Effect of annealing upon the high-Tc superconductor Bi2Sr2CaCu2O8+δ

S. T. Johnson; P. D. Hatton; A. J.S. Chowdhury; J. Gardner; G. Balakrishnan; D. Mc K. Paul; J. Hodby

doi:10.1016/S0921-4534(97)01849-2

Effect of annealing upon the high-T_c superconductor Bi₂Sr₂CaCu₂O_8+δ

S. T. Johnson, P. D. Hatton, A. J.S. Chowdhury, J. Gardner, G. Balakrishnan, D. Mc K. Paul, J. Hodby

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

6 Scopus citations

Abstract

The relationship between carrier concentration, structure and composition in Bi₂Sr₂CaCu₂O_8+δ is amongst the most complex of the high-T_c superconducting cuprates. In this paper a number of structural subtleties of the system are discussed based on the results of high-resolution X-ray scattering measurements from single crystals. It is found that the annealing of an oxygen-rich crystal significantly changes the character of certain diffuse scattering features. Accompanying analysis of composition and measurements of T_c suggest these changes may be the signature of oxygen ordering which is influential to the superconductivity.

Original language	English
Pages (from-to)	240-248
Number of pages	9
Journal	Physica C: Superconductivity and its Applications
Volume	299
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(97)01849-2
State	Published - Apr 20 1998
Externally published	Yes

Funding

We are grateful to H. Vass for his technical assistance in this experiment. Financial support was provided by the Engineering and Physical Sciences Research Council. STJ is grateful to the Department of Social Security for support during the writing of this paper, and to the School of Physics, The University of Birmingham for hosting its completion.

Funders	Funder number
Engineering and Physical Sciences Research Council

Keywords

Modulated structures
Oxygen vacancies
Structural phase transformation
Structure of BiSrCaCuO
X-ray diffraction

Access to Document

10.1016/S0921-4534(97)01849-2

Cite this

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AU - Balakrishnan, G.

AU - Paul, D. Mc K.

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