Local structure of Y1-xCaxSr2Cu2GaO7 superconductors

J. P. Zhang, D. A. Groenke, H. Zhang, D. I. DeLoach, B. Dabrowski, Kenneth R Poeppelmeier, V. P. Dravid, L. D. Marks

Research output: Contribution to journalArticle

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Abstract

The variation in the average and local structure of the superconductor family Y1-xCaxSr2Cu2GaO7 as calcium is substituted for yttrium (x = 0.20, 0.35, and 0.40) is presented and discussed. Electron microscopy and X-ray diffraction were the primary techniques employed. The local structure found by the use of electron microscopy and X-ray diffraction agrees with that previously derived from single crystal X-ray and neutron diffraction. The gallate can be confused with the three layer perovskite structure of YBCO (YBa2Cu3O7) because of the similarity of [011]Ga≈[100]YBCO and [010]Ga≈[110]YBCO zones. However, the composition of all crystals examined were homogeneous on a 10-100 nm scale. It was also found that the twin structure varied as a function of the calcium content.

Original languageEnglish
Pages (from-to)51-60
Number of pages10
JournalPhysica C: Superconductivity and its Applications
Volume202
Issue number1-2
DOIs
Publication statusPublished - Nov 1 1992

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Superconducting materials
X ray diffraction
Electron microscopy
calcium
Calcium
electron microscopy
diffraction
gallates
Yttrium
x rays
Neutron diffraction
yttrium
Perovskite
neutron diffraction
Single crystals
Crystals
single crystals
Chemical analysis
crystals
barium copper yttrium oxide

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Zhang, J. P., Groenke, D. A., Zhang, H., DeLoach, D. I., Dabrowski, B., Poeppelmeier, K. R., ... Marks, L. D. (1992). Local structure of Y1-xCaxSr2Cu2GaO7 superconductors. Physica C: Superconductivity and its Applications, 202(1-2), 51-60. https://doi.org/10.1016/0921-4534(92)90295-N

Local structure of Y1-xCaxSr2Cu2GaO7 superconductors. / Zhang, J. P.; Groenke, D. A.; Zhang, H.; DeLoach, D. I.; Dabrowski, B.; Poeppelmeier, Kenneth R; Dravid, V. P.; Marks, L. D.

In: Physica C: Superconductivity and its Applications, Vol. 202, No. 1-2, 01.11.1992, p. 51-60.

Research output: Contribution to journalArticle

Zhang, JP, Groenke, DA, Zhang, H, DeLoach, DI, Dabrowski, B, Poeppelmeier, KR, Dravid, VP & Marks, LD 1992, 'Local structure of Y1-xCaxSr2Cu2GaO7 superconductors', Physica C: Superconductivity and its Applications, vol. 202, no. 1-2, pp. 51-60. https://doi.org/10.1016/0921-4534(92)90295-N
Zhang, J. P. ; Groenke, D. A. ; Zhang, H. ; DeLoach, D. I. ; Dabrowski, B. ; Poeppelmeier, Kenneth R ; Dravid, V. P. ; Marks, L. D. / Local structure of Y1-xCaxSr2Cu2GaO7 superconductors. In: Physica C: Superconductivity and its Applications. 1992 ; Vol. 202, No. 1-2. pp. 51-60.
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