Affordable Access

Publisher Website

Size effect in rare earth stabilization of Bi2BaLnCuO6+δfamily

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
225
Identifiers
DOI: 10.1016/0925-8388(94)07104-7
Keywords
  • Enthalpy Of Formation
  • Layered Cuprates
  • Relative Stability

Abstract

Abstract Using the solution calorimetry technique, the formation enthalpies for the Bi 2MLaCuO 6.5 (M  Ba, Ba 0.5Sr 0.5 and Sr) phases at 323 K were obtained. The values are equal to 2201, 2217 and 2227 kJ mol −1 for M  Ba, Ba 0.5Sr 0.5 and Sr respectively. On the basis of these data and an estimation of the lattice energies for perovskite-like BaBi 0.5Ln 0.5O 3 phases, a simulation of the reaction Bi 2BaLnCuO 6.5=BaBi 0.5Ln 0.5O 2.5+CuO+Bi 1.5Ln 0.5O 3 for Ln  La, Pr, Nd, Sm, Eu, Gd, Dy and Y was performed. The steeper dependence of the lattice energies of perovskite-like phases on the rare earth metal radii relative to the BaBi 0.5Ln 0.5O 3 phases determines the possibility of the formation of 2201-type structures for different rare earth elements in the BiBaLnCuO system near the 2:1:1:1 composition.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Magnetic and magnetoelectric measurements on rare-...

on Journal of Magnetism and Magne... Jan 01, 2000

Effect of electron irradiation in Bi2Sr2CaCu2O8and...

on Physica C Superconductivity Jan 01, 1995

Dielectric properties of rare earth doped (Sr,Ba)N...

on Journal of the European Cerami... Jan 01, 1999
More articles like this..