Results 181 to 190 of about 19,560 (246)

Negative‐Pressure‐Induced Large Polarization in Nanosized PbTiO3

Advances in Materials, 2020
Ferroelectric materials usually undergo decay with particle size decreasing into the nanoscale. At the critical value, the crystal structure undergoes a transition from the ferroelectric to paraelectric phase and the ferroelectricity vanishes.
Jing Sun, Qiang Li, He Zhu, Zhanning Liu, K. Lin, Na Wang, Qinghua Zhang, L. Gu, J. Deng, Jun Chen, X. Xing   +10 more
semanticscholar   +1 more source

Ferroelectric properties of PbTiO3

Physica, 1962
Abstract A new method for growing single crystals of ferroelectric PbTiO3 is described. A mixture of TiO2, Pb3O4 and KF in the ratio 1 : 2.5 : 6.5 is taken in a platinum crucible and heated to a temperature of about 900°C to 950°C for about 20 hours. The melt is then slowly cooled to room temperature.
V.G. Bhide, K.G. Deshmukh, M.S. Hegde
openaire   +1 more source

Reconstructing Ferroelectric Polarization Screening of PbTiO3 by Epitaxial SrTiO3 for Efficient Photocatalytic Overall Water Splitting

Advanced Functional Materials
A large depolarization field in single‐domain PbTiO3 is anticipated to drive the spatial separation of photogenerated charge carriers and enable potential active sites for photocatalytic overall water splitting reaction. However, the negatively polarized
Peipei Du, Jie Huang, Zixing Ye, Chao Zhen, Jianan Liu, Yang Yang, Zhaohui Ren, Lichang Yin, Lianzhou Wang, Gang Liu   +9 more
semanticscholar   +1 more source

Thickness dependence of dielectric and piezoelectric properties for alternating current electric-field-poled relaxor-PbTiO3 crystals

Journal of Applied Physics, 2019
Relaxor-PbTiO3 crystals possess ultrahigh piezoelectricity when compared with state-of-the-art Pb(Zr,Ti)O3 ceramics. Recently, even higher piezoelectricity is observed in alternating current electric-field-poled (AC-poled) crystals. This poling technique
Chaorui Qiu, Jinfeng Liu, Fei Li, Zhuo Xu   +3 more
semanticscholar   +1 more source

An energy band compactable B-rGO/PbTiO3 p-n junction: a highly dynamic and durable photocatalyst for enhanced photocatalytic H2 evolution.

Nanoscale, 2019
Reduced graphene oxide (rGO) intentionally doped with boron atoms is a promising tactic to extract bandgap energy and p-type semiconducting behavior from graphene-based materials.
Lekha Paramanik, K. H. Reddy, K. Parida
semanticscholar   +1 more source

Coexistence of two ferroelectric phases and improved room-temperature multiferroic properties in the (0.70)BiFe1 − xCoxO3–(0.30)PbTiO3 system

, 2020
In the present time, the focus of many researchers is to enhance the multiferroic properties of pure and doped BiFeO3 (BFO) based materials. However, the materials community has not yet achieved the desired multiferroic properties in single doped BiFeO3.
S. Sharma, R. Dwivedi, J. Siqueiros, O. Raymond Herrera   +3 more
semanticscholar   +1 more source

Visualization of spontaneous electronic polarization in Pb ion of ferroelectric PbTiO3 by synchrotron-radiation x-ray diffraction

, 2020
In this study, we accurately visualized the valence electron density distributions of ferroelectrics PbTiO3 and BaTiO3 by analyzing synchrotron-radiation powder x-ray diffraction (SXRD) data using the Rietveld method and the maximum entropy method. Clear
T. Abe, Sangwook Kim, C. Moriyoshi, Y. Kitanaka, Y. Noguchi, Hiroshi Tanaka, Y. Kuroiwa   +6 more
semanticscholar   +1 more source

Thickness-dependent evolution of piezoresponses and a/c domains in [101]-oriented PbTiO3 ferroelectric films

Journal of Applied Physics, 2020
It is known that high-index perovskite ferroelectric thin films exhibit giant permittivity, piezoelectric response, and a particular switching behavior. However, the fine domain configuration in high-index ferroelectric films is not yet clarified, which ...
Yanpeng Feng, Y. Tang, Y. L. Zhu, M. Zou, Yuzheng Wang, X. Ma   +5 more
semanticscholar   +1 more source

Periodic vortex-antivortex pairs in tensile strained PbTiO3 films

, 2020
Topological lattices such as vortices are of importance in both scientific research and application potential. Here, we observed periodic vortex-antivortex pairs in PbTiO3/SrTiO3 multilayered films deposited on orthorhombic (110)-oriented GdScO3 by ...
Y. T. Chen, Y. Tang, Y. L. Zhu, Y. J. Wang, M. J. Han, M. Zou, Y. Feng, W. Geng, F. Gong, X. Ma   +9 more
semanticscholar   +1 more source

Stupendous Photocatalytic Activity of p-BiOI/n-PbTiO3 Heterojunction: The Significant Role of Oxygen Vacancies and Interface Coupling

Journal of Physical Chemistry C, 2019
The combination of oxygen vacancies and p-n heterojunctions is exploited to pinpoint a valuable opportunity for effective minimization of charge recombination and enhanced photocatalytic activity.
Lekha Paramanik, K. H. Reddy, K. Parida
semanticscholar   +1 more source