Relation between structure and magnetism of TixFe100−x alloys within the C14 Laves-phase stability range

Autor: Th. Roessel, Bernd Rellinghaus, Eberhard F. Wassermann, W. Pepperhoff
Rok vydání: 1998
Předmět:
Zdroj: Journal of Magnetism and Magnetic Materials. 190:289-301
ISSN: 0304-8853
DOI: 10.1016/s0304-8853(98)00298-4
Popis: We report about X-ray and magnetic investigations on polycrystalline alloys with hexagonal C14 (MgZn 2 ) structure of the system Ti x Fe 100− x in the concentration range 30.5⩽ x ⩽36.5 around the Laves-phase composition TiFe 2 (Ti 33.3 Fe 66.6 ). Neighboring compositions Fe 50 Ti 50 (with B2 structure) and Ti 15 Fe 85 and Ti 20 Fe 80 (with BCC structure) have also been investigated. From the data we establish a magnetic phase diagram for the C14 range of the system, showing a rather sharp transition from mainly ferromagnetic ordering in the range x x >32. The results can be made plausible microscopically by taking the site dependence of the moments into account. A revised structural equilibrium phase diagram is also given.
Databáze: OpenAIRE