期刊
TECHNICAL PHYSICS
卷 56, 期 4, 页码 531-539出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063784211040050
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Transmission electron microscopy, electron diffraction, and vibrating-sample magnetometry are used to show that a metastable hcp structure can form in both nickel and Ni-Pd alloy films during alternating sputtering of the Ni and Pd components of composite targets. The hcp lattice parameters increase monotonically when the palladium content in a sputtered target increases in the range 0-75%. The ratio of the hcp lattice parameters c/a is close to the ideal ratio for the hcp lattice (1.63) within the limits of experimental error. In the as-deposited state, nickel and Ni-Pd alloy films with an hcp structure have no magnetic moment. Upon annealing, the films transform into a ferromagnetic state with an fcc structure. The concentration dependence of the lattice parameter of the fcc solid solution a (0) is found to exhibit a positive deviation from Vegard's law, which is characteristic of alloys with a concave liquidus line.
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