On the stability region and structure of the Nd1+xBa2-xCu3Oy solid solution

E. A. Goodilin, N. N. Oleynikov, E. V. Antipov, R. V. Shpanchenko, G. Yu Popov, V. G. Balakirev, Yu D. Tretyakov

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)

Abstract

We studied the low and upper stability boundaries and the structure evolution of the Nd1+xBa2-xCu3Oz solid solution along its single-phase field. It was found that in oxygen the limit of the solid solution extends up to Nd1.9Ba1.1Cu3Oz at 950-1050°C while at lower and higher temperatures it becomes narrower. In nitrogen atmosphere the substitution range is much smaller and x does not exceed 0.3 at 800°C. The replacement of Ba2+ by Nd3+ is accompanied by decreasing both a and c lattice constants of quenched samples. At the same time in oxygen at x ≥ 0.6 ordering phenomena occur leading to the orthorhombic distortion of the tetragonal subcell. A model of the solid solution crystal structure with a B-centered unit cell and lattice parameters a = 2asub, b = bsub and c = 2csub was suggested and refined.

Original languageEnglish
Pages (from-to)65-78
Number of pages14
JournalPhysica C: Superconductivity and its Applications
Volume272
Issue number1-2
DOIs
Publication statusPublished - 20 Nov 1996
Externally publishedYes

Keywords

  • Neodymium solid solution
  • Ordering
  • Stability region
  • Structural evolution

Fingerprint

Dive into the research topics of 'On the stability region and structure of the Nd1+xBa2-xCu3Oy solid solution'. Together they form a unique fingerprint.

Cite this