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Deciphering the phase transition-induced ultrahigh piezoresponse in (K,Na)NbO$_{3}$-based piezoceramics

Zhang, Mao-Hua; Shen, Chen; Zhao, Changhao; Dai, Mian; Yao, Fang-Zhou; Wu, Bo ; Ma, Jian; Nan, Hu; Wang, Dawei; Yuan, Qibin; da Silva, Lucas Lemos 1; Fulanović, Lovro; Schökel, Alexander; Liu, Peitao; Zhang, Hongbin; Li, Jing-Feng; Zhang, Nan ; Wang, Ke ; Rödel, Jürgen; ... mehr

Abstract:

Here, we introduce phase change mechanisms in lead-free piezoceramics as a strategy to utilize attendant volume change for harvesting large electrostrain. In the newly developed (K,Na)NbO$_{3}$ solid-solution at the polymorphic phase boundary we combine atomic mapping of the local polar vector with in situ synchrotron X-ray diffraction and density functional theory to uncover the phase change and interpret its underlying nature. We demonstrate that an electric field-induced phase transition between orthorhombic and tetragonal phases triggers a dramatic volume change and contributes to a huge effective piezoelectric coefficient of 1250 pm V$^{-1}$ along specific crystallographic directions. The existence of the phase transition is validated by a significant volume change evidenced by the simultaneous recording of macroscopic longitudinal and transverse strain. The principle of using phase transition to promote electrostrain provides broader design flexibility in the development of high-performance piezoelectric materials and opens the door for the discovery of high-performance future functional oxides.


Verlagsausgabe §
DOI: 10.5445/IR/1000149353
Veröffentlicht am 02.08.2022
Originalveröffentlichung
DOI: 10.1038/s41467-022-31158-x
Scopus
Zitationen: 63
Web of Science
Zitationen: 49
Dimensions
Zitationen: 63
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Keramische Werkstoffe und Technologien (IAM-KWT1)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2022
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000149353
Erschienen in Nature Communications
Verlag Nature Research
Band 13
Heft 1
Seiten Art.Nr. 3434
Vorab online veröffentlicht am 15.06.2022
Nachgewiesen in Dimensions
Scopus
Web of Science
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