THE EFFECT OF LOW INTRASUBLATTICE REPULSION ON PHASE-DIAGRAM OF YBA2CU3O6+X - A MONTE-CARLO SIMULATION STUDY

被引：1
|
作者：
KHANNA, R [1 ]
WELBERRY, TR [1 ]
ANANTHAKRISHNA, G [1 ]
机构：
[1] INDIAN INST SCI,MAT RES CTR,BANGALORE 560012,KARNATAKA,INDIA
来源：
PRAMANA-JOURNAL OF PHYSICS | 1992年 / 39卷 / 04期
关键词：
OXYGEN ORDERING; PHASE DIAGRAM; YBA2CU3O6+X;
D O I：
10.1007/BF02845816
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the results of Monte Carlo simulation of the phase diagram and oxygen ordering in YBa2Cu3O6+x for low intra-sublattice repulsion. At low temperatures, apart from tetragonal (T), orthorhombic (OI) and 'double cell' ortho II phases, there is evidence for two additional orthorhombic phases labelled here as OIBAR and OIII. At high temperatures, there was no evidence for the decomposition of the OI phase into the T and OI phases. We find qualitative agreement with experimental observations and cluster-variation method results.
引用
收藏
页码：329 / 341
页数：13
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