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10 17, 2016;6 35362.

Single crystal growth from separated educts and its application to lithium transition-metal oxides.

F Freund, S C Williams, R D Johnson, R Coldea, P Gegenwart, A Jesche
Author Information
  1. F Freund: EP VI, Center for Electronic Correlations and Magnetism, Augsburg University, D-86159 Augsburg, Germany.
  2. S C Williams: Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
  3. R D Johnson: Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
  4. R Coldea: Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
  5. P Gegenwart: EP VI, Center for Electronic Correlations and Magnetism, Augsburg University, D-86159 Augsburg, Germany.
  6. A Jesche: EP VI, Center for Electronic Correlations and Magnetism, Augsburg University, D-86159 Augsburg, Germany.
PMID: 27748402 DOI: 10.1038/srep35362

Abstract

Thorough mixing of the starting materials is the first step of a crystal growth procedure. This holds true for almost any standard technique, whereas the intentional separation of educts is considered to be restricted to a very limited number of cases. Here we show that single crystals of α-LiIrO can be grown from separated educts in an open crucible in air. Elemental lithium and iridium are oxidized and transported over a distance of typically one centimeter. In contrast to classical vapor transport, the process is essentially isothermal and a temperature gradient of minor importance. Single crystals grow from an exposed condensation point placed in between the educts. The method has also been applied to the growth of LiRuO, LiPtO and β-LiIrO. A successful use of this simple and low cost technique for various other materials is anticipated.

References

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Journal Article Research Support, Non-U.S. Gov't
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