THERMOLUMINESCENCE OF NOMINALLY PURE KTaO3 CRYSTALS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F02%3A04085232" target="_blank" >RIV/68407700:21340/02:04085232 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/02:00100237

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

THERMOLUMINESCENCE OF NOMINALLY PURE KTaO3 CRYSTALS

Popis výsledku v původním jazyce

After an exposure to ultraviolet light at 12 K, weak thermoluminescence of nominally pure KTaO3 crystals was observed within the temperature region from 13 to 65 K for the first time. An analysis of the glow curves of integral thermoluminescence revealedfive glow peaks with markedly sample-dependent intensities. Three glow peaks near 26, 31, and 58 K at the heating rate of 0.155 K/s correspond to thermoluminescence spectrally very similar to broad-band visible photoluminescence. The glow peaks near 26 and 31 K were assigned to the electron release from photoinduced Ta4+-OH- and Ta4+-VO centers and the glow peak near 58 K to the hole release from photoinduced O- centers. The glow peaks near 34 and 41 K are connected with the structureless emission bandpeaking near 714 nm at 15 K that was observed in the emission spectra of KTaO3 crystals for the first time.

Název v anglickém jazyce

THERMOLUMINESCENCE OF NOMINALLY PURE KTaO3 CRYSTALS

Popis výsledku anglicky

After an exposure to ultraviolet light at 12 K, weak thermoluminescence of nominally pure KTaO3 crystals was observed within the temperature region from 13 to 65 K for the first time. An analysis of the glow curves of integral thermoluminescence revealedfive glow peaks with markedly sample-dependent intensities. Three glow peaks near 26, 31, and 58 K at the heating rate of 0.155 K/s correspond to thermoluminescence spectrally very similar to broad-band visible photoluminescence. The glow peaks near 26 and 31 K were assigned to the electron release from photoinduced Ta4+-OH- and Ta4+-VO centers and the glow peak near 58 K to the hole release from photoinduced O- centers. The glow peaks near 34 and 41 K are connected with the structureless emission bandpeaking near 714 nm at 15 K that was observed in the emission spectra of KTaO3 crystals for the first time.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA202%2F00%2F1425" target="_blank" >GA202/00/1425: Spektroskopie a nové jevy ve vícenásobně dopovaných materiálech skupiny perovskitů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

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

Název periodika

Radiation Effects and Defects in Solids

ISSN

1042-0150

e-ISSN

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Svazek periodika

157

Číslo periodika v rámci svazku

6-12

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

1021-1024

Kód UT WoS článku

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EID výsledku v databázi Scopus

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