| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9812447 | Thin Solid Films | 2005 | 5 Pages |
Abstract
Electrical and polarization hysteresis measurements on Pt-BaTiO3-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.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
N. Ashkenov, M. Schubert, E. Twerdowski, H. v. Wenckstern, B.N. Mbenkum, H. Hochmuth, M. Lorenz, W. Grill, M. Grundmann,