Magnetoelastic properties in polycrystalline Fe-Pd based ferromagnetic shape memory alloys
[摘要] Two series of Mn substituted Fe-Pd ferromagnetic shape memory ribbons were studied by X-ray diffraction, calorimetric and thermo-induced strain measurements. Linking the structural, magnetic and thermal expansion analysis on pristine ribbons and those subjected to different subsequent thermal treatments, highlights the role of substitution and of heat treatment of the martensitic transformation (MT). The melt-spinning technique removes the precipitation of undesirable b.c.t. irreversible phase and the addition of Mn, as a third alloying element, promotes the stabilization of the f.c.t. martensite. The linear thermal expansion measurements with and without static magnetic field provide information on the easy magnetization axis in the martensitic structure. Preliminary in vitro cytotoxicity tests generally indicate no toxicity or a tendency towards cell proliferation induced by the tested materials.
[发布日期] [发布机构] National Institute of Materials Physics, POB MG-7, Bucharest-Magurele; 77125, Romania^1;Victor Babes National Institute of Pathology, Bucharest, Romania^2;Cantacuzino National Medico, Military Institute for Research and Development, Bucharest, Romania^3
[效力级别] 材料科学 [学科分类]
[关键词] Ferromagnetic shape memory;Ferromagnetic shape memory alloy;Linear thermal expansion measurements;Magnetoelastic properties;Martensitic structures;Melt-spinning techniques;Static magnetic fields;Thermal expansion analysis [时效性]
