The effect of tin substitution on ferroelectric ordering of Cu-O chains in YBCO oxides

Guangping Zheng, Jinxiu Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Tin-doped YBa2Cu3O7-ysuperconductors are characterized by dielectric constant, Mossbauer spectrum and acoustic internal friction measurements. The Mossbauer spectrum shows that tin goes mainly to the Cu(1) position. The structural and ferroelectric anomalies near 200 K are observed in the temperature-dependence dielectric constant and internal friction. We attribute this phenomenon to the ferroelectric ordering in the Cu-O chains. Doping of tin to the well-ordered Cu-O chains modifies the ferroelectric transition temperature. We analyse the relations between this ferroelectric phase in Cu-O chains and the charge strip phase in the CuO2plane.
Original languageEnglish
Pages (from-to)1398-1403
Number of pages6
JournalSuperconductor Science and Technology
Volume15
Issue number10
DOIs
Publication statusPublished - 1 Oct 2002
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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