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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68407700:21340/23:00367009

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

1873-619X

Svazek periodika

43

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

5241-5247

Kód UT WoS článku

001012582700001

EID výsledku v databázi Scopus

2-s2.0-85156174823