Bulk scattering asymmetry coefficient and degree of order for FeCo thin film

Doi, Masaaki*; Mano, Tomonori*; Shiota, Megumi*; Yuasa, Hiromi*; Takeda, Masayasu; Sahashi, Masashi*

no journal, , 

We have reported the high bulk scattering spin-asymmetry coefficient, , of an alternate monatomic layered epitaxial film (AML) [Fe/Co]. This high value of and the long-range order parameter of B structure in FeCo seem to be correlated. The neutron diffraction measurements of the AML [Fe/Co] were performed to determine the order parameter, and the value of about 0.7 was obtained. This value is consistent with a theoretical calculation. We discuss the correlation between the and the order parameter together with the results of [FeCo/Cu] and a thin film of the FeCo alloy.