Evolution of structure, transport properties and magnetism in ternary lithium nitridometalates Li3-x-yMxN, M = Co, Ni, Cu

Zlatka Stoeva, Ruben Gomez, Duncan H. Gregory, Gary B. Hix, Jeremy J. Titman

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The structures, magnetism and ion transport properties of the ternary nitrides Li3-x-yMxN (M = Co, Ni, Cu; y = lithium vacancy) were examined by powder X-ray diffraction, solid-state NMR and SQUID magnetometry. Doping levels are achieved up to x ≈ 0.4 for M = Cu and Co, but much higher substitution levels (x ≈ 1) are obtained in the Li-Ni-N system. Transition metals substitute for Li at the Li(1) interplanar site and the ensuing lithium vacancies are disordered within the [Li2N] planes. High substitution levels in the Li-Ni-N system lead to the formation of ordered phases. Diffusion parameters, including activation energies, correlation times and diffusion coefficients, were obtained from variable-temperature solid-state NMR measurements in several ternary compounds. SQUID magnetometry shows significant variations of the electronic properties with dopant and x. The properties of the ternary nitrides can be rationalised in terms of the identity of the dopant and the structural modifications arising from the substitution process.

Original languageEnglish
Pages (from-to)3093-3097
Number of pages5
JournalDalton Transactions
Issue number19
DOIs
Publication statusPublished - Oct 7 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

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