Structure-Property Relationships in the Layered Cuprate La2-xSrxCuSnO6

Mark T. Anderson, Kenneth R Poeppelmeier, Stephen A. Gramsch, Jeremy K. Burdett

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In an attempt to induce a metallic or superconductive state in the layered cuprate La2CuSnO6, the series La2-xSrxCuSnO6-x/2+δ (x = 0.00, 0.05, 0.10, 0.125, 0.15, 0.175, 0.20) was prepared. A solid solution forms for 0.00 <x <0.175, the overall oxygen content is 6.00 (3), and the samples are antiferromagnetic semiconductors. From neutron diffraction experiments, the compounds possess distinct copper-oxygen and tin-oxygen layers. There is a mismatch at the interface of the layers, which results in expansion of the copper-oxygen bond lengths (1.99 Å average). The copper is oxidized upon addition of strontium; however, in contrast to p -type cuprate superconductors, the in-plane copper-oxygen bond lengths increase and the axial bonds decrease. The interleaved tin-oxygen layers have a dramatic effect on the crystal chemistry, electronic structure, and properties. The electronic consequence is that empty upper and filled lower dx2 - y2 bands (upper and lower Hubbard bands) remain separated and narrow upon oxidation, which presumably prohibits superconductivity.

Original languageEnglish
Pages (from-to)164-174
Number of pages11
JournalJournal of Solid State Chemistry
Volume102
Issue number1
DOIs
Publication statusPublished - Jan 1993

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cuprates
Oxygen
Copper
oxygen
copper
Tin
Bond length
tin
Crystal chemistry
Strontium
Neutron diffraction
Superconductivity
strontium
Electronic properties
Electronic structure
neutron diffraction
Solid solutions
solid solutions
superconductivity
chemistry

ASJC Scopus subject areas

  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Structure-Property Relationships in the Layered Cuprate La2-xSrxCuSnO6. / Anderson, Mark T.; Poeppelmeier, Kenneth R; Gramsch, Stephen A.; Burdett, Jeremy K.

In: Journal of Solid State Chemistry, Vol. 102, No. 1, 01.1993, p. 164-174.

Research output: Contribution to journalArticle

Anderson, Mark T. ; Poeppelmeier, Kenneth R ; Gramsch, Stephen A. ; Burdett, Jeremy K. / Structure-Property Relationships in the Layered Cuprate La2-xSrxCuSnO6. In: Journal of Solid State Chemistry. 1993 ; Vol. 102, No. 1. pp. 164-174.
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