Flux growth utilizing the reaction between flux and crucible
Abstract
Flux growth involves dissolving the components of the target compound in an appropriate flux at high temperatures and then crystallizing under supersaturation controlled by cooling or evaporating the flux. A refractory crucible is generally used to contain the high temperature melt. Moreover, the reaction between the melt and crucible materials can modify the composition of the melt, which typically results in growth failure, or contaminates the crystals. Thus one principle in designing a flux growth is to select suitable flux and crucible materials thus to avoid any reaction between them. In this paper, we review two cases of flux growth in which the reaction between flux and Al2O3 crucible tunes the oxygen content in the melt and helps the crystallization of desired compositions. For the case of La5Pb3O, the Al2O3 crucible oxidizes La to form a passivating La2O3 layer which not only prevents further oxidization of La in the melt but also provides [O] to the melt. Finally, in the case of La0.4Na0.6Fe2As2, it is believed that the Al2O3 crucible reacts with NaAsO2 and the reaction consumes oxygen in the melt thus maintaining an oxygen-free environment.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1185841
- Alternate Identifier(s):
- OSTI ID: 1246403
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Crystal Growth
- Additional Journal Information:
- Journal Volume: 416; Journal Issue: C; Journal ID: ISSN 0022-0248
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; A2. Growth from high temperature solutions; B2. Superconducting materials; B1. Arsenates; A1. Solubility; A1. Diffusion
Citation Formats
Yan, J. -Q. Flux growth utilizing the reaction between flux and crucible. United States: N. p., 2015.
Web. doi:10.1016/j.jcrysgro.2015.01.017.
Yan, J. -Q. Flux growth utilizing the reaction between flux and crucible. United States. https://doi.org/10.1016/j.jcrysgro.2015.01.017
Yan, J. -Q. Thu .
"Flux growth utilizing the reaction between flux and crucible". United States. https://doi.org/10.1016/j.jcrysgro.2015.01.017. https://www.osti.gov/servlets/purl/1185841.
@article{osti_1185841,
title = {Flux growth utilizing the reaction between flux and crucible},
author = {Yan, J. -Q.},
abstractNote = {Flux growth involves dissolving the components of the target compound in an appropriate flux at high temperatures and then crystallizing under supersaturation controlled by cooling or evaporating the flux. A refractory crucible is generally used to contain the high temperature melt. Moreover, the reaction between the melt and crucible materials can modify the composition of the melt, which typically results in growth failure, or contaminates the crystals. Thus one principle in designing a flux growth is to select suitable flux and crucible materials thus to avoid any reaction between them. In this paper, we review two cases of flux growth in which the reaction between flux and Al2O3 crucible tunes the oxygen content in the melt and helps the crystallization of desired compositions. For the case of La5Pb3O, the Al2O3 crucible oxidizes La to form a passivating La2O3 layer which not only prevents further oxidization of La in the melt but also provides [O] to the melt. Finally, in the case of La0.4Na0.6Fe2As2, it is believed that the Al2O3 crucible reacts with NaAsO2 and the reaction consumes oxygen in the melt thus maintaining an oxygen-free environment.},
doi = {10.1016/j.jcrysgro.2015.01.017},
journal = {Journal of Crystal Growth},
number = C,
volume = 416,
place = {United States},
year = {Thu Jan 22 00:00:00 EST 2015},
month = {Thu Jan 22 00:00:00 EST 2015}
}
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Works referencing / citing this record:
Magnetic order of Nd 5 Pb 3 single crystals
journal, March 2018
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- Journal of Physics: Condensed Matter, Vol. 30, Issue 13
Flux growth in a horizontal configuration: an analogue to vapor transport growth
text, January 2017
- Yan, J. -Q.; Sales, B. C.; Susner, M. A.
- arXiv