Magnetic phase diagram of Ni2Mn1.44−xCuxSn0.56 shape memory alloys

Autor:	Katsunari Oikawa, T. Miura, Tetsuo Shoji, Rie Y. Umetsu, K. Fukushima, Hironori Nishihara, Ryosuke Kainuma, K. Ohtsuki, K.R.A. Ziebeck, Wataru Ito, Takeshi Kanomata, K. Endo, Yoshiya Adachi
Rok vydání:	2014
Předmět:	Austenite Materials science Condensed matter physics Mechanical Engineering Metals and Alloys Paramagnetism Magnetization Magnetic shape-memory alloy Mechanics of Materials Phase (matter) Martensite Materials Chemistry Curie temperature Phase diagram
Zdroj:	Journal of Alloys and Compounds. 590:221-226
ISSN:	0925-8388
Popis:	Magnetization measurements have been carried out on the magnetic shape memory alloys (MSMAs) Ni2Mn1.44−xCuxSn0.56 (0 ⩽ x ⩽ 0.09). On the basis of the experimental results, the phase diagram of Ni2Mn1.44−xCuxSn0.56 (0 ⩽ x ⩽ 0.09) alloys in the temperature-concentration plane has been determined. The resultant phase diagram is spanned by paramagnetic austenite (Para-A), ferromagnetic austenite (Ferro-A) and ferromagnetic martensite (Ferro-M) phases. The martensitic transition temperature TM makes a broad maximum as a function of x, whereas, in the austenite phase the Curie temperature TC decreases slightly with x. The TC of Ni2Mn1.415Cu0.025Sn0.56 was found to decrease linearly with pressure, whereas TM increased linearly with pressure. The values of dTM/dp and dTC/dp of Ni2Mn1.415Cu0.025Sn0.56 were found to be 0.88 K/kbar and −0.31 K/kbar, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b720f5585340fcdc6a4a2061037230e3 https://doi.org/10.1016/j.jallcom.2013.12.045 Zobrazit plný text záznamu Full Text from ScienceDirect