Results 61 to 70 of about 19,560 (246)

Epitaxially strained [001]-(PbTiO$_3$)$_1$(PbZrO$_3$)$_1$ superlattice and PbTiO$_3$ from first principles

, 2003
The effect of layer-by-layer heterostructuring and epitaxial strain on lattice instabilities and related ferroelectric properties is investigated from first principles for the [001]-(PbTiO$_3$)$_1$(PbZrO$_3$)$_1$ superlattice and pure PbTiO$_3$ on a ...
A. Garcia, B. Noheda, C. Bungaro, Claudia Bungaro, D. Vanderbilt, D.M. Ceperley, G.-M. Rignanese, G.-M. Rignanese, H.X. Fu, J. Sigman, J.B. Neaton, J.B. Neaton, J.C. Jiang, J.P. Perdew, K. M. Rabe, M.P. Warusawithana, N.A. Pertsev, P. Hohenberg, R.D. King-Smith, S. Baroni, S.E. Park, W. Kohn, Z. Wu   +22 more
core   +1 more source

Transient Terahertz Oscillations During Photoinduced Polarization Topology Reconfiguration in Ferroelectric Superlattices

Advanced Science, EarlyView.
Terahertz resonances in crystalline heterostructures could close a spectral gap between conventional electronics and photonics while opening new windows on non‐equilibrium lattice dynamics. Femtosecond optical screening of the depolarization field in epitaxial PbTiO3/SrTiO3 superlattices launches a collective polar mode that oscillates near 1 THz and ...
Deepankar Sri Gyan, Hyeon Jun Lee, Xiangwei Guo, Youngjun Ahn, Samuel D. Marks, Mohammed H. Yusuf, Matthew Dawber, James M. Glownia, Diling Zhu, Takahiro Sato, Sanghoon Song, Haidan Wen, Jia‐Mian Hu, Paul G. Evans   +13 more
wiley   +1 more source

Photocatalytic and Photoelectrocatalytic Degradation of Methyl Orange Using Graphite/PbTiO₃ Composite

Indonesian Journal of Chemistry, 2016
Synthesis of graphite/PbTiO3 composite as a catalyst in photodegradation and photoelectrodegradation process of methyl orange have been conducted. The purposes of this research are to study the effect of radiation time, composition of composite, voltage ...
Candra Purnawan, Sayekti Wahyuningsih, Pramudita Putri Kusuma   +2 more
doaj   +1 more source

Nanosize confinement induced enhancement of spontaneous polarization in a ferroelectric nanowire

, 2010
We theoretically showed that the spontaneous polarization in ferroelectric (FE) nanowires (NWs) can be considerably enhanced due to the nanosize confinement by the first-principles calculations.
Cai, M. Q., Wang, B., Yang, G. W., Zheng, Y.   +3 more
core   +1 more source

Orbital Magnetic Moment Controlled Converse Magnetoelectric Effect in bcc‐Co3Mn/Fe/V/PMN‐PT Multiferroic Heterostructures

Advanced Science, EarlyView.
Based on orbital magnetic moment control, a material design strategy is proposed for a giant converse magnetoelectric effect in multiferroic heterostructures. This study will pioneer a promising route toward low‐power spintronic devices with an electric field.
Takamasa Usami, Yuichi Murakami, Ryota Watarai, Yu Shiratsuchi, Yoshihiro Gohda, Kohei Hamaya   +5 more
wiley   +1 more source

Comparing the Weighted Density Approximation with the LDA and GGA for Ground State Properties of Ferroelectric Perovskites

, 2004
First-principles calculations within the weighted density approximation (WDA) were performed for ground state properties of ferroelectric perovskites PbTiO$_3$, BaTiO$_3$, SrTiO$_3$, KNbO$_3$ and KTaO$_3$. We used the plane-wave pseudopotential method, a
C. Filippi, D. A. Berlincourt, D. J. Singh, D. J. Singh, E. Wiesendanger, G. J. Fischer, H. Hellmann, J. P. Perdew, O. Gunnarsson, R. E. Cohen, R. E. Cohen, R. E. Cohen, S. Dallolio, Z. Wu, Zhigang Wu   +14 more
core   +1 more source

Elastocaloric response of PbTiO3 predicted from a first-principles effective Hamiltonian [PDF]

, 2015
A first-principles based effective Hamiltonian is used within a molecular dynamics simulation to study the elastocaloric effect in PbTiO3. It is found that the transition temperature is a linear function of uniaxial tensile stress.
Barr, Jordan A., Beckman, Scott P., Nishimatsu, Takeshi   +2 more
core   +1 more source

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

Advanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim, Hyunseok Song, In Woo Oh, Dong‐Gyu Lee, Tae Kyoung Yoon, Jeyeon Lee, Byoung Jin Yoon, So‐Min Song, Iman M. Imani, Seohyun Cho, Seong Jin Kim, Chong‐Yun Kang, Sahn Nahm, Yong Seok Park, Kyung‐Hoon Cho, Jungho Ryu, Jeong Min Baik, Jun Chen, Sunghoon Hur, Hyun‐Cheol Song   +19 more
wiley   +1 more source

Investigating domain structures and superdomains in ferroelectric PbTiO3 based heterostructures on DyScO3

APL Materials
This work focuses on the complex ferroelastic/ferroelectric domain structure in the prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, with a 22 nm-thick bottom SrRuO3 electrode. High quality epitaxial growth has
L. Tovaglieri, M. Hadjimichael, P. Torruella, C.-Y. Hsu, L. Korosec, D. T. L. Alexander, P. Paruch, J.-M. Triscone, C. Lichtensteiger   +8 more
doaj   +1 more source

Poling-free relaxor-PbTiO3 single crystals

Journal of Materiomics
Relaxor-PbTiO3 ferroelectric single crystals have drawn attention aiming at high-end piezoelectric applications thanks to their excellent piezoelectric properties.
Hwang-Pill Kim, Geon-Ju Lee, Ju-Hyeon Lee, Jae-Hyeon Cho, Hye-Lim Yu, Woo-Seok Kang, Joo-Hee Kang, Ho-Yong Lee, Wook Jo   +8 more
doaj   +1 more source