TY - JOUR
T1 - Simultaneous magnetooptic observation and thermomagnetic analysis of phase transitions in shape-memory Ni-Mn-Ga alloys
AU - Korpusov, Oleg M.
AU - Grechishkin, Rostislav M.
AU - Koledov, Victor V.
AU - Khovailo, Victor V.
AU - Takagi, T.
AU - Shavrov, Vladimir G.
N1 - Funding Information:
The work was supported by RFFI-BRFFI Grant No 02-02-81030 Bel_a. The authors are grateful to S. Ilyashenko and N. Steiner for their assistance in DS studies.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2004/5
Y1 - 2004/5
N2 - Direct observations of the austenite and martensite twin and magnetic domain structures are combined with thermomagnetic analysis (low-field AC susceptibility temperature measurements) of phase transitions in ferromagnetic shape memory alloys Ni2+xMn1-x Ga. Thermal hysteresis and magnetization jumps are clearly resolved by both techniques. Large Barkhausen-like jumps associated with discontinuous phase boundary and martensite twin motion are observed during the austenite-martensite transformation in contrast to the smooth ferromagnetic-paramagnetic transition near the Curie temperature.
AB - Direct observations of the austenite and martensite twin and magnetic domain structures are combined with thermomagnetic analysis (low-field AC susceptibility temperature measurements) of phase transitions in ferromagnetic shape memory alloys Ni2+xMn1-x Ga. Thermal hysteresis and magnetization jumps are clearly resolved by both techniques. Large Barkhausen-like jumps associated with discontinuous phase boundary and martensite twin motion are observed during the austenite-martensite transformation in contrast to the smooth ferromagnetic-paramagnetic transition near the Curie temperature.
KW - Barkhausen effect
KW - Magnetic domain structure
KW - Shape memory alloy
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U2 - 10.1016/j.jmmm.2003.12.812
DO - 10.1016/j.jmmm.2003.12.812
M3 - Article
AN - SCOPUS:23044441056
VL - 272-276
SP - 2035
EP - 2037
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - III
ER -