Jump to main content
Jump to site search


Isosymmetric structural phase transition of the orthorhombic lanthanum gallate structure as a function of temperature determined by Rietveld analysis

Author affiliations

Abstract

High energy planetary ball milling has been used to synthesize pseudo-cubic highly-pure LaGaO3 in one hour from its oxide components in an air atmosphere. Calcination at different temperatures led to the crystallization of lanthanum gallate in an orthorhombic structure with its local lanthanum coordination number environment changing from 12 to 7 when the temperature was increased. This change was attributed to the thermal expansion of the Ga–O bonds that varied non-monotonically inducing GaO6 tilting. Rietveld analysis, Raman spectroscopy, and transmission electron microscopy were used to elucidate the LaGaO3 structures at different temperatures.

Graphical abstract: Isosymmetric structural phase transition of the orthorhombic lanthanum gallate structure as a function of temperature determined by Rietveld analysis

Back to tab navigation

Publication details

The article was received on 04 May 2018, accepted on 23 Aug 2018 and first published on 23 Aug 2018


Article type: Paper
DOI: 10.1039/C8CE00726H
Citation: CrystEngComm, 2018, Advance Article
  •   Request permissions

    Isosymmetric structural phase transition of the orthorhombic lanthanum gallate structure as a function of temperature determined by Rietveld analysis

    Y. Q. Tang, C. López-Cartes, M. A. Avilés and J. M. Córdoba, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00726H

Search articles by author

Spotlight

Advertisements