru2-xFexCrSi, which have quite recently been shown to be candidates for ferromagnetic metals with high spin polarization from band structure calculations. Polycrystalline samples of Heusler alloys Ru2-xFexCrSi were prepared for 0.5 < x < 1.8. They were found to have L21 structures for 0.5 < , x < 1.5 and B2 for x = 1.8. Magnetic measurements showed that they are ferromagnets. The Curie temperature for x = 1.0 was found to be 370 K. The Curie temperature tends to increase with increasing Fe concentration x. The saturation magnetic moment increases almost linearly as x increases. For higher Fe concentration the saturation magnetic moment is close to 2 mB per formula unit, which is theoretically expected.