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Title: Formation of sodium bismuth titanate-barium titanate during solid-state synthesis

Abstract

Phase formation of sodium bismuth titanate (Na 0.5Bi 0.5TiO 3 or NBT) and its solid solution with barium titanate (BaTiO 3 or BT) during the calcination process is studied using in situ high-temperature diffraction. The reactant powders were mixed and heated to 1000°C, while X-ray diffraction patterns were recorded continuously. Phase evolutions from starting materials to final perovskite products are observed, and different transient phases are identified. The formation mechanism of NBT and NBT–xBT perovskite structures is discussed, and a reaction sequence is suggested based on the observations. The in situ study leads to a new processing approach, which is the use of nano-TiO 2, and gives insights to the particle size effect for solid-state synthesis products. Lastly, it was found that the use of nano-TiO 2 as reactant powder accelerates the synthesis process, decreases the formation of transient phases, and helps to obtain phase-pure products using a lower thermal budget.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1];  [1];  [3];  [3];  [3];  [1]
  1. Department of Materials Science and Engineering, North Carolina State University, Raleigh North Carolina
  2. Nano-Phononics Lab, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro Tokyo Japan; SCHOTT AG, Hattenberg Straße 10 Mainz Germany
  3. Nano-Phononics Lab, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro Tokyo Japan
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1342704
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 100; Journal Issue: 4; Journal ID: ISSN 0002-7820
Publisher:
American Ceramic Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; heat treatment; perovskites; x-ray methods

Citation Formats

Hou, Dong, Aksel, Elena, Fancher, Chris M., Usher, Tedi-Marie, Hoshina, Takuya, Takeda, Hiroaki, Tsurumi, Takaaki, and Jones, Jacob L.. Formation of sodium bismuth titanate-barium titanate during solid-state synthesis. United States: N. p., 2017. Web. doi:10.1111/jace.14631.
Hou, Dong, Aksel, Elena, Fancher, Chris M., Usher, Tedi-Marie, Hoshina, Takuya, Takeda, Hiroaki, Tsurumi, Takaaki, & Jones, Jacob L.. Formation of sodium bismuth titanate-barium titanate during solid-state synthesis. United States. doi:10.1111/jace.14631.
Hou, Dong, Aksel, Elena, Fancher, Chris M., Usher, Tedi-Marie, Hoshina, Takuya, Takeda, Hiroaki, Tsurumi, Takaaki, and Jones, Jacob L.. Thu . "Formation of sodium bismuth titanate-barium titanate during solid-state synthesis". United States. doi:10.1111/jace.14631. https://www.osti.gov/servlets/purl/1342704.
@article{osti_1342704,
title = {Formation of sodium bismuth titanate-barium titanate during solid-state synthesis},
author = {Hou, Dong and Aksel, Elena and Fancher, Chris M. and Usher, Tedi-Marie and Hoshina, Takuya and Takeda, Hiroaki and Tsurumi, Takaaki and Jones, Jacob L.},
abstractNote = {Phase formation of sodium bismuth titanate (Na0.5Bi0.5TiO3 or NBT) and its solid solution with barium titanate (BaTiO3 or BT) during the calcination process is studied using in situ high-temperature diffraction. The reactant powders were mixed and heated to 1000°C, while X-ray diffraction patterns were recorded continuously. Phase evolutions from starting materials to final perovskite products are observed, and different transient phases are identified. The formation mechanism of NBT and NBT–xBT perovskite structures is discussed, and a reaction sequence is suggested based on the observations. The in situ study leads to a new processing approach, which is the use of nano-TiO2, and gives insights to the particle size effect for solid-state synthesis products. Lastly, it was found that the use of nano-TiO2 as reactant powder accelerates the synthesis process, decreases the formation of transient phases, and helps to obtain phase-pure products using a lower thermal budget.},
doi = {10.1111/jace.14631},
journal = {Journal of the American Ceramic Society},
number = 4,
volume = 100,
place = {United States},
year = {Thu Jan 12 00:00:00 EST 2017},
month = {Thu Jan 12 00:00:00 EST 2017}
}

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