Dielectric Response of Asymmetric KNbO3/KTaO3 Superlattices
Journal Article
·
· Journal of Vacuum Science & Technology A
- University of Florida, Gainesville
- University of Florida
- ORNL
The synthesis and properties of asymmetric KNbO{sub 3}KTaO{sub 3} superlattices is examined. Interdigitated electrodes are fabricated for temperature-dependent capacitance measurements. The nonlinear dielectric response of 1/N superlattice exhibits the anomalous positive tunability behavior indicative of antiferroelectricity. In contrast, the N/1 KNbO{sub 3}/KTaO{sub 3} structures (N > 1) appear to be either ferroelectric or paraelectric, depending on the temperature. Discussion of possible mechanisms for this behavior is given.
- Research Organization:
- Oak Ridge National Laboratory (ORNL)
- Sponsoring Organization:
- SC USDOE - Office of Science (SC)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1003433
- Journal Information:
- Journal of Vacuum Science & Technology A, Journal Name: Journal of Vacuum Science & Technology A Journal Issue: 5 Vol. 22; ISSN 0734-2101
- Country of Publication:
- United States
- Language:
- English
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