Crystal structure and superconductivity of LaBaCu2O5+x
Xie Sishen, Yang Cuiying, Wu Xiaojing, Che Guangcan, Fan Hanjie, Chen Wei, Zhou Yuqing, Zhao Zhongxian, Yang Qiansheng, Chen Genghua, Liang Jingkui, Li Fanghua
DOI 10.1103/PhysRevB.36.2311 · Physical Review B
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Abstract
Three compounds have been found in the La-Ba-Cu-O system, LaBaCu2O5+x, La2BaCU2O6, and La2−xBaxCuO4 (x≤0.1). Single-phase samples of LaBaCu2O5+x are studied by powder x-ray diffraction and electron microscopy. Its crystallographic structure is a tetragonal superlattice based on a cubic-perovskite subcell with a=3.917 Å and triple periods. The superconductivity transition in this compound occurs around 15 K.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaBaCu2O5+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15 | Pressure not reported | onset |
| La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
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