| PHASE TRANSITIONS IN Bi2Sr2(Cu1-zFez)O6+δ |
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| 引用本文： | 潘国强,G. COLLIN,S. MEGTERT.PHASE TRANSITIONS IN Bi2Sr2(Cu1-zFez)O6+δ[J].中国物理 B,1995,4(6):448-456. |
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| 作者姓名： | 潘国强 G. COLLIN S. MEGTERT |
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| 作者单位： | Department of Physics, University of Science and Technology of China, Hefei, 230026, China;Laborotoire Léon Brillouin, CEA-CNRS, Bt.563, CEN Saclay, 91191, Gif-Sur-Yvette,France;Laboratoire de Physique des Solides, Bt.510, Université Paris-Sud, 91405, Orsay, France |
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| 基金项目： | Project supported by the foundation of State Educational Commission of China for outstanding young teachers and the funds of State Educational Commission of China for the students returned from abroad. |
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| 摘 要： | We have investigated, by X-ray diffraction, a series of single crystals of Bi-based oxides with the nominal composition Bi2Sr2(Cu1-zFez)O6+δ(0≤z≤0.55). In this system we observed two structural phase transitions with the increase of the doping content. The first transition, from an incommensurate monoclinic phase to an incommensurate orthorhombic phase, occurs at a doping content of iron zFe=0.027. The second one corresponds to a phase transition from an incommensurate orthorhombic phase to a commensurate orthorhombic phase at zFe=0.34. The comparison of these results with those for more limited substitutions of Zn and Ni indicates the significant role of the insertion of the extra oxygen in the (Bi-O)∞ double layers.
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