Competing anisotropies in bcc Fe81Ni19/Co(001) superlattices

Contains fulltext : 75351.pdf (publisher's version ) (Open Access)3 p

Magnetic anisotropy and evolution of ground-state domain structures in bcc Fe81Ni19/Co(001) superlattices

Contains fulltext : 71918.pdf (publisher's version ) (Open Access)15 p

Low-angle neutron and x-ray scattering of hydrogenated and deuterated Mo/V superlattices

International audienceWe present results from low-angle neutron and x-ray scattering experiments on hydrogen and deuterium loaded (001)-oriented single-crystal Mo/V superlattices. The individual Mo and V layer thicknesses in the samples were determined by simulations of the x-ray reflectivity curves. The intensity of the first-order neutron-diffraction peak for the hydrogenated sample is 31% larger than from the dehydrogenated sample. When deuterated, the intensity of the first-order peak is extremely small, only 0.5% of the dedeuterated sample. The distribution of hydrogen in the layers was derived by simulations of the neutron and the x-ray diffraction patterns. The results unambiguously demonstrate that the hydrogen isotopes are exclusively located in the V layers, but at the interfaces there is a region with reduced hydrogen concentration

Structural symmetry of YD3 epitaxial thin films

A thin-film laminated structure comprised of Pd(5 nm)/Nb(5 nm)/Y(500 nm)/Nb(5 nm) on α-Al2O3(110) was synthesized by molecular beam epitaxy to yield a crystalline Y layer with the c axis oriented perpendicular to the growth plane. Neutron diffraction and topographical measurements of the epitaxial YD3 layer formed after deuteriding the Y metal layer were consistent with a twinlike structure possessing P63cm and/or P3c1 symmetry. ©2000 The American Physical Society