ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Sm(Zr)Fe7Nx+αFe composite thin films were prepared on various substrates with differing values of thermal expansion from SmxFebalZry (11.3[less, double equals]x[less, double equals]17.8,0[less, double equals]y[less, double equals]3.2) targets by the rf sputtering method followed by annealing and nitrogenation. Their phase formation and magnetic properties were studied. All of the as-deposited films were amorphous, and the only films synthesized from the target with x=84 were crystallized into a composite of Sm(Zr)Fe7+αFe by annealing. Successive nitrogenation of the films with x=84 formed Sm(Zr)Fe7Nx+αFe composites whose grain diameter was estimated to be 30–50 nm. Despite the small coercivity of the prepared films, their recoil curves showed a remarkable spring-back phenomenon which originates in the exchange coupling between Sm(Zr)Fe7Nx and α Fe grains. The addition of Zr decreased the lattice constant, and choice of substrate did not affect the grain size. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.372778
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