Crystal structure resolution of an insulator due to the cooperative Jahn-Teller effect through Bader's theory: The challenging case of cobaltite oxide Y114

Christian Tantardini, Enrico Benassi

Research output: Contribution to journalArticle

Abstract

Cobaltite YBaCo4O7, abbreviated as Y114, is one of the most thoroughly investigated perovskites, owing largely to its interesting magnetic properties. Y114 is an insulator as a result of the cooperative Jahn-Teller effect, where one electron jumps quickly from one cobalt site to another, making it impossible to experimentally assign the correct oxidation state for each of the two cobalt sites. The present study solved the ambiguity by means of state-of-the-art DFT calculations. The two cobalt sites were differentiated through an analysis of charge density within the framework of the quantum theory of atoms in molecules.

Original languageEnglish
Pages (from-to)5483-5491
Number of pages9
JournalDalton Transactions
Volume47
Issue number15
DOIs
Publication statusPublished - 1 Jan 2018

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Jahn-Teller effect
Cobalt
Oxides
Crystal structure
Quantum theory
Charge density
Discrete Fourier transforms
Magnetic properties
Atoms
Oxidation
Molecules
Electrons
cobaltite

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

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