Thermoluminescence of Chromium Doped Cd2Nb2O7 Crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F03%3A04092682" target="_blank" >RIV/68407700:21340/03:04092682 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Thermoluminescence of Chromium Doped Cd2Nb2O7 Crystals

Popis výsledku v původním jazyce

The exposure of the Cd2Nb2O7:Cr crystal to monochromatic light with the wavelength shorter than 600 nm at 12 K decreases the Cr3+ photoluminescence emission and allows us to observe thermoluminescence within 60 - 200 K during subsequent heating of the crystal at a rate of 0.077 K/s. The glow curve of thermoluminescence revealed a rather complex structure with two pronounced intensive glow peaks at 91 and 180 K and four rather weak peaks at 99, 117, 132, and 155 K. An analysis of the glow peaks by "an initial rise" gave evidence of many various charge carrier traps with the activation energies from 150 to 470 meV. Since a comparison of the thermoluminescence and photoluminescence emission spectra showed that these spectra are identical, it was concludedthat the thermoluminescence glow peaks are associated with thermal release of charge carriers from shallow traps followed by Cr4+ Ž Cr3+(2E) and/or Cr2+ Ž Cr3+(2E) charge capture and 2E Ž 4A2 radiative decay of Cr3+(2E) ions.

Název v anglickém jazyce

Thermoluminescence of Chromium Doped Cd2Nb2O7 Crystals

Popis výsledku anglicky

The exposure of the Cd2Nb2O7:Cr crystal to monochromatic light with the wavelength shorter than 600 nm at 12 K decreases the Cr3+ photoluminescence emission and allows us to observe thermoluminescence within 60 - 200 K during subsequent heating of the crystal at a rate of 0.077 K/s. The glow curve of thermoluminescence revealed a rather complex structure with two pronounced intensive glow peaks at 91 and 180 K and four rather weak peaks at 99, 117, 132, and 155 K. An analysis of the glow peaks by "an initial rise" gave evidence of many various charge carrier traps with the activation energies from 150 to 470 meV. Since a comparison of the thermoluminescence and photoluminescence emission spectra showed that these spectra are identical, it was concludedthat the thermoluminescence glow peaks are associated with thermal release of charge carriers from shallow traps followed by Cr4+ Ž Cr3+(2E) and/or Cr2+ Ž Cr3+(2E) charge capture and 2E Ž 4A2 radiative decay of Cr3+(2E) ions.

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

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

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

158

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

101-104

Kód UT WoS článku

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EID výsledku v databázi Scopus

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