The influence of oxygen variation on Raman scattering and X-ray diffraction from BaCuO2-δ

Masato Kakihana; Lars Börjesson; Sten Eriksson

doi:10.1016/0921-4534(89)90679-5

The influence of oxygen variation on Raman scattering and X-ray diffraction from BaCuO_2-δ

Masato Kakihana, Lars Börjesson, Sten Eriksson

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We present a Raman scattering and X-ray diffraction study of BaCuO_2-δ subject to different heat treatments. A slight decrease in the volume of the unit cell was observed with increasing oxygen deficiency. The Raman spectrum of well oxygenated BaCuO_2-δ consists of two main peaks at 580 and 634 cm^-1 whose intensities changed dramatically with oxygen removal. It is found that a subsequent oxygen annealing recovered the original Raman feature of BaCuO_2-δ. It is stressed that gret care is required in relating Raman modes of high-T_c YBa₂Cu₃O_7-δ samples in the frequency range 550-650 cm^-1 to oxygen disorder-induced Raman scattering.

Original language	English
Pages (from-to)	1253-1254
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	162-164
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(89)90679-5
Publication status	Published - 1989 Dec
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(89)90679-5

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abstract = "We present a Raman scattering and X-ray diffraction study of BaCuO2-δ subject to different heat treatments. A slight decrease in the volume of the unit cell was observed with increasing oxygen deficiency. The Raman spectrum of well oxygenated BaCuO2-δ consists of two main peaks at 580 and 634 cm-1 whose intensities changed dramatically with oxygen removal. It is found that a subsequent oxygen annealing recovered the original Raman feature of BaCuO2-δ. It is stressed that gret care is required in relating Raman modes of high-Tc YBa2Cu3O7-δ samples in the frequency range 550-650 cm-1 to oxygen disorder-induced Raman scattering.",

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T1 - The influence of oxygen variation on Raman scattering and X-ray diffraction from BaCuO2-δ

AU - Kakihana, Masato

AU - Börjesson, Lars

AU - Eriksson, Sten

PY - 1989/12

Y1 - 1989/12

N2 - We present a Raman scattering and X-ray diffraction study of BaCuO2-δ subject to different heat treatments. A slight decrease in the volume of the unit cell was observed with increasing oxygen deficiency. The Raman spectrum of well oxygenated BaCuO2-δ consists of two main peaks at 580 and 634 cm-1 whose intensities changed dramatically with oxygen removal. It is found that a subsequent oxygen annealing recovered the original Raman feature of BaCuO2-δ. It is stressed that gret care is required in relating Raman modes of high-Tc YBa2Cu3O7-δ samples in the frequency range 550-650 cm-1 to oxygen disorder-induced Raman scattering.

AB - We present a Raman scattering and X-ray diffraction study of BaCuO2-δ subject to different heat treatments. A slight decrease in the volume of the unit cell was observed with increasing oxygen deficiency. The Raman spectrum of well oxygenated BaCuO2-δ consists of two main peaks at 580 and 634 cm-1 whose intensities changed dramatically with oxygen removal. It is found that a subsequent oxygen annealing recovered the original Raman feature of BaCuO2-δ. It is stressed that gret care is required in relating Raman modes of high-Tc YBa2Cu3O7-δ samples in the frequency range 550-650 cm-1 to oxygen disorder-induced Raman scattering.

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The influence of oxygen variation on Raman scattering and X-ray diffraction from BaCuO_2-δ

Abstract

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