The effect of the heat treatments on the antiferromagnetism in La2CuO4-δ single crystals
作者： K. Yamada , E. Kudo , Y. Endoh , Y. Hidaka , M. Oda
DOI: 10.1016/0038-1098(87)90693-4
关键词: Magnetic moment 、 Magnetic susceptibility 、 Chemistry 、 Antiferromagnetism 、 Néel temperature 、 Single crystal 、 Magnetic anisotropy 、 Condensed matter physics 、 Crystal 、 Neutron diffraction 、 Analytical chemistry
摘要: Neutron diffraction and magnetic susceptibility measurements revealed antiferromagnetic order in single crystals of La2CuO4 where both sublattice moments (MSCu) Neel temperatures (TN) strongly depend on heat treatments. Deoxidization enhances MS TN (MS=0.6±0.05μB:TN=298±5K) whereas oxidization reduces these values (MS=0.22±0.04μB:TN=135±20K) from those as-grown crystal (MS=0.38±0.05μB:TN=230±10K). A broad peak the temperature dependence near with field parallel to c-axis (a
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