TY - JOUR
T1 - Phase stability of B2 and L21 ordered phases in Co2YGa (Y=Ti, V, Cr, Mn, Fe) alloys
AU - Kobayashi, K.
AU - Ishikawa, K.
AU - Umetsu, R. Y.
AU - Kainuma, R.
AU - Aoki, K.
AU - Ishida, K.
N1 - Funding Information:
The authors are very grateful to Professors K. Fukamichi and A. Fujita of Tohoku University for many helpful discussions during this work. This work was supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan and from Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST).
PY - 2007/3
Y1 - 2007/3
N2 - The B2/L21 order-disorder and magnetic transitions in Co2YGa (Y=Ti, V, Cr, Mn, Fe) alloys were investigated by electron probe microanalysis (EPMA), differential scanning calorimetry (DSC) and vibrating sample magnetometry (VSM). It was confirmed that the B2/L21 order-disorder transition temperature for the Co2YGa (Y=Ti, V, Cr) alloys monotonically decreases with increasing electron concentration of the Y site, whereas that of the Co2YGa (Y=Mn, Fe) alloys is almost constant at 1100±100 K. On the other hand, the Curie temperature TC of all the alloys rises almost monotonically with increasing electron concentration of the Y site.
AB - The B2/L21 order-disorder and magnetic transitions in Co2YGa (Y=Ti, V, Cr, Mn, Fe) alloys were investigated by electron probe microanalysis (EPMA), differential scanning calorimetry (DSC) and vibrating sample magnetometry (VSM). It was confirmed that the B2/L21 order-disorder transition temperature for the Co2YGa (Y=Ti, V, Cr) alloys monotonically decreases with increasing electron concentration of the Y site, whereas that of the Co2YGa (Y=Mn, Fe) alloys is almost constant at 1100±100 K. On the other hand, the Curie temperature TC of all the alloys rises almost monotonically with increasing electron concentration of the Y site.
KW - Curie temperature
KW - Half-metallic ferromagnet (HMFs)
KW - Heusler phase
KW - Order-disorder phenomenon
KW - Phase diagram of metals and alloys
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U2 - 10.1016/j.jmmm.2006.10.704
DO - 10.1016/j.jmmm.2006.10.704
M3 - Article
AN - SCOPUS:33847245956
SN - 0304-8853
VL - 310
SP - 1794
EP - 1795
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2 SUPPL. PART 2
ER -