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Title: Single crystal growth of 67%BiFeO 3 -33%BaTiO 3 solution by the floating zone method

Abstract

The growth conditions and the resultant grain morphologies and phase purities from floating-zone growth of 67%BiFeO3-33%BaTiO3 (BF-33BT) single crystals are reported. We find two formidable challenges for the growth. First, a low-melting point constituent leads to a pre-melt zone in the feed-rod that adversely affects growth stability. Second, constitutional super-cooling (CSC), which was found to lead to dendritic and columnar features in the grain morphology, necessitates slow traveling rates during growth. Both challenges were addressed by modifications to the floating-zone furnace that steepened the temperature gradient at the melt-solid interfaces. Slow growth was also required to counter the effects of CSC. Single crystals with typical dimensions of hundreds of microns have been obtained which possess high quality and are suitable for detailed structural studies.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; China Scholarship Council
OSTI Identifier:
1411047
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Crystal Growth; Journal Volume: 481; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Ferroelectric materials; Floating zone technique; High resolution X-ray diffraction; Titanium Compounds

Citation Formats

Rong, Y., Zheng, H., Krogstad, M. J., Mitchell, J. F., and Phelan, D.. Single crystal growth of 67%BiFeO 3 -33%BaTiO 3 solution by the floating zone method. United States: N. p., 2018. Web. doi:10.1016/j.jcrysgro.2017.08.032.
Rong, Y., Zheng, H., Krogstad, M. J., Mitchell, J. F., & Phelan, D.. Single crystal growth of 67%BiFeO 3 -33%BaTiO 3 solution by the floating zone method. United States. doi:10.1016/j.jcrysgro.2017.08.032.
Rong, Y., Zheng, H., Krogstad, M. J., Mitchell, J. F., and Phelan, D.. 2018. "Single crystal growth of 67%BiFeO 3 -33%BaTiO 3 solution by the floating zone method". United States. doi:10.1016/j.jcrysgro.2017.08.032.
@article{osti_1411047,
title = {Single crystal growth of 67%BiFeO 3 -33%BaTiO 3 solution by the floating zone method},
author = {Rong, Y. and Zheng, H. and Krogstad, M. J. and Mitchell, J. F. and Phelan, D.},
abstractNote = {The growth conditions and the resultant grain morphologies and phase purities from floating-zone growth of 67%BiFeO3-33%BaTiO3 (BF-33BT) single crystals are reported. We find two formidable challenges for the growth. First, a low-melting point constituent leads to a pre-melt zone in the feed-rod that adversely affects growth stability. Second, constitutional super-cooling (CSC), which was found to lead to dendritic and columnar features in the grain morphology, necessitates slow traveling rates during growth. Both challenges were addressed by modifications to the floating-zone furnace that steepened the temperature gradient at the melt-solid interfaces. Slow growth was also required to counter the effects of CSC. Single crystals with typical dimensions of hundreds of microns have been obtained which possess high quality and are suitable for detailed structural studies.},
doi = {10.1016/j.jcrysgro.2017.08.032},
journal = {Journal of Crystal Growth},
number = C,
volume = 481,
place = {United States},
year = 2018,
month = 1
}