Published November 13, 1978
| Version v1
Journal article
Extrinsic peak in the susceptibility of incipient ferroelectric KTaO3:Li
Creators
- 1. IBM Zurich Research Laboratory, 8803 Rueschlikon, Switzerland
Description
Dielectric-constant measurements on KTaO3:Li as a function of Li concentration, temperature, and frequency reveal the presence of a peak in the susceptibility near the paraelectric anomaly at 0 K. This effect is attributed to Li impurities which are ''frozen'' in an off-center position at the potassium site. For samples with a Li concentration of less than 24%, continuity of the elastic compliance ensures that a lattice polarization does not occur as for a true ferroelectric. Our results support the mean-field approach to the dynamics of impurities in ferroelectric hosts
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 41
- Journal Issue
- 20
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 1410-1413
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 10448140
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- DIELECTRIC PROPERTIES; FERROELECTRIC MATERIALS; FLUCTUATIONS; IMPURITIES; LITHIUM; POLARIZATION; POTASSIUM COMPOUNDS; TANTALUM COMPOUNDS
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALI METALS; DIELECTRIC MATERIALS; ELECTRICAL PROPERTIES; ELEMENTS; METALS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS; VARIATIONS