scholarly journals Piezoelectric Materials: Enhanced Piezoelectric Response due to Polarization Rotation in Cobalt-Substituted BiFeO3 Epitaxial Thin Films (Adv. Mater. 39/2016)

2016 ◽  
Vol 28 (39) ◽  
pp. 8785-8785 ◽  
Author(s):  
Keisuke Shimizu ◽  
Hajime Hojo ◽  
Yuichi Ikuhara ◽  
Masaki Azuma
Keyword(s):  
Thin Films ◽  
Piezoelectric Materials ◽  
Piezoelectric Response ◽  
Epitaxial Thin Films ◽  
Polarization Rotation

High-Performance Piezoelectric Crystals, Ceramics, and Films

2018 ◽  
Vol 48 (1) ◽  
pp. 191-217 ◽  
Author(s):  
Susan Trolier-McKinstry ◽  
Shujun Zhang ◽  
Andrew J. Bell ◽  
Xiaoli Tan
Keyword(s):  
Thin Films ◽  
Small Molecules ◽  
Single Crystals ◽  
Applied Electric Field ◽  
High Performance ◽  
Piezoelectric Effect ◽  
Piezoelectric Materials ◽  
Inorganic Materials ◽  
Piezoelectric Response ◽  
Piezoelectric Crystals

Piezoelectric materials convert between electrical and mechanical energies such that an applied stress induces a polarization and an applied electric field induces a strain. This review describes the fundamental mechanisms governing the piezoelectric response in high-performance piezoelectric single crystals, ceramics, and thin films. While there are a number of useful piezoelectric small molecules and polymers, the article focuses on inorganic materials displaying the piezoelectric effect. Piezoelectricity is first defined, and the mechanisms that contribute are discussed in terms of the key crystal structures for materials with large piezoelectric coefficients. Exemplar systems are then discussed and compared for the cases of single crystals, bulk ceramics, and thin films.

Giant piezoelectricity in oxide thin films with nanopillar structure

Science ◽  
2020 ◽  
Vol 369 (6501) ◽  
pp. 292-297
Author(s):  
Huajun Liu ◽  
Haijun Wu ◽  
Khuong Phuong Ong ◽  
Tiannan Yang ◽  
Ping Yang ◽  
...  
Keyword(s):  
Thin Films ◽  
High Performance ◽  
Piezoelectric Materials ◽  
Functional Materials ◽  
Perovskite Oxide ◽  
Piezoelectric Response ◽  
Chemical Compositions ◽  
Oxide Thin Films ◽  
Sensors And Actuators ◽  
Local Heterogeneity

High-performance piezoelectric materials are critical components for electromechanical sensors and actuators. For more than 60 years, the main strategy for obtaining large piezoelectric response has been to construct multiphase boundaries, where nanoscale domains with local structural and polar heterogeneity are formed, by tuning complex chemical compositions. We used a different strategy to emulate such local heterogeneity by forming nanopillar regions in perovskite oxide thin films. We obtained a giant effective piezoelectric coefficient d33,f* of ~1098 picometers per volt with a high Curie temperature of ~450°C. Our lead-free composition of sodium-deficient sodium niobate contains only three elements (Na, Nb, and O). The formation of local heterogeneity with nanopillars in the perovskite structure could be the basis for a general approach to designing and optimizing various functional materials.

Domain Evolution and Piezoelectric Response across Thermotropic Phase Boundary in (K,Na)NbO3-Based Epitaxial Thin Films

2017 ◽  
Vol 9 (15) ◽  
pp. 13315-13322 ◽  
Author(s):  
Jin Luo ◽  
Wei Sun ◽  
Zhen Zhou ◽  
Yu Bai ◽  
Zhan Jie Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Boundary ◽  
Piezoelectric Response ◽  
Epitaxial Thin Films ◽  
Domain Evolution

Enhanced Piezoelectric Response due to Polarization Rotation in Cobalt-Substituted BiFeO3Epitaxial Thin Films

2016 ◽  
Vol 28 (39) ◽  
pp. 8639-8644 ◽  
Author(s):  
Keisuke Shimizu ◽  
Hajime Hojo ◽  
Yuichi Ikuhara ◽  
Masaki Azuma
Keyword(s):  
Thin Films ◽  
Piezoelectric Response ◽  
Polarization Rotation

Piezoelectric Response and Polarization-Dependent Conductivity of Grain Boundaries in BiFeO3 Thin Films

2019 ◽  
Author(s):  
D.O. Alikin ◽  
Y. Fomichov ◽  
S.P. Reis ◽  
A.S. Abramov ◽  
D.S. Chezganov ◽  
...  
Keyword(s):  
Thin Films ◽  
Grain Boundaries ◽  
Piezoelectric Response ◽  
Bifeo3 Thin Films

Piezoelectric Response to Pressure of Aluminum Nitride Thin Films Prepared on Nickel-Based Superalloy Diaphragms

2006 ◽  
Vol 45 (6A) ◽  
pp. 5169-5173 ◽  
Author(s):  
Ichiro Ohshima ◽  
Morito Akiyama ◽  
Akira Kakami ◽  
Tatsuo Tabaru ◽  
Toshihiro Kamohara ◽  
...  
Keyword(s):  
Thin Films ◽  
Aluminum Nitride ◽  
Piezoelectric Response ◽  
Nickel Based Superalloy

scholarly journals Alkali-deficiency driven charged out-of-phase boundaries for giant electromechanical response

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Haijun Wu ◽  
Shoucong Ning ◽  
Moaz Waqar ◽  
Huajun Liu ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Temperature Stability ◽  
Epitaxial Films ◽  
Polarization Rotation ◽  
Phase Boundaries ◽  
Film Properties ◽  
New Strategy ◽  
The Matrix ◽  
Opposing Effects ◽  
Severe Deterioration

AbstractTraditional strategies for improving piezoelectric properties have focused on phase boundary engineering through complex chemical alloying and phase control. Although they have been successfully employed in bulk materials, they have not been effective in thin films due to the severe deterioration in epitaxy, which is critical to film properties. Contending with the opposing effects of alloying and epitaxy in thin films has been a long-standing issue. Herein we demonstrate a new strategy in alkali niobate epitaxial films, utilizing alkali vacancies without alloying to form nanopillars enclosed with out-of-phase boundaries that can give rise to a giant electromechanical response. Both atomically resolved polarization mapping and phase field simulations show that the boundaries are strained and charged, manifesting as head-head and tail-tail polarization bound charges. Such charged boundaries produce a giant local depolarization field, which facilitates a steady polarization rotation between the matrix and nanopillars. The local elastic strain and charge manipulation at out-of-phase boundaries, demonstrated here, can be used as an effective pathway to obtain large electromechanical response with good temperature stability in similar perovskite oxides.

Sign in / Sign up

Export Citation Format

Share Document