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Microstructure and Magnetization Investigations of Cu-Doping Effect on La2CuO4+δ Crystal |
DONG Xiao-li1,2;ZHAO Bai-ru1;ZHAO zhong-xian1;LIU Wei1;ZHOU Lei1;XU Bo1;CHEN Hong1;CHE Guang-can1;NI Yong-ming1;YIN Bo1;LI Jing-wei1;ZHAO Li-hua2;XU Zhong-yu2 |
1National Laboratory for Superconductivity, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
2Department of Physics, Hunan University, Changsha 410012
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Cite this article: |
DONG Xiao-li, ZHAO Bai-ru, ZHAO zhong-xian et al 1997 Chin. Phys. Lett. 14 225-228 |
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Abstract Measurement and characterization were carried out on Cu-doped and undoped La2CuO4+δ samples prepared under the same conditions. The magnetization measurement on the Cu-doped La2CuO4+δ sample shows coexistence of long-range antiferromagnetic order and superconductivity. A stripe-like structure was observed at room temperature on the ab-plane of Cu-doped La2CuO4+δ sample by transmission electron microscope. While for the undoped La2CuO4+δ sample no such behavior or structure feature was found. In this letter, these phenomena were discussed in terms of phase separation.
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Keywords:
74.72.-h
74.72.Dn
74.62.Bf
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Published: 01 March 1997
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PACS: |
74.72.-h
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(Cuprate superconductors)
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74.72.Dn
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74.62.Bf
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(Effects of material synthesis, crystal structure, and chemical composition)
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Abstract
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