Exploring the high pressure phase diagram of La$_{1-x}$Ca$_{x}$MnO$_{3}$

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dc.creatorSani, A.
dc.creatorMeneghini, C.
dc.creatorMobilio, S.
dc.creatorRay, Sugata
dc.creatorSarma, D. D.
dc.creatorAlonso, J. A.
dc.date2003-04-17
dc.date.accessioned2026-07-07T02:50:50Z
dc.date.available2026-07-07T02:50:50Z
dc.descriptionThe structure of La$_{1-x}$Ca$_{x}$MnO$_{3}$ solid solutions (x=0, 0.25, 0.50, 0.67, 1) under high pressure (up to 40-45 GPa) has been investigated by synchrotron X-ray powder diffraction (XRD) in order to characterize their volume \emph{vs.} pressure (P-V) equation of state. All the members of the solid solution, except the extreme compounds: LaMnO$_3$ and CaMnO$_{3}$, present low pressure orthorhombic P$nma$ phase evolving toward an high pressure tetragonal (I$4/mcm$) symmetry. The details of this transition are related to the Ca doping: on increasing the Ca content, the critical pressure of the transition decreases, but the energetic cost of the transition increases. This study depicts a peculiar evolution of structural distortions as a function of pressure and concentration.
dc.description12 pages, 8 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0304394
dc.identifierhttp://arxiv.org/abs/cond-mat/0304394
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21245
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleExploring the high pressure phase diagram of La$_{1-x}$Ca$_{x}$MnO$_{3}$
dc.typetext

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