Author： SNM V. ŽELEZN
Publisher： Taylor & Francis Ltd
ISSN： 0015-0193
Source： Ferroelectrics, Vol.302, Iss.1, 2004-01, pp. : 195-197
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
The infrared and terahertz spectra of lithium doped KTaO3 have been studied for the first time and compared with low-frequency dielectric measurements. The frequency of the soft mode decreases on cooling and follows the tendency found by previous hyper-Raman measurements. In Li-doped crystals the mode softening is not so pronounced and therefore, the mode contribution to static dielectric constant is lower. In addition to that a typical relaxor behavior is observed in dielectric spectroscopy (102–109 Hz). The rise of the reflectivity and dielectric loss is observed below 10 cm−1, which indicates presence of a central peak.
Related content
Dielectric Permittivity Study of KTaO3 Weakly Doped by 6Li Isotope
By TREPAKOV V.
Ferroelectrics, Vol. 302, Iss. 1, 2004-01 ,pp. :
Access to resources
Recommend
Optical Properties of Li Doped KTaO3 Using Spectroscopic Ellipsometer
Ferroelectrics, Vol. 355, Iss. 1, 2007-01 ,pp. :
Access to resources