Sur l'evolution des proprietes physiques de la perovskite GdCoO3 entre 77 et 1200 K |
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| Authors: | A CasalotP Dougier P Hagenmuller |
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| Institution: | Service de Chimie Minérale Structurale de la Faculté des Sciences de Bordeaux associé au C.N.R.S., 351, cours de la Libération, 33-Talence, France |
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| Abstract: | GdCoO3, which has the GdFeO3 structure, has been studied between 77 and 1200 K by D.T.A., X-ray diffraction, magnetic susceptibility, electric conductivity and thermoelectric power. All properties observed, although different from those of LaCoO3, fit with the corresponding Goodenough localized electron model. With rising temperature cobalt ions pass progressively from a low-spin CoIII(t62geg0) state to a Co3+(t42geg2) high-spin state. |
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