High-frequency dielectric properties of K1-xLixTaO3 ceramics compared to crystals

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00573146" target="_blank" >RIV/68378271:_____/23:00573146 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/23:00367009
Result on the web
<a href="https://doi.org/10.1016/j.jeurceramsoc.2023.04.037" target="_blank" >https://doi.org/10.1016/j.jeurceramsoc.2023.04.037</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2023.04.037" target="_blank" >10.1016/j.jeurceramsoc.2023.04.037</a>

Result language
angličtina
Original language name
High-frequency dielectric properties of K1-xLixTaO3 ceramics compared to crystals
Original language description
Second harmonic generation (SHG) and high-frequency dielectric properties of Li-doped KTaO3 (K1-xLixTaO3, KLT100x) ceramics, KLT5 and KLT10, are studied in the 15-300 K temperature range. Using the resonant microwave spectroscopy at 5.8 GHz, time-domain THz spectroscopy and far-infrared reflectivity in conjunction with the dielectric properties earlier published in the 100 Hz – 100 MHz frequency range, a broad-band dielectric response of ceramics is obtained and compared with that recently published for KLT4.3 and KLT8 crystals. According to SHG, unlike in crystals, the ferroelectric phase transition temperature in both ceramics appears near 100 K. The dielectric soft mode softening is less pronounced, and the low-frequency permittivity increases less on cooling, when compared with crystals. The relaxational behavior below the microwave range is very similar and the main relaxations follow the same Arrhenius law as in the crystals.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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