Phase identification and superconducting transitions in Sr-doped Pr{sub 1.85}Ce{sub 0.15}CuO{sub 4+{delta}}

Journal Article · Wed Oct 01 00:00:00 EDT 1997 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1997.0335· OSTI ID:554339

Varela, A ^[1]; Vallet-Regi, M ^[2]; Gonazalez-Calbet, J M ^[1]

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1. Departameto de Quimica Inorganica, Facultad de Quimicas, Universidad Complutense, 28040 Madrid (Spain)
2. Departameto de Quimica Inorganica y Bioinorganica, Facultad de Farmacia, Universidad Complutense, 28040 Madrid (Spain)

Sr-doped Pr{sub 1.85}Ce{sub 0.15}CuO{sub 4+{delta}} samples have been prepared with accurate control of the oxygen content. The stability of both T{sup {prime}} and T{sup {asterisk}} phases is strongly dependent on Sr and oxygen content. An electron diffraction study indicates that, in some cases, anionic vacancies are ordered leading to a pseudo-tetragonal superlattice with unit cell parameters 2{radical}2{bold a}{sub t}{times}{bold c}{sub t}. Structural transitions and superconducting phases created by hole doping in such a system are also reported. {copyright} {ital 1997 Materials Research Society.}

• OSTI ID: 554339
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 10 Vol. 12; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARRIER DENSITY
CERIUM OXIDES
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
HIGH-TC SUPERCONDUCTORS
MAGNETIC SUSCEPTIBILITY
MICROSTRUCTURE
PHASE STUDIES
PRASEODYMIUM OXIDES
STRONTIUM ADDITIONS
SUPERCONDUCTIVITY