TANTALUM OXIDE DIELECTRICS PROCESSED WITH SPARK-PLASMA SINTERING

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F20%3A00341014" target="_blank" >RIV/68407700:21230/20:00341014 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.17222/mit.2019.074" target="_blank" >https://doi.org/10.17222/mit.2019.074</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2019.074" target="_blank" >10.17222/mit.2019.074</a>

Jazyk výsledku

angličtina

Název v původním jazyce

TANTALUM OXIDE DIELECTRICS PROCESSED WITH SPARK-PLASMA SINTERING

Popis výsledku v původním jazyce

Tantalum pentoxide (Ta 2 O 5 ) was sintered with spark-plasma sintering (SPS) using a commercial powder with micometric particles composed of nanometric crystallites. The influence of the SPS process and subsequent annealing on the microstructure, phase composition and dielectric properties was studied. After the sintering, the product was oxygen deficient because of the low pressure in the sintering chamber. Evacuation was necessary for the process because of the carbon pistons and carbon die used for the powder compaction. After the subsequent annealing in air, the white color of Ta2O5 was restored, being a proper indication of a re-oxidation. Dielectric properties were studied in a broad range of frequencies and temperatures. As-sintered and also annealed samples exhibited a high relative permittivity in a range of 61–68, a loss factor of about 0.001 and a resistivity in the order of 10E11 Ohm m.

Název v anglickém jazyce

TANTALUM OXIDE DIELECTRICS PROCESSED WITH SPARK-PLASMA SINTERING

Popis výsledku anglicky

Tantalum pentoxide (Ta 2 O 5 ) was sintered with spark-plasma sintering (SPS) using a commercial powder with micometric particles composed of nanometric crystallites. The influence of the SPS process and subsequent annealing on the microstructure, phase composition and dielectric properties was studied. After the sintering, the product was oxygen deficient because of the low pressure in the sintering chamber. Evacuation was necessary for the process because of the carbon pistons and carbon die used for the powder compaction. After the subsequent annealing in air, the white color of Ta2O5 was restored, being a proper indication of a re-oxidation. Dielectric properties were studied in a broad range of frequencies and temperatures. As-sintered and also annealed samples exhibited a high relative permittivity in a range of 61–68, a loss factor of about 0.001 and a resistivity in the order of 10E11 Ohm m.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Materials and Technology

ISSN

1580-2949

e-ISSN

1580-3414

Svazek periodika

54

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

6

Strana od-do

197-202

Kód UT WoS článku

000541971000006

EID výsledku v databázi Scopus

2-s2.0-85079077769