Published March 2005 | Version v1
Journal article Metadata-only

Magnetic and thermal properties of Ni-Mn-Ga shape memory alloy with Martensitic transition near room temperature

Creators

  • 1. Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218 (United States)
  • 2. Physics Department, Brown University, Providence, RI 02912 (United States)
  • 3. Institute of Physics, Chinese Academy of Science, Beijing (China)

Description

We have studied the magnetic properties of an off-stoichiometric Heusler shape memory alloy Ni51.9Mn23.2Ga24.9 with near room temperature martensitic transition at 306 K. The temperature dependence of magnetization revealed a thermal hysteresis and a ∼10% decrease in spontaneous magnetization across the martensitic transition. In-situ X-ray diffraction measurements at different temperatures revealed a negative shape strain of 4.8%. Heat absorptions measurements indicated that the martensitic structural transition may take place in multiple steps

Additional details

Identifiers

DOI
10.1016/j.jmmm.2004.08.025;
PII
S0304-8853(04)00880-7;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
288
Journal Issue
1-2
Journal Page Range
p. 79-83
ISSN
0304-8853
CODEN
JMMMDC

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36074817
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ENERGY ABSORPTION; GALLIUM ALLOYS; HEAT; HEUSLER ALLOYS; HYSTERESIS; MAGNETIC PROPERTIES; MAGNETIZATION; NICKEL ALLOYS; SHAPE MEMORY EFFECT; STOICHIOMETRY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; THERMODYNAMIC PROPERTIES; X-RAY DIFFRACTION
Descriptors DEC
ABSORPTION; ALLOYS; ALUMINIUM ALLOYS; COHERENT SCATTERING; COPPER ALLOYS; COPPER BASE ALLOYS; CORROSION RESISTANT ALLOYS; DIFFRACTION; ENERGY; MANGANESE ALLOYS; PHYSICAL PROPERTIES; SCATTERING; SORPTION; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.