Martensitic and magnetic domain structures in polycrystalline shape memory alloys Ni_{2+x}Mn_{1-x}Ga

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Grechishkin, R.M.^a | Koledov, V.V.^a | Shavrov, V.G.^{b; *} | Dikshtein, I.E.^b | Khovailo, V.V.^c | Takagi, T.^d | Buchelnikov, V.D.^e | Taskaev, S.V.^e

Affiliations: [a] Tver State University, Tver 170000, Russia | [b] Institute of Radioengineering and Electronics of RAS, Moscow 125009, Russia | [c] National Institute of Advanced Industrial Science and Technology, Tohoku Center, Sendai 983-8551, Japan | [d] Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan | [e] Chelyabinsk State University, Chelyabinsk 454021, Russia

Correspondence: [*] Corresponding author: V.G. Shavrov, Tel.: +7 095 2032426; Fax: +7 095 203 84 14; E-mail: [email protected]

Abstract: The martensitic twin and magnetic domain structures of polycrystalline samples of the shape memory Ni_{2+x}Mn_{1-x}Ga alloys are studied by magnetooptic and Bitter colloid techniques. It is shown, that the analysis of the magnetic domain structure allows one to determine the martensitic structure characteristics, such as symmetry of phases and tetragonal axes orientation. A theoretical model is in good agreement with the experiment.

DOI: 10.3233/JAE-557-XXX

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 175-178, 2004