Pyroelectricity in thin ferroelectric films
Abstract
The pyroelectric properties of high-frequency-sprayed thin films of barium-strontium niobate are investigated using thermal pulse, low-frequency sinusoidal temperature modulation, and charge integration methods. The presence of a counter domain structure is demonstrated, and it is shown that nucleation during polarization reversal occurs near the positive electrode. It is further shown that the memory effect observed in structures consisting of a semiconductor, a barium strontium niobate film, and a metal is due to polarization direction switching. The value of the pyroelectric coefficient of the films studied is close to that of the coefficient for barium-strontium niobate crystals. Possible applications of the pyroelectric films are discussed.
- Publication:
-
Avtometriia
- Pub Date:
- April 1986
- Bibcode:
- 1986Avtme.......30A
- Keywords:
-
- Ferroelectricity;
- Niobates;
- Pyroelectricity;
- Thin Films;
- Barium Compounds;
- Domains;
- Memory (Computers);
- Microelectronics;
- Polarization (Charge Separation);
- Semiconductor Devices;
- Sputtering;
- Strontium Compounds;
- Thermal Analysis;
- Solid-State Physics