Exchange bias behavior in Ni50.0Mn35.5 In14.5 ribbons annealed at different temperatures |
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| Authors: | T. Sá nchez,R. Sato Turtelli,R. Grö ssinger,M.L. Sá nchez,J.D. Santos,W.O. Rosa,V.M. Prida,Ll. Escoda,J.J. Suñ ol,V. Koledov,B. Hernando |
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| Affiliation: | 1. Dept. de Física, Universidad de Oviedo, Calvo Sotelo s/n, 33007 Oviedo, Spain;2. Institut fur Festkörperphysik, Technische Universität Wien, Wiedner Hauptstr. 8-10, 1040 Vienna, Austria;3. Campus de Montilivi, Universidad de Girona, edifici PII, Lluís Santaló s/n. 17003 Girona, Spain;4. Kotelnikov Institute of Radio Engineering and Electronics, RAS, Moscow 125009, Russia |
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| Abstract: | Heusler alloy Ni50.0Mn35.5In14.5 ribbons were prepared by melt-spinning technique. Several short time annealings were carried out in order to enhance the exchange bias effect in this alloy ribbon. The magnetic transition temperature increases with the annealing, compared to the as-spun sample, however no significant differences in respective Curie temperatures were observed for austenite and martensite phases in such annealed samples. Exchange bias effect is observed at low temperatures for all samples and practically vanishes at 60 K for the as-spun sample, whereas for the annealed ribbons it vanishes at 100 K. |
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| Keywords: | Heusler alloys Rapid solidification Phase transition Exchange bias |
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