Abstract
Electrical and polarization hysteresis measurements on Pt-BaTiO 3-ZnO-Pt heterostructures, grown by pulsed laser deposition on (001)Si, are reported. The layers were deposited without breaking the vacuum using a switchable target holder. Offsets of hysteresis loops along the polarization axis with increasing sweeping voltage, time-dependent charging, and rectifying behavior are observed. A simple electrical circuitry can be used to model the observed hysteresis behavior, where the interface between the wurtzite-structure ZnO and the pervoskite-structure BaTiO3 is seen as the origin of a space charge accumulation region. Coupling between spontaneous wurtzite and switchable ferroelectric polarization is discussed.
Original language | English (US) |
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Pages (from-to) | 153-157 |
Number of pages | 5 |
Journal | Thin Solid Films |
Volume | 486 |
Issue number | 1-2 |
DOIs | |
State | Published - Aug 22 2005 |
Externally published | Yes |
Keywords
- 112 Electrical properties and measurements
- 143 Ferroelectric properties
- 354 Oxides
- 430 Semiconductors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry