STRUCTURAL-CHANGES IN BI2SR2CACU2O8+X SINGLE-CRYSTALS BETWEEN 20-DEGREES-C AND 875-DEGREES-C

被引：18

作者：

BDIKIN, IK

DOROKHOVA, NA

LENCHINENKO, DY

KULAKOV, MP

SHEKHTMAN, VS

SHMYTKO, IM

机构：

[1] Institute of Solid State Physics, 142432 Chernogolovka, Moscow district

来源：

PHYSICA C | 1992年 / 196卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90159-A

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Structure changes in Bi2Sr2CaCu2O8+x. (2212) single crystals were investigated by X-ray methods between 20-degrees-875-degrees-C. It was shown that the crystal is not orthorhombic as was believed. It has a monoclinic cell that changes from a primitive to a side-centered one above 450-degrees-C. It was also shown that some of the crystals have a monoclinic twin structure. The annealing of the single phase samples above 500-degrees-C led to the emergence of new phases which had lattice parameters c= 9.4 angstrom and c = 24.6 angstrom, were coherent with the initial matrix and reconstructed into each other under subsequent heating.

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页码：191 / 199

页数：9

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