Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites

Authors
Moure, C Gutierrez, D Fernandez, JF Tartaj, J Duran, P Pena, O
Citation
C. Moure et al., Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites, B S ESP CER, 38(5), 1999, pp. 417-420
Citations number
11
Categorie Soggetti
Material Science & Engineering
Journal title
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
ISSN journal
03663175 → ACNP
Volume
38
Issue
5
Year of publication
1999
Pages
417 - 420
Database
ISI
SICI code
0366-3175(199909/10)38:5<417:PTIOHM>2.0.ZU;2-4
Abstract
The phase transition to perovskite-type structure, that occurs in some hexa gonal manganites when foreign cations are incorporated into solid solution, has been studied. Several solid solution series belonging to the Y(Mn, Ni) O-3, (Er, Ca)MnO3, (Y, Ca)MnO3, systems have been prepared by solid state r eaction between the corresponding oxides. The crystalline structure of the different solid solutions has been established. The behaviour of the (Gd, C a)MnO3 system has been taken as a reference. The obtained results are discu ssed as a function of the tolerance factor and the Mn3+/Mn4+ ratio. The tra nsition to perovskite structure is governed by this Mn3+/Mn4+ ratio rather than the increase of the tolerance factor.