Curie temperatures of fcc and bcc nickel and permalloy: Supercell and Green’s function methods
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چکیده
The finite-temperature magnetism of Ni and permalloy in body-centered-cubic bcc and face-centered-cubic fcc phases is studied theoretically using ab initio supercell calculations and Green’s function methods. The results confirm and explain the general experimental trend that the fcc phases have higher Curie temperatures than the bcc counterparts. In addition, the spin-wave stiffness constants of bcc-Ni and bcc-permalloy are predicted.
منابع مشابه
0 Ab - initio calculations of exchange interactions , spin - wave stiffness constants , and Curie temperatures of Fe , Co , and
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تاریخ انتشار 2008