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

Here, the growth conditions and the resultant grain morphologies and phase purities from floating-zone growth of 67%BiFeO 3-33%BaTiO 3 (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:
 [1] ;  [1] ;  [2] ;  [1] ;  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of Crystal Growth
Additional Journal Information:
Journal Volume: 481; Journal Issue: C; Journal ID: ISSN 0022-0248
Publisher:
Elsevier
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Ferroelectric materials; Floating zone technique; High resolution X-ray diffraction; Titanium Compounds
OSTI Identifier:
1411047

Rong, Y., Zheng, H., Krogstad, M. J., Mitchell, J. F., and Phelan, D.. Single crystal growth of 67%BiFeO3-33%BaTiO3 solution by the floating zone method. United States: N. p., 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%BiFeO3-33%BaTiO3 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.. 2017. "Single crystal growth of 67%BiFeO3-33%BaTiO3 solution by the floating zone method". United States. doi:10.1016/j.jcrysgro.2017.08.032. https://www.osti.gov/servlets/purl/1411047.
@article{osti_1411047,
title = {Single crystal growth of 67%BiFeO3-33%BaTiO3 solution by the floating zone method},
author = {Rong, Y. and Zheng, H. and Krogstad, M. J. and Mitchell, J. F. and Phelan, D.},
abstractNote = {Here, 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 = {2017},
month = {9}
}