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Cerium scandateXRDPerovskiteCrystal structure[EN] The effects of high pressure on the crystal
structure of orthorhombic (Pnma) perovskite-type cerium
scandate were studied in situ under high pressure by means of
synchrotron X-ray powder diffraction, using a diamond-anvil
cell. We found that the perovskite-type crystal structure remains
stable up to 40 GPa, the highest pressure reached in the
experiments. The evolution of unit-cell parameters with pressure
indicated an anisotropic compression. The room-temperature
pressure¿volume equation of state (EOS) obtained from the
experiments indicated the EOS parameters V0 = 262.5(3) Å3
, B0
= 165(7) GPa, and B0¿ = 6.3(5). From the evolution of
microscopic structural parameters like bond distances and
coordination polyhedra of cerium and scandium, the macroscopic behavior of CeScO3 under compression was explained and
reasoned for its large pressure stability. The reported results are discussed in comparison with high-pressure results from otherReserva de todos los derechosAbiertohttp://hdl.handle.net/10251/109822American Chemical Societyapplication/pdf David Santamaria-Perez Domingo Martinez-Garcia O. Gomis Rakesh Shukla S. Nagabhusan Achary Avesh K. Tyagi Catalin PopescuInorganic ChemistryInglés
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