Magnetic Resonance of ZnCr_2Se_4 with Screw Spin Structure
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概要
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Magnetic resonance of a ZnCr_2Se_4 single crystal with screw spin structure was observed in the frequency range of 38∼83 GHz at above 4.2K, mainly at 5.5K. Frequency and angular dependences of the resonance field were successfully explained by a theory of first order perturbation due to uniaxial anisotropy. Data of the resonance, together with the results of static magnetization measurements, give two isotropic molecular field constants in k space: E(0)-E(k_0)=2.15 and E(0)-E(2K_0)=-0.01 (mole) and three anisotropy constants: K(0)=0.01_5, K(k_0)=0.10 and K(2k_0)=-0.06 (mole). It is demonstrated conclusively that superexchange interaction through more than two Se ions is important in this substance.
- 社団法人日本物理学会の論文
- 1971-03-02
著者
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Siratori Kiiti
Department Of Physics Faculty Of Science Osaka University
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Siratori Kiiti
Department Of Physics Faculty Of Science Osaka Unviersity
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