Intrinsic anomalous ferroelectricity in vertically aligned LiNbO3-type ZnSnO3 hybrid nanoparticle-nanowire arrays
Abstract
An intrinsically constricted ferroelectric (FE) hysteresis behavior with a high remanent polarization of ≈26 μC/cm2 is reported from LiNbO3-type (LN-type) ZnSnO3 hybrid nanoparticle-nanowire (NP-NW) arrayed film. Vertically aligned and densely packed LN-type ZnSnO3 hybrid NP-NW arrays are synthesized using ZnO:Al seed-layer assisted process by a physical/chemical combined methodology. Post-annealing treatments and repeated poling measurements reinstate that the constricted FE loop in LN-type ZnSnO3 is an inherent feature of the hybrid NP-NW structure. This is also exemplified by the noticeable increase in the degree of constriction with higher NP concentration in the sample. A close fit to the experimental data was obtained with the Preisach model of FE hysteresis confirming a unique charge-ordering mechanism which was ascribed to the interaction of the NPs with each other and the surrounding FE ZnSnO3 NWs. The work provides a comprehensible understanding of the microstructure-property relationships in emerging Pb-free, LN-type ZnSnO3 FE material.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 24, 2014
- Source ID
- 10.1063/1.4902557
Entities
People
- Anuja Datta
- Corisa Kons
- Devajyoti Mukherjee
- Mahesh Hordagoda
- Pritish Mukherjee
- Sarath Witanachchi
Organizations
- United States Department of Defense
- University of South Florida