High-resolution synchrotron x-ray study of the structure of La1.8Ba0.2CuO4-y

S. C. Moss, K. Forster, J. D. Axe, H. You, D. Hohlwein, D. E. Cox, P. H. Hor, R. L. Meng, C. W. Chu

研究成果: Article同行評審

40 引文 斯高帕斯(Scopus)

摘要

X-ray diffraction of La1.8Ba0.2CuO4-y reveals two macroscopically segregated tetragonal (K2NiF4-type) phases of nearly identical lattice parameter. Many peaks show additional broadening upon cooling. This broadening is consistent with a spontaneous monoclinic distortion, with an onset temperature of 150 K, and is possibly relevant to the superconducting properties. Small single crystals of 70 m diameter within the powder aggregate are also studied and show a similar two-phase constituency and a resolvable peak splitting at low temperature.

原文English
頁(從 - 到)7195-7198
頁數4
期刊Physical Review B
35
發行號13
DOIs
出版狀態Published - 1987

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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