Intermartensitic phase transformations in Ni-Mn-Ga studied under magnetic field

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:290

Article; Proceedings Paper

Chernenko, VA ; Cesari, E ; Khovailo, V ; Pons, J ; Seguí, C ; Takagi, T

关键词: Hensler alloys;    phase transitions-martensitic-like;    electrical resistivity;    phase transitions-field dependent;   

DOI  :  10.1016/j.jmmm.2004.11.399

来源: Elsevier

【 摘 要 】

The Heusler-type ferromagnetic shape memory Ni52.6Mn23.6Ga23.8 single crystal has been found to undergo a sequence of temperature-induced reversible intermartensitic transformations (IMTs) in addition to the martensitic transformation (NIT). The temperature dependencies of the magnetization and electrical resistivity, as well as the magnetization curves have been studied for this alloy. In contrast to the MT, no anomalies of the saturation magnetization have been observed for any of the two IMTs. Nevertheless, application of a strong constant magnetic field is shown both experimentally and theoretically to induce similar shifts of the IMTs and NIT temperatures. (c) 2004 Elsevier B.V. All rights reserved.

【 授权许可】

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