Potassium–sodium niobate lead-free piezoelectric materials: past, present, and future of phase boundaries

J Wu, D ** eco-friendly high-performance piezoceramics without lead has become one of
the most advanced frontiers in interdisciplinary research. Although potassium sodium …

Superior piezoelectric properties in potassium–sodium niobate lead‐free ceramics

K Xu, J Li, X Lv, J Wu, X Zhang, D **ao… - Advanced …, 2016 - Wiley Online Library
DOI: 10.1002/adma. 201601859 d33 of> 400 pC N− 1 by the modification of the
rhombohedral–tetragonal (R–T) phase boundary and domain structures.[8, 9] Rödel and Jo …

Nano-domains in lead-free piezoceramics: a review

X Lv, X Zhang, J Wu - Journal of Materials Chemistry A, 2020 - pubs.rsc.org
Reducing or even prohibiting the use of toxic lead in electronic devices has become one of
the most cutting-edge topics in various disciplines. The recently proposed phase boundary …

Giant piezoelectricity and high Curie temperature in nanostructured alkali niobate lead-free piezoceramics through phase coexistence

B Wu, H Wu, J Wu, D **ao, J Zhu… - Journal of the American …, 2016 - ACS Publications
Because of growing environmental concerns, the development of lead-free piezoelectric
materials with enhanced properties has become of great interest. Here, we report a giant …

Phase transitions and the piezoelectricity around morphotropic phase boundary in Ba (Zr0. 2Ti0. 8) O3-x (Ba0. 7Ca0. 3) TiO3 lead-free solid solution

L Zhang, M Zhang, L Wang, C Zhou, Z Zhang… - Applied Physics …, 2014 - pubs.aip.org
In this paper, two displacive phase transitions around the morphotropic phase boundary
(MPB) in Ba (Zr 0.2 Ti 0.8) O 3-x (Ba 0.7 Ca 0.3) TiO 3 (BZT-xBCT) ceramics were detected …

Microstructure basis for strong piezoelectricity in Pb-free Ba (Zr0. 2Ti0. 8) O3-(Ba0. 7Ca0. 3) TiO3 ceramics

J Gao, D Xue, Y Wang, D Wang, L Zhang, H Wu… - Applied Physics …, 2011 - pubs.aip.org
In this letter, we use transmission electron microscopy to study the microstructure feature of
recently reported Pb-free piezoceramic Ba (Zr 0.2 Ti 0.8) O 3-x (Ba 0.7 Ca 0.3) TiO 3 across …

Coherent terahertz emission of intrinsic Josephson junction stacks in the hot spot regime

HB Wang, S Guénon, B Gross, J Yuan, ZG Jiang… - Physical review …, 2010 - APS
We report on THz emission measurements and low temperature scanning laser imaging of
Bi 2 Sr 2 CaCu 2 O 8 intrinsic Josephson junction stacks. Coherent emission is observed at …

Microstructural origins of high piezoelectric performance: a pathway to practical lead‐free materials

H Wu, Y Zhang, J Wu, J Wang… - Advanced Functional …, 2019 - Wiley Online Library
Piezoelectric materials interconvert between electrical energy and mechanical strain and
are widely used for electronic and electromechanical devices. Owing to growing …

Designed morphotropic relaxor boundary ceramic exhibiting large electrostrain and negligible hysteresis

Y Yang, C Liu, Y Ji, L He, X Ren - Acta Materialia, 2021 - Elsevier
Electromechanical materials with large electrostrain and low hysteresis are strongly desired
for high-precision actuator applications. Despite extensive studies for more than half a …