Journal
SOLID STATE COMMUNICATIONS
Volume 152, Issue 16, Pages 1613-1617Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2012.05.010
Keywords
Bismuth ferrite; X-ray diffraction; Phase transitions
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Funding
- National Science Council of Taiwan [NSC 100-2112-M-134-001]
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In order to evaluate the effect of impurity substitution on phase transition of BFO, we report high-pressure X-ray diffraction experiments on pure and Ba-doped BiFeO3 powders in diamond-anvil cells up to 18.7 GPa. A low-temperature hydrothermal synthesis route was utilized to fabricate these two samples. The experimental results reveal that two structural phase transitions take place in these two different samples in the investigated pressure range. As two ADXRD data sets are compared, it is shown that the intermediate phase II is not detected in Ba-doped sample. In addition, modifications in phase transition behavior and compressibility due to a minor Ba incorporation highlight the high sensitivity of BFO to variations of chemical composition. (C) 2012 Elsevier Ltd. All rights reserved.
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