TY - JOUR
T1 - Annealing temperature dependence of crystal structures and magnetic properties of Fe 2CrAl and Fe 2CrGa Heusler alloys
AU - Umetsu, R. Y.
AU - Morimoto, N.
AU - Nagasako, M.
AU - Kainuma, R.
AU - Kanomata, T.
N1 - Funding Information:
The authors would like to thank Professor A. Fujita of the Graduate School of Engineering, Tohoku University for the magnetic measurements. This study was supported by Grant-in-Aids for Scientific Research from the Japanese Society for the Promotion of Science (JSPS), and by the Global Center of Excellence (GCOE) Project . Parts of this work were performed at the Center for Low Temperature Science, Institute for Materials Research, Tohoku University.
PY - 2012/7/5
Y1 - 2012/7/5
N2 - The crystal structures, spontaneous magnetic moment, I s, and the Curie temperature, T C, of Fe 2CrAl and Fe 2CrGa Heusler alloys were investigated. Single phases of A2, B2 and L2 1-type structures were obtainable in Fe 2CrAl alloy by controlling the annealing temperature. The values of the I s and T C of the A2-type phase were 2.2 μ B/f.u. and 316 K and those of the B2-type phase were 2.0 μ B/f.u. and 274 K, larger than those of the L2 1-type phase of 1.6 μ B/f.u. and 210 K, respectively. A single phase of the A2-type phase in Fe 2CrGa alloy was obtained and the I s and T C were about 2.8 μ B/f.u. and 353 K, respectively. The B2 or L2 1-type single phases of Fe 2CrGa alloy could not be obtained because of the inevitable precipitants.
AB - The crystal structures, spontaneous magnetic moment, I s, and the Curie temperature, T C, of Fe 2CrAl and Fe 2CrGa Heusler alloys were investigated. Single phases of A2, B2 and L2 1-type structures were obtainable in Fe 2CrAl alloy by controlling the annealing temperature. The values of the I s and T C of the A2-type phase were 2.2 μ B/f.u. and 316 K and those of the B2-type phase were 2.0 μ B/f.u. and 274 K, larger than those of the L2 1-type phase of 1.6 μ B/f.u. and 210 K, respectively. A single phase of the A2-type phase in Fe 2CrGa alloy was obtained and the I s and T C were about 2.8 μ B/f.u. and 353 K, respectively. The B2 or L2 1-type single phases of Fe 2CrGa alloy could not be obtained because of the inevitable precipitants.
KW - B2 and A2-type phases
KW - Curie temperature
KW - Heusler alloys
KW - L2
KW - Magnetic moment
KW - Order-disorder transition temperature
KW - Phase stability
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U2 - 10.1016/j.jallcom.2012.02.163
DO - 10.1016/j.jallcom.2012.02.163
M3 - Article
AN - SCOPUS:84859919542
SN - 0925-8388
VL - 528
SP - 34
EP - 39
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -