Year: 2006
Type: article
Abstract: We report the continuous variation of the spin moment of cobalt in ${\mathrm{LaCoO}}_{3}$ across its temperature and pressure-induced spin transitions evidenced with $K\ensuremath{\beta}$ emission spectra. The first thermal transition is best described by a transition to an orbitally nondegenerate intermediate spin $(S=1)$ state. In parallel, continuous redistribution of the $3d$ electrons is also indicated by partial fluorescence yield x-ray absorption spectra. At high pressure, our study confirms that the material becomes low spin between 40 and 70 kbar at room temperature.
Source: Physical Review B
Institutions: European Synchrotron Radiation Facility, Centre National de la Recherche Scientifique, Laboratoire de Chimie Physique - Matière et Rayonnement, University of Helsinki, Eötvös Loránd University, Institut de minéralogie, de physique des matériaux et de cosmochimie, Université Pierre-et-Marie-Curie
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1761883047