Characteristics of Pt/PbZr0.52Ti0.48O3/Pt and Au/PbZr0.52Ti0.48O3/YBa2Cu3O7-δ capacitors after γ-ray irradiation
Creators
- 1. State Key Lab. of Functional Materials for Informatics, Shanghai Inst. of Metallurgy, the Chinese Academy of Sciences, Shanghai, SH (China)
- 2. Academia Sinica, Shanghai, SH (China). Shanghai Inst. of Nuclear Research
Description
PbZr0.52Ti0.48O3 (PZT) and YBa2Cu3O7-δ (YBCO) thin films were fabricated by a pulsed laser deposition (PLD) method. The Pt/PZT/Pt ferroelectric capacitors were fabricated on silicon substrates while the Au/PZT/YBCO capacitors were fabricated on LaAlO3 substrates. The capacitance-voltage (C-V) properties and the hysteresis loops of the capacitors were measured before and after γ-ray irradiation. The results show that for Pt/PZT/Pt capacitors, the remanent polarization Pr and the absolute coercive field EC increase while the dielectric constant ε decrease with increasing accumulated dose. For the Au/PZT/YBCO capacitors, Pr and ε decreased with accumulated dose, but the absolute value of the negative and positive coercive fields increased. The results have been interpreted by radiation-induced positive charge trapping at defects in the ferroelectric materials. (orig.)
Additional details
Publishing Information
- Journal Title
- EPJ. Applied Physics
- Journal Volume
- 8
- Journal Issue
- 2
- Journal Page Range
- p. 105-109
- ISSN
- 1286-0042
- CODEN
- EPAPFV
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 31006473
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM COMPOUNDS; GAMMA RADIATION; GOLD; HIGH-TC SUPERCONDUCTORS; HYSTERESIS; LEAD COMPOUNDS; PERMITTIVITY; PLATINUM; POLARIZATION; RADIATION EFFECTS; SUPERCONDUCTING FILMS; THIN FILMS; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ELEMENTS; FILMS; IONIZING RADIATIONS; METALS; PHYSICAL PROPERTIES; PLATINUM METALS; RADIATIONS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS
Optional Information
- Notes
- 24 refs.