Atomic and magnetic structure of the heusler alloys Pd2MnGe, Pd2MnSn, Cu2MnIn, and CoMnSb
M.G. NateraBhabha Atomic Research Centre, Nuclear Physics Division, Trombay, BombayM.R.L.N. MurthyBhabha Atomic Research Centre, Nuclear Physics Division, Trombay, BombayR.J. BegumBhabha Atomic Research Centre, Nuclear Physics Division, Trombay, BombayN. Sanjeeva MurthyBhabha Atomic Research Centre, Nuclear Physics Division, Trombay, Bombay
1970en
ABI
Аннотация
A detailed neutron diffraction study of Pd2MnSn and Cu2MnIn shows that both have the fully ordered L21 type of Heusler alloy structure and are ferromagnetic with 190 and 575 °K as their respective Curie temperatures. Pd2MnGe shows a preferentially disordered L21 structure with 0.98 Pd + 0.02 Mn on the A- and C-sites and 0.96 Mn + 0.04 Pd on the B-sites. The B-site Mn moments are aligned antiparallel to those on the A- and C-sites and its Curie temperature is 260 °K. The alloy CoMnSb has been found to have an incompletely filled L21 structure and is ferromagnetic below 430 °K.
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