Abstract
The effect of cation substitution on the crystal and electronic structures of ferroelectric bismuth titanate has been systematically investigated. According to the x-ray diffraction analyses on Bi3.25A 0.75Ti3O12 (A = Bi, La, Gd, and Y), it was found that the cation substitution gives rise to the contraction of the volume of the unit cell and to the decrease of the structural distortion of the bismuth titanate, as well. The present x-ray absorption spectroscopic results reveal that the local structural change upon chemical reduction is remarkably depressed by the cation substitution through the enhancement of (Ti - O) bonds. Such a stabilization of TiO6 octahedra can be understood by a competition between adjacent (Bi - O) and (Ti - O) bonds as well as the contraction of the unit cell.
| Original language | English |
|---|---|
| Pages (from-to) | 4130-4132 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 85 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2004 Nov 1 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
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Evolution of the chemical bonding nature of ferroelectric bismuth titanate upon cation substitution. / Hur, Su Gil; Park, Dae Hoon; Kim, Tae Woo; Hwang, Seong Ju.
In: Applied Physics Letters, Vol. 85, No. 18, 01.11.2004, p. 4130-4132.Research output: Contribution to journal › Article
TY - JOUR
T1 - Evolution of the chemical bonding nature of ferroelectric bismuth titanate upon cation substitution
AU - Hur, Su Gil
AU - Park, Dae Hoon
AU - Kim, Tae Woo
AU - Hwang, Seong Ju
PY - 2004/11/1
Y1 - 2004/11/1
N2 - The effect of cation substitution on the crystal and electronic structures of ferroelectric bismuth titanate has been systematically investigated. According to the x-ray diffraction analyses on Bi3.25A 0.75Ti3O12 (A = Bi, La, Gd, and Y), it was found that the cation substitution gives rise to the contraction of the volume of the unit cell and to the decrease of the structural distortion of the bismuth titanate, as well. The present x-ray absorption spectroscopic results reveal that the local structural change upon chemical reduction is remarkably depressed by the cation substitution through the enhancement of (Ti - O) bonds. Such a stabilization of TiO6 octahedra can be understood by a competition between adjacent (Bi - O) and (Ti - O) bonds as well as the contraction of the unit cell.
AB - The effect of cation substitution on the crystal and electronic structures of ferroelectric bismuth titanate has been systematically investigated. According to the x-ray diffraction analyses on Bi3.25A 0.75Ti3O12 (A = Bi, La, Gd, and Y), it was found that the cation substitution gives rise to the contraction of the volume of the unit cell and to the decrease of the structural distortion of the bismuth titanate, as well. The present x-ray absorption spectroscopic results reveal that the local structural change upon chemical reduction is remarkably depressed by the cation substitution through the enhancement of (Ti - O) bonds. Such a stabilization of TiO6 octahedra can be understood by a competition between adjacent (Bi - O) and (Ti - O) bonds as well as the contraction of the unit cell.
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U2 - 10.1063/1.1814818
DO - 10.1063/1.1814818
M3 - Article
AN - SCOPUS:10044277097
VL - 85
SP - 4130
EP - 4132
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 18
ER -