Growth of LiCoO2 Single Crystals by the TSFZ Method
Open Access
- 8 November 2018
- journal article
- research article
- Published by American Chemical Society (ACS) in Crystal Growth & Design
- Vol. 19 (1) , 415-420
Abstract
We have grown LiCoO2 single crystals by the traveling solvent floating zone (TSFZ) growth with Li-rich solvent, having observed incongruent melting behavior of LiCoO2 between 1100˚C and 1300 ˚C. The optimum growth conditions in terms of atmosphere and solvent composition were determined to be Ar flow and an atomic ratio Li:Co=85:15, respectively. The crystals grown using a conventional mirror-type furnace contained periodic inclusions of a Co-O phase, due to the influence of Co-O phase segregation on the stability of the molten zone during growth. By using tilted-mirrors FZ furnace, inclusion-free LiCoO2 crystals of about 5 mm φ and 70 mm long were obtained at a tilting angle θ = 10˚. The grown crystals were confirmed to be single-domain by neutron Laue diffraction.Keywords
Funding Information
- Australian Research Council (DP170100269)
- Japan Society for the Promotion of Science (JP16K05930)
- Alexander von Humboldt-Stiftung
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