| 用电子顺磁共振和静磁化率研究Co掺杂CeFeAsO的磁性(英文) |
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| 引用本文： | 孙彬,吕艳娣,冷荣军,阮可青. 用电子顺磁共振和静磁化率研究Co掺杂CeFeAsO的磁性(英文)[J]. 低温物理学报, 2011, 0(6) |
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| 作者姓名： | 孙彬 吕艳娣 冷荣军 阮可青 |
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| 作者单位： | 中国科学技术大学物理学院物理系; |
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| 摘 要： | 我们合成了不同Co掺杂浓度的CeFe1-xCoxAsO,并测量其电输运性质和静磁化率.最佳掺杂浓度为x(Co)=0.15,且超导温度TC=11.3K.超导电性发生在很窄的掺杂范围内.静磁化率和电子顺磁共振测量显示在0.15和0.2两个组分样品中存在磁扰动.磁扰动与顺磁存在竞争关系.
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| 关 键 词： | 电子顺磁共振强度 g因子 静态磁化率 线宽 |
MAGNETIC PROPERTY IN Co-DOPED CeFeAsO STUDIED BY ELECTRON PARAMAGNETIC RESONANCE AND STATIC SUSCEPTIBILITY |
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| SUN Bin YU Yan-di LENG Rong-jun RUAN Ke-qing. MAGNETIC PROPERTY IN Co-DOPED CeFeAsO STUDIED BY ELECTRON PARAMAGNETIC RESONANCE AND STATIC SUSCEPTIBILITY[J]. Chinese Journal of Low Temperature Physics, 2011, 0(6) |
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| Authors: | SUN Bin YU Yan-di LENG Rong-jun RUAN Ke-qing |
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| Affiliation: | SUN Bin YU Yan-di LENG Rong-jun RUAN Ke-qing Department of Physics,University of Science and Technology of China 230026 |
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| Abstract: | Here we report the synthesis and basic characterization of CeFe1-xCoxAsO for several values of x.Replacing Fe with Co is expected to make electron-dope to the system and introduce disorder in the FeAs layer.For x = 0.15 superconductivity is observed at TConset = 11.3 K.Superconductivity is not observed for x = 0.05 and 0.1.Superconductivity occurs at narrow Co doping regime.Furthermore,susceptibility and electron spin resonance measurements suggest strong magnetic frustration exists in both x=0.15 and x=0.2... |
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