Details
| Original language | English |
|---|---|
| Pages (from-to) | 527-535 |
| Number of pages | 9 |
| Journal | Physica B: Condensed Matter |
| Volume | 545 |
| Early online date | 2 Feb 2018 |
| Publication status | Published - 15 Sept 2018 |
Abstract
This study focuses on the size dependent flexoelectric effect of Barium Titanate Oxide (BaTiO3) and its mechanical property. The an-harmonic core-shell model is employed to study the cross-sectional size dependent properties of the BaTiO3 nanobelt. Flexoelectricity describes the relationship between the induced electrical polarization and the applied strain gradient. Molecular dynamics involved core-shell interatomic potential model predicts the electrical polarization by allowing the ion shell to react freely to the electrostatic environment induced polarizability. The competing and opposite trends of longitudinal and transverse shear flexoelectric parameters with increased sizes is found in the present study. The elastic modulus decreases with the increase in cross-section size. In both cases, the material parameters gradually converge to the existing bulk values.
Keywords
- Core-shell model, Finite size effect, Flexoelectricity, Phase transition, Young's modulus
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Electrical and Electronic Engineering
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In: Physica B: Condensed Matter, Vol. 545, 15.09.2018, p. 527-535.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Size dependent flexoelectric and mechanical properties of barium titanate nanobelt
T2 - A molecular dynamics study
AU - He, Bo
AU - Javvaji, Brahmanandam
AU - Zhuang, Xiaoying
N1 - Funding Information: The authors gratefully acknowledge the sponsorship from Sofja Kovalevskaja Programme of Alexander von Humboldt Foundation and the National Science Foundation of China ( 11772234 ).
PY - 2018/9/15
Y1 - 2018/9/15
N2 - This study focuses on the size dependent flexoelectric effect of Barium Titanate Oxide (BaTiO3) and its mechanical property. The an-harmonic core-shell model is employed to study the cross-sectional size dependent properties of the BaTiO3 nanobelt. Flexoelectricity describes the relationship between the induced electrical polarization and the applied strain gradient. Molecular dynamics involved core-shell interatomic potential model predicts the electrical polarization by allowing the ion shell to react freely to the electrostatic environment induced polarizability. The competing and opposite trends of longitudinal and transverse shear flexoelectric parameters with increased sizes is found in the present study. The elastic modulus decreases with the increase in cross-section size. In both cases, the material parameters gradually converge to the existing bulk values.
AB - This study focuses on the size dependent flexoelectric effect of Barium Titanate Oxide (BaTiO3) and its mechanical property. The an-harmonic core-shell model is employed to study the cross-sectional size dependent properties of the BaTiO3 nanobelt. Flexoelectricity describes the relationship between the induced electrical polarization and the applied strain gradient. Molecular dynamics involved core-shell interatomic potential model predicts the electrical polarization by allowing the ion shell to react freely to the electrostatic environment induced polarizability. The competing and opposite trends of longitudinal and transverse shear flexoelectric parameters with increased sizes is found in the present study. The elastic modulus decreases with the increase in cross-section size. In both cases, the material parameters gradually converge to the existing bulk values.
KW - Core-shell model
KW - Finite size effect
KW - Flexoelectricity
KW - Phase transition
KW - Young's modulus
UR - http://www.scopus.com/inward/record.url?scp=85051633912&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2018.01.031
DO - 10.1016/j.physb.2018.01.031
M3 - Article
AN - SCOPUS:85051633912
VL - 545
SP - 527
EP - 535
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
ER -