Competition between the Quadrupole Interaction and Crystalline Electric Field Effect in the Antiferromagnetic Ordered Phase of NdB6
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概要
- 論文の詳細を見る
We have studied the thermal and transport properties of NdB6 focused on the anisotropic behaviors depending on the applied magnetic field direction. The magnetic field dependence of the physical properties in the type-I antiferromagnetic phase is small for $H\parallel [001]$ or [110] but is large for $H\parallel [111]$. These anisotropic behaviors are associated with the different domain distribution depending on the applied magnetic field direction. For $H\parallel [001]$ or [110], the domain with only the $\chi_{\bot}$ component is realized, and for $H\parallel [111]$, that with both the $\chi_{\bot}$ and $\chi_{\|}$ components is realized, where the competition among the crystalline electric field effect leading to the three-fold easy axis and the $O_{2}^{0}$-type ferro-quadrupole interaction leading to the four-fold easy axis and also the antiferromagnetic interaction plays an important role. This competition might be important for the appearance of the successive metamagnetic phase transitions for $H\parallel [111]$. The anisotropic behaviors of the magnetization, the specific heat and the electrical resistivity depending on the applied magnetic field direction in the type I-AFMI phase were analized by the mean field calculation by considering the different domain distribution depending on the magnetic field direction and could explain the characteristics of these anisotropic behaviors in low magnetic field region in the AFMI phase rather well.
- 2009-11-15
著者
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Sera Masafumi
Department Of Physics Faculty Of Science Nagoya University
-
Iga Fumitoshi
Department Of Physics Tohoku University
-
Tanida Hiroshi
Department Of Physics Graduate School Of Science Tohoku University:(present Office)department Of Qua
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Tanida Hiroshi
Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530
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Yonemura Takumi
Department of Quantum Matter, ADSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530
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