In:
Applied Physics Letters, AIP Publishing, Vol. 52, No. 22 ( 1988-05-30), p. 1901-1903
Abstract:
An orthorhombic-to-tetragonal phase transformation in YLaxBa2−xCu3O7 has been observed as a function of x, but with the same oxygen concentration, from x-ray powder diffraction data. Compounds with x≤0.37 have Tc in the 93–53 K range and are orthorhombic, while compounds with x≥0.45 have Tc≤42 K and are tetragonal. An analysis of the YLa0.6Ba1.4Cu3O6.99 diffraction pattern suggests that the tetragonal structure is closely related to those of the orthorhombic YBa2Cu3O7 and the tetragonal YBa2Cu3O6 with a partial substitution of La3+ ion on the Ba2+ site and a disorder of oxygen atoms at the midpoints of both a and b unit cell edges.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
1988
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
Permalink