Effects of the next-nearest-neighbor interaction on the phase transition of magnetic multilayers

Liqin Jiang; Qian Feng; Zhi-gao Huang

doi:10.1117/12.607366

8 December 2004 Effects of the next-nearest-neighbor interaction on the phase transition of magnetic multilayers

Liqin Jiang, Qian Feng, Zhi-gao Huang

Proceedings Volume 5774, Fifth International Conference on Thin Film Physics and Applications; (2004) https://doi.org/10.1117/12.607366
Event: Fifth International Conference on Thin Film Physics and Applications, 2004, Shanghai, China

Abstract

Based on Ising model, the effects of nearest and next-nearest neighbor interactions on the magnetic properties of films with BCC structure have been studied by an improved 4×4 transfer matrix method. The dependence of the phase transition temperature T_Con both the ratio of surface coupling to bulk one J_s/J_Band the next-nearest coupling to nearest one b and the size of the system are studied. It is found that there exists a multicritical value J_s/J_B (J_C) at which the phase transition temperature T_Cat the surface is the same as that in the body. The dependence of J_Con the value of bfor different number of surface layers is also studied. The calculated results are well consistent with the experimental facts.

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Liqin Jiang, Qian Feng, and Zhi-gao Huang "Effects of the next-nearest-neighbor interaction on the phase transition of magnetic multilayers", Proc. SPIE 5774, Fifth International Conference on Thin Film Physics and Applications, (8 December 2004); https://doi.org/10.1117/12.607366

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KEYWORDS

Magnetism

Multilayers

Monte Carlo methods

Nickel

Computer simulations

Physics

Silver

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