TU Darmstadt / ULB / TUbiblio

Polarization Rotation at Morphotropic Phase Boundary in New Lead-Free Na1/2Bi1/2V1−xTixO3 Piezoceramics

Pan, Zhao ; Zhang, Mao-Hua ; Nishikubo, Takumi ; Sakai, Yuki ; Yamamoto, Hajime ; Hojo, Hajime ; Fukuda, Masayuki ; Hu, Lei ; Ishizaki, Hayato ; Kaneko, Satoru ; Kawaguchi, Shogo ; Koruza, Jurij ; Rödel, Jürgen ; Azuma, Masaki (2021):
Polarization Rotation at Morphotropic Phase Boundary in New Lead-Free Na1/2Bi1/2V1−xTixO3 Piezoceramics.
In: ACS Applied Materials & Interfaces, 13 (4), pp. 5208-5215. ACS Publications, ISSN 1944-8244,
DOI: 10.1021/acsami.0c18482,
[Article]

Abstract

In this work, we show that polarization rotation enhances the piezoresponse in a high-performance lead-free piezoelectric material, Na1/2Bi1/2V1−xTixO3, a solid solution between tetragonal Na1/2Bi1/2VO3 and rhombohedral Na1/2Bi1/2TiO3, obtained by high-pressure synthesis. The system forms a pure perovskite structure with a favorable morphotropic phase boundary (MPB) located around x = 0.90, which separates the tetragonal and rhombohedral phases. In addition, a distinct monoclinic phase with polarization rotation as functions of composition and temperature is observed. XRD measurements revealed the moderately high Curie temperature of 523 K at x = 0.95 in the MPB. The piezoelectric coefficient d33 of the monoclinic x = 0.95 sample, 42 pC/N, is higher than those of the tetragonal and rhombohedral phases. Even though the present lead-free Na1/2Bi1/2V1−xTixO3 ceramics feature smaller d33 values compared to many currently available lead-free piezoelectric materials as a result of insufficient poling and low density, we expect our findings open up opportunities for exploring promising lead-free piezoelectric materials in Na1/2Bi1/2VO3-based perovskites.

Item Type: Article
Erschienen: 2021
Creators: Pan, Zhao ; Zhang, Mao-Hua ; Nishikubo, Takumi ; Sakai, Yuki ; Yamamoto, Hajime ; Hojo, Hajime ; Fukuda, Masayuki ; Hu, Lei ; Ishizaki, Hayato ; Kaneko, Satoru ; Kawaguchi, Shogo ; Koruza, Jurij ; Rödel, Jürgen ; Azuma, Masaki
Title: Polarization Rotation at Morphotropic Phase Boundary in New Lead-Free Na1/2Bi1/2V1−xTixO3 Piezoceramics
Language: English
Abstract:

In this work, we show that polarization rotation enhances the piezoresponse in a high-performance lead-free piezoelectric material, Na1/2Bi1/2V1−xTixO3, a solid solution between tetragonal Na1/2Bi1/2VO3 and rhombohedral Na1/2Bi1/2TiO3, obtained by high-pressure synthesis. The system forms a pure perovskite structure with a favorable morphotropic phase boundary (MPB) located around x = 0.90, which separates the tetragonal and rhombohedral phases. In addition, a distinct monoclinic phase with polarization rotation as functions of composition and temperature is observed. XRD measurements revealed the moderately high Curie temperature of 523 K at x = 0.95 in the MPB. The piezoelectric coefficient d33 of the monoclinic x = 0.95 sample, 42 pC/N, is higher than those of the tetragonal and rhombohedral phases. Even though the present lead-free Na1/2Bi1/2V1−xTixO3 ceramics feature smaller d33 values compared to many currently available lead-free piezoelectric materials as a result of insufficient poling and low density, we expect our findings open up opportunities for exploring promising lead-free piezoelectric materials in Na1/2Bi1/2VO3-based perovskites.

Journal or Publication Title: ACS Applied Materials & Interfaces
Journal volume: 13
Number: 4
Publisher: ACS Publications
Uncontrolled Keywords: Lead-free, perovskite, polarization rotation, piezoelectric, ferroelectricity
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
LOEWE
LOEWE > LOEWE-Schwerpunkte
LOEWE > LOEWE-Schwerpunkte > FLAME - Fermi Level Engineering Antiferroelektrischer Materialien für Energiespeicher und Isolatoren
Date Deposited: 18 Feb 2021 07:35
DOI: 10.1021/acsami.0c18482
Official URL: https://pubs.acs.org/doi/10.1021/acsami.0c18482
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details