Published December 2003 | Version v1
Journal article Metadata-only

Subsolidus phase relation and crystal structure in the Pr1+x-yBa2-x-zCay+zCu3O7±δ system

Creators

  • 1. Institute of Mineral Materials and Application, Southwest University of Science and Technology, 621002, Mianyang (China)
  • 2. Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, 100080, Beijing (China)
  • 3. International Center for Materials Physics, Chinese Academy of Sciences, 110016, Shenyang (China)

Description

The Pr1+xBa2-xCu3O7±δ solid solution was investigated by means of X-ray powder diffraction combined with Rietveld analysis. A Pr123 single phase could be synthesized under Pr-rich conditions by sintering at 950 C in air. The solubility range of Pr1+xBa2-xCu3O7±δ solid solution is 0.08≤x≤0.80. The structure of Pr1+xBa2-xCu3O7±δ for 0.08≤x<0.30 is orthorhombic. The structure transforms into tetragonal for 0.30≤x≤0.80. To form the Pr123 single phase, the Ba sites in the Pr123 structure must have partial Pr ions, and the least amount is x=0.08. Ba ions cannot occupy the sites of Pr ions. In the Pr123 structure, Ca ions can replace Pr ions; the highest value is x=0.4 in the PrBa2-xCaxCu3O7±δ system under our experimental conditions. However, Ca ions cannot replace Ba ions. The ionic radius plays a more important role than the chemical properties in the substitution between Pr, Ba and Ca ions in the Pr123 structure. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1007/s00339-002-2071-7

Additional details

Identifiers

DOI
10.1007/s00339-002-2071-7;

Publishing Information

Journal Title
Applied Physics. A, Materials Science and Processing
Journal Volume
77
Journal Issue
7
Journal Page Range
p. 915-921
ISSN
0947-8396
CODEN
APAMFC

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
34084478
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CUPRATES; DEBYE-SCHERRER METHOD; EXPERIMENTAL DATA; LATTICE PARAMETERS; ORTHORHOMBIC LATTICES; PRASEODYMIUM COMPOUNDS; SINTERED MATERIALS; SINTERING; SOLID SOLUTIONS; TETRAGONAL LATTICES; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DATA; DIFFRACTION; DIFFRACTION METHODS; DISPERSIONS; FABRICATION; HOMOGENEOUS MIXTURES; INFORMATION; MATERIALS; MIXTURES; NUMERICAL DATA; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; SOLUTIONS; TRANSITION ELEMENT COMPOUNDS