Intermartensitic transformation in a NiMnGa alloy

Autor:	James Cullen, Liyang Dai, Manfred Wuttig
Rok vydání:	2004
Předmět:	Materials science Condensed matter physics Alloy Metallurgy General Physics and Astronomy engineering.material Atmospheric temperature range Magnetic field Vibration Tetragonal crystal system Phase (matter) Martensite engineering Ultrasonic sensor
Zdroj:	Journal of Applied Physics. 95:6957-6959
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1687203
Popis:	The temperature dependencies of the elastic constants of martensitic Ni0.50Mn0.284Ga0.216 were studied in the temperature range from 428 K down to 200 K. Measurements were conducted using the ultrasonic continuous-wave method in a 0.8 T magnetic field. At 220 K abrupt changes were found in the temperature dependences of the velocities of all 11 elastic wave modes, which indicates a structural phase change from the tetragonal (5M) martensite to a second, probably tetragonal, phase (nonlayered) at lower temperature.
Databáze:	OpenAIRE
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