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Electric field-induced volume change in pyro-vanadate-phosphates: Toward an alternative actuator architecture.
- Source :
- Applied Physics Letters; 7/22/2024, Vol. 125 Issue 4, p1-6, 6p
- Publication Year :
- 2024
-
Abstract
- We discovered large electric-field-induced strain in pyro-vanadate-phosphate Cu<subscript>2−</subscript><subscript>x</subscript>Zn<subscript>x</subscript>V<subscript>1.8</subscript>P<subscript>0.2</subscript>O<subscript>7</subscript>. Distinct from conventionally used piezoelectric materials including lead-zirconate-titanate, this material expands almost isotropically at room temperature when an electric field is applied. This volume change, exceeding 1000 ppm under the field of E = 3900 V/cm, is of the largest class induced by an electric field. The strain is phenomenologically interpreted as electrostriction because it is symmetric about E = 0 and because it obeys a higher term than E-linear such as E squared. The present x-ray diffraction experiments suggest that the applied electric field distorts the crystal lattice, although there is no structural phase transition. This material performs a volume-change-driven actuator function that is distinct from the strain-driven counterpart of piezoelectric materials. The discovery of actuator functionality in a material system with a non-perovskite structure, unlike the actuator materials developed to date, is a major breakthrough for future actuator engineering. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 125
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 178653879
- Full Text :
- https://doi.org/10.1063/5.0219429