Results 41 to 50 of about 3,967 (182)

A structural study of BiFeO3 - PbTiO3 thin films deposited by pulsed laser deposition [PDF]

, 2011
In recent years ferroelectric thin films have received an enormous amount of attention due to their potential use in electronic device applications. Bismuth ferrite lead titanate (xBiFeO3 â (1-x)PbTiO3) thin films are of special interest due to their ...
Bygrave, Faye
core  

THE RECIPROCAL DOMAINS IN PbTiO3 CRYSTALS [PDF]

, 1972
Description des domaines particuliers dans les cristaux du PbTiO3, des domaines réciproques, qui sont caractérisés par une grande stabilité contre influence du champ électrique et dont répolarisation exige des champs 5-10 fois plus haut que le champ ...
V. G. GAVRILYATCHENKO, E. G. FESENKO
core   +1 more source

Tunable Negative Thermal Expansion in Fe/Cr‐Substituted Nd2Co17 Compounds via Magnetoelastic Coupling

Advanced Science, EarlyView.
This study achieves anisotropic thermal expansion tuning in Nd2(Co1‐xFex)17‐yCry compounds via a magnetoelastic strategy. Variable‐temperature synchrotron X‐ray diffraction reveals that increased Fe content induces switchable lattice responses. Compositional control reduces the volume expansion coefficient αV by 20% (x═0.7) and modulates TC (442–625 K),
Jiayuan Li, Chenfei Qv, Haoran Tu, Qinfen Gu, Wayne D. Hutchison, Stewart J. Campbell, Zhenxiang Cheng, Wenquan Wang, Jianli Wang   +8 more
wiley   +1 more source

Theoretical investigations of the bulk modulus in the tetra-cubic transition of PbTiO3 material

Química Nova, 2014
Resulting from ion displacement in a solid under pressure, piezoelectricity is an electrical polarization that can be observed in perovskite-type electronic ceramics, such as PbTiO3, which present cubic and tetragonal symmetries at different pressures ...
Renan A. P. Ribeiro, Sergio R. de Lázaro   +1 more
doaj   +1 more source

Zero Thermal Expansion and Local Structure in KxMnxFe2‐xMo3O12‐Based Materials

Advanced Science, EarlyView.
Local structure engineering via ion insertion drives local structural transformation from low‐symmetry P21/a to high‐symmetry R‐3c, enhancing structural flexibility and realizing a transition from positive thermal expansion to wide‐temperature‐range zero thermal expansion in KxMnxFe2‐xMo3O12‐based materials.
Gongsen He, Yongqiang Qiao, Shibo Zhao, Xin Chen, Xiangkai Hao, Kaiyue Zhao, Xinglai Yuan, Mengru Li, Wen Yin, Shintaro Kobayashi, Shogo Kawaguchi, Bingbing Fan, Rui Zhang, Qilong Gao   +13 more
wiley   +1 more source

Microscopia de força piezoeléctrica de relaxors ferroeléctricos [PDF]

, 2010
Doutoramento em Ciência e Engenharia de MateriaisNesta tese, ferroeléctricos relaxor (I dont know uf the order is correct) de base Pb das familias (Pb,La)(Zr,Ti)O3 (PLZT), Pb(Mg1/3,Nb2/3)O3-PbTiO3 (PMN-PT), Pb(Zn1/3,Nb2/3)O3-PbTiO3 (PZN-PT) foram ...
Kiselev, Dmitry
core   +1 more source

Wide Temperature Zero Thermal Expansion in Al Matrix Composites with High Thermal Conductivity

Advanced Science, EarlyView.
Strain engineering strategy is implemented on the negative thermal expansion (NTE) phase Zn1.6Mg0.4P2O7 within composites, where Al matrix‐induced compressive strain drives uniform polyhedral and unit cell evolution, thereby enabling broad and consistent thermal compensation efficacy and obtaining good thermal performance.
Jinrui Qian, Feixiang Long, Yiqing Liu, Longlong Fan, Mingqing Liao, Qilong Gao, Hao Lu, Dexiang Gao, Le Kang, Yuzhu Song, Xiuzhu Han, Yue Sun, Naike Shi, Chang Zhou, Jun Chen   +14 more
wiley   +1 more source

Two-dimensional planar size effects in epitaxial PbTiO3 thin films [PDF]

, 2018
In order to test a critical lateral dimension in two-dimensional (2D) planar ferroelectrics, epitaxial PbTiO3 thin films are patterned into discrete islands lithographically with different lateral sizes.
Baik, S, Lee, K, Kwon, SJ, Kim, K
core   +1 more source

Chiral structures of electric polarization vectors quantified by X-ray resonant scattering

Nature Communications, 2022
The polar chiral texture of the vortex or skyrmion structure in ferroelectric oxide PbTiO3/SrTiO3 superlattice attracts attention. Here, the authors report a theoretical framework to probe emergent chirality of electrical polarization textures.
Kook Tae Kim, Margaret R. McCarter, Vladimir A. Stoica, Sujit Das, Christoph Klewe, Elizabeth P. Donoway, David M. Burn, Padraic Shafer, Fanny Rodolakis, Mauro A. P. Gonçalves, Fernando Gómez-Ortiz, Jorge Íñiguez, Pablo García-Fernández, Javier Junquera, Sandhya Susarla, Stephen W. Lovesey, Gerrit van der Laan, Se Young Park, Lane W. Martin, John W. Freeland, Ramamoorthy Ramesh, Dong Ryeol Lee   +21 more
doaj   +1 more source

Colossal Photovoltaic Current in Ferroelectric Oxide by Constructing Defect Band

Advanced Science, EarlyView.
Colossal photovoltaic current density of 34.36 mA/cm2 under 375 nm illumination has been achieved in the Pb‐deficient PbTiO3 film. The ultraviolet photoresponsivity surpasses that of all reported ferroelectric materials. This enhancement is attributed to the junction effect between the Pb‐deficient and non‐defective layers.
Yiran Sun, Zhenbang Dai, Xingzhong Cao, Peng Zhang, Chen Lin, Zihang Huang, Ruian Zhang, Yi Fu, Xuanyu Jiang, He Tian, Jingjing Xue, Kaifeng Wu, Junhui Wang, Tianqi Deng, Andrew M. Rappe, Gaorong Han, Zhaohui Ren   +16 more
wiley   +1 more source