TY - JOUR
T1 - Magnetic anisotropy study of UGe2in a static high magnetic field
AU - Sakon, T.
AU - Saito, S.
AU - Koyama, K.
AU - Awaji, S.
AU - Sato, I.
AU - Nojima, T.
AU - Watanabe, Kazuo
AU - Motokawa, M.
AU - Sato, N. K.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - UGe2 has orthorhombic Cmmm crystalline symmmetry and shows ferromagnetic Heavy-Fermion (HF) Superconductor, which provides superconductivity under pressure in the range from 1.0 GPa to 1.5 GPa. Magnetic field dependence of magnetization shows strong magnetic anisotropy. When a magnetic field is applied parallel to easy axis (a-axis), magnetization presents ferromagnetic behavior. At 4.2 K, which is much lower than the Curie temperature Tc 54 K. Spontaneous magnetization is 1.4 μB/U, and the magnetization gradually increase with increasing field. On the contrary, when a field is applied parallel to hard axis (b-axis or c-axis), magnetization increases linearly with increasing magnetic field. As for H//b-axis, magnetization is 0.23 μ B/U even at 27 T. Magnetocrystalline anisotropy constant is obtained as 230 [T μB] 3.4[kJ/kg] at 4.2 K. This value is comparable with rare-earth magnet Nd 2Fe17, which is typical strongly correlated ferromagnet.
AB - UGe2 has orthorhombic Cmmm crystalline symmmetry and shows ferromagnetic Heavy-Fermion (HF) Superconductor, which provides superconductivity under pressure in the range from 1.0 GPa to 1.5 GPa. Magnetic field dependence of magnetization shows strong magnetic anisotropy. When a magnetic field is applied parallel to easy axis (a-axis), magnetization presents ferromagnetic behavior. At 4.2 K, which is much lower than the Curie temperature Tc 54 K. Spontaneous magnetization is 1.4 μB/U, and the magnetization gradually increase with increasing field. On the contrary, when a field is applied parallel to hard axis (b-axis or c-axis), magnetization increases linearly with increasing magnetic field. As for H//b-axis, magnetization is 0.23 μ B/U even at 27 T. Magnetocrystalline anisotropy constant is obtained as 230 [T μB] 3.4[kJ/kg] at 4.2 K. This value is comparable with rare-earth magnet Nd 2Fe17, which is typical strongly correlated ferromagnet.
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U2 - 10.1088/1742-6596/51/1/058
DO - 10.1088/1742-6596/51/1/058
M3 - Article
AN - SCOPUS:33947656375
VL - 51
SP - 255
EP - 258
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 058
ER -