Conducting Sr0.7NbO3 thin film electrodes for ferroelectric capacitors
Creators
- 1. Condensed Matter Physics and Materials Science Research Division, School of Mathematics and Physics, The Queens University of Belfast, Belfast BT7 1NN (United Kingdom)
Description
We report the synthesis of thin films of the conducting cubic oxide Sr0.7NbO3 by pulsed laser deposition. Deposition conditions were investigated and optimized to yield both conductivity and crystallinity. Unlike most similar materials we find that successful synthesis of conducting Sr0.7NbO3 is very sensitive to oxygen pressure during deposition. Optimal properties were obtained for vacuum deposition at a substrate temperature of 750 degree C. Typical resistivity was 800 μΩcm at 300 K and independent of temperature down to 10 K. Films grew epitaxially onto {100} MgO. Functionality of the material was demonstrated by preparing MgO/Sr0.7NbO3/BaTiO3/Au capacitors. Despite their apparently excellent lattice match, these capacitors exhibited depressed Curie temperatures. copyright 1997 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 70
- Journal Issue
- 19
- Journal Page Range
- p. 2622-2624.
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28072485
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CAPACITORS; DEPOSITION; ELECTRIC CONDUCTIVITY; ELECTRODES; FERROELECTRIC MATERIALS; LASER RADIATION; NIOBATES; STRONTIUM COMPOUNDS; THIN FILMS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; DIELECTRIC MATERIALS; ELECTRICAL EQUIPMENT; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ENERGY STORAGE SYSTEMS; EQUIPMENT; FILMS; MATERIALS; NIOBIUM COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; TRANSITION ELEMENT COMPOUNDS