Phase Separation and Stability of L21-Type Phase in Co2(Cr1-xFex) (Ga1-yAly) Alloys
Phase Separation and Stability of L21-Type Phase in Co2(Cr1-xFex) (Ga1-yAly) Alloys
复制标题
Co2(Cr1-xFex)(Ga1-yAly)合金中L21型相的相分离和稳定性
DOI：
10.2320/matertrans.47.20
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发表时间：
2006
影响因子：
1.2
通讯作者：
K. Ishida
中科院分区：
文献类型：
--
作者：
K. Kobayashi;R. Kainuma;K. Ishida
The B2/L2 1 order-disorder transition and ferromagnetic/paramagnetic transition temperatures in Co 2 (Cr 1-x Fe x )(Ga 1-y Al y ) alloys were determined by differential scanning calorimetry and transmission electron microscopy. It was found that spinodal decomposition cannot be suppressed by quenching in the Al-rich portion of Co 2 Cr(Ga 1-y Al y ) alloys, leading to lowering of Curie temperature T c . The transition temperature T B2/L2 1 t from the B2 to L2 1 -type phase decrease with increasing y for both the Co 2 CrrGa 1-y Al y ) and Co 2 Fe(Ga 1-y Al y ) alloy systems. The T c in the Ga-rich portion of the L2 1 -type Co 2 Cr(Ga 1-y Al y ) alloy system is almost constant at about 480K, whereas that in the B2-type Co 2 Fe(Ga 1-y Al y ) alloy system slightly increases from about 1100K to about 1170K. By extrapolation from the Ga-rich side of Co 2 Cr(Ga 1-y Al y ) alloys, T B2/L2 1 t and Tc of the metastable Co 2 CrAl alloy were determined as 800 and 470K, respectively. An optimal concentration area for obtaining excellent half-metallic properties and high stability of the L2 1 -type phase in the Co 2 (Cr 1-x Fe x )(Ga 1-y Al y ) alloys is proposed.
影响因子：
6.2
作者：
K. Kobayashi;R. Kainuma;K. Fukamichi;K. Ishida
通讯作者：
K. Kobayashi;R. Kainuma;K. Fukamichi;K. Ishida
影响因子：
3.7
作者：
R. Umetsu;K. Kobayashi;A. Fujita;K. Oikawa;R. Kainuma;K. Ishida;Norifumi Endo;K. Fukamichi;A. Sakuma
通讯作者：
R. Umetsu;K. Kobayashi;A. Fujita;K. Oikawa;R. Kainuma;K. Ishida;Norifumi Endo;K. Fukamichi;A. Sakuma
影响因子：
3.7
作者：
Miura, Y;Nagao, K;Shirai, M
通讯作者：
Shirai, M