EPR in YBa2Cu3O7-δ and YBa2Cu3O6+x

F. J. Owens, B. L. Ramakrishna, Z. Iqbal

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Electron paramagnetic resonance (EPR) measurements on polycrystalline YBa2Cu3O7-δ prepared via the citrates and the usual ceramic route of firing the oxides and BaCO3 are reported. The single phase samples of orthorthombic YBa2Bu3O6.9 and tetragonal YBa2Cu3O6 obtained from a citrate precursor do not exhibit an EPR signal. However, a sample of the tetragonal and non-superconducting YBa2Cu3O6.15 prepared from a master sample of citrate-route synthesized YBa2Cu3O6.9 displays an EPR signal whose intensity peaks near 460 K in agreement with neutron diffraction data that show an antiferromagnetic transition in the 400 to 500 K temperature range. A probable explanation for these results is discussed.

Original languageEnglish (US)
Pages (from-to)221-224
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume156
Issue number2
DOIs
StatePublished - Sep 1 1988

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citrates
Paramagnetic resonance
electron paramagnetic resonance
Citric Acid
Citrates
routes
Neutron diffraction
Oxides
neutron diffraction
ceramics
oxides
barium copper yttrium oxide
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

EPR in YBa2Cu3O7-δ and YBa2Cu3O6+x . / Owens, F. J.; Ramakrishna, B. L.; Iqbal, Z.

In: Physica C: Superconductivity and its Applications, Vol. 156, No. 2, 01.09.1988, p. 221-224.

Research output: Contribution to journalArticle

Owens, F. J. ; Ramakrishna, B. L. ; Iqbal, Z. / EPR in YBa2Cu3O7-δ and YBa2Cu3O6+x In: Physica C: Superconductivity and its Applications. 1988 ; Vol. 156, No. 2. pp. 221-224.
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