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

doi:10.1103/PhysRevB.35.7195

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

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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
卷	35
發行號	13
DOIs	https://doi.org/10.1103/PhysRevB.35.7195
出版狀態	Published - 1987

All Science Journal Classification (ASJC) codes

凝聚態物理學

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10.1103/PhysRevB.35.7195

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abstract = "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.",

author = "Moss, {S. C.} and K. Forster and Axe, {J. D.} and H. You and D. Hohlwein and Cox, {D. E.} and Hor, {P. H.} and Meng, {R. L.} and Chu, {C. W.}",

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AU - Moss, S. C.

AU - Forster, K.

AU - Axe, J. D.

AU - You, H.

AU - Hohlwein, D.

AU - Cox, D. E.

AU - Hor, P. H.

AU - Meng, R. L.

AU - Chu, C. W.

PY - 1987

Y1 - 1987

N2 - 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.

AB - 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.

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

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