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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Powder diffraction studies of pressure-induced instabilities in orthorhombic LnGaO(3)

Senyshyn, A. and Engel, J. M. and Oswald, I. D. H. and Vasylechko, L. and Berkowski, M. (2009) Powder diffraction studies of pressure-induced instabilities in orthorhombic LnGaO(3). Zeitschrift fur Kristallografie (30). pp. 341-346. ISSN 0044-2968

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Abstract

Pressure evolution of LaGaO3, CeGaO3, PrGaO3, NdGaO3, La0.75Pr0.25GaO3 and La0.63Nd0.37GaO3 crystal structures was studied using powder diffraction with synchrotron radiation at ambient temperature in a broad pressure range. Structural instabilities corresponding to phase transformations have been observed in all studied compositions and it was found that P, of these transitions depends on the deformation of the perovskite structure. The effect of the pressure medium on the phase transition, bulk modulus and compressibilities of LaGaO3, CeGaO3, PrGaO3, NdGaO3, La0.75Pr0.25GaO3 and La0.63Nd0.37GaO3 has been discussed in brief.