Evidence for orbital ordering in LaCoO3

By G. Maris, Yang Ren, Volotchaev, C. Zobel, Thomas Lorenz, Thomas Palstra. 2003

185 citations recorded by the source corpus.

We present powder and single-crystal x-ray diffraction data as evidence for a monoclinic distortion in the low-spin (S=0) and intermediate spin states (S=1) of LaCoO3. The alternation of short and long bonds in the ab plane indicates the presence of e(g) orbital ordering induced by a cooperative Jahn-Teller distortion. We observe an increase of the Jahn-Teller distortion with temperature in agreement with a thermally activated behavior of the Co3+ ions from a low-spin ground state to an intermediate-spin excited state.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/1ccd0ae99c13f54d09c286b6a820f2bd9d0b7d33

Citations in the corpus

• Water electrolysis on La1−xSrxCoO3−δ perovskite electrocatalysts (2016, unknown): “The monoclinic distortion due to orbital ordering reported for this compositional range was not detected being beyond resolution of our powder X-ray diffraction experiment 29–31 .”