Research Article

Theory of the Maximum of the Magnetic Susceptibility in YCo2

Authors: Rikio Konno, Kazuyoshi Yoshimura, Chishiro Michioka.

DOI: 10.33425/2639-9466.1041

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Abstract

We investigated the temperature dependence of the magnetic susceptibility and that of 1/(T1 T) where 1/T1 was the nuclear magnetic relaxation rate in YCo2 theoretically. The self-consistent renormalization theory of spin fluctuations (SCR theory) was used. The SCR theory includes the electronic correlations beyond the random phase approximation. The Landau expansion of the magnetic free energy was used up to 6th order of the magnetization because of the metamagnetism in YCo2 . We found that the temperature dependence of the magnetic susceptibility and that of 1/(T1 T) were consistent with the experimental data qualitatively.

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