Half-metallic ferrimagnetism in the Ti 2CoAl Heusler compound

Half-metallic ferrimagnetism in the Ti 2CoAl Heusler compound
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DOI:
10.1016/j.jmmm.2011.05.062
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发表时间:
2011-12
影响因子:
2.7
通讯作者:
E. Bayar;N. Kervan;S. Kervan
E. Bayar;N. Kervan;S. Kervan
中科院分区:
材料科学3区
文献类型:
--
作者:
E. Bayar;N. Kervan;S. Kervan

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对Ti2CoAl Heusler化合物进行的密度泛函计算证实它是一种半金属亚铁磁体,自旋能隙为0.49eV。Ti_2CoAl Heusler化合物在平衡晶格常数a= 6.14 μ m时的磁矩为2μ B。Ti2CoAl Heusler化合物是亚铁磁性的,并且对于在5.85和6.44 Ω之间的晶格常数范围具有100%极化的半金属特性。
Density functional calculations performed on the Ti2CoAl Heusler compound confirm it to be a half-metallic ferrimagnet with the spin-down energy gap of 0.49eV. The Ti2CoAl Heusler compound has a magnetic moment of 2μBat the equilibrium lattice constant a=6.14Å. The Ti2CoAl Heusler compound is ferrimagnetic and maintains the half-metallic character having 100% polarization for lattice constants ranging between 5.85 and 6.44Å.