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

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

on Journal of the European Cerami... Jan 01, 1999

Magnetic properties of R2NiGe6ternary compounds (R...

on Journal of Alloys and Compound... Jan 01, 2005
More articles like this..