Studium amorfního a polykrystalického selenu pomocí dilatometrie a positronové anihilační spektroskopie.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F05%3A00002627" target="_blank" >RIV/00216275:25310/05:00002627 - 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

Dilatometric and positron anihilation lifetime spectroscopic studies on amorphous and polycrystalline selenium.

Popis výsledku v původním jazyce

Macroscopic expansion and microscopic positron annihilation behaviours on the three samples of selenium (Se): amorphous (a-Se), crystalline (c-Se) and partially crystalline (pc-Se) forms have been investigated over wide temperature ranges simultaneouslyby means of length dilatometry or positron annihilation lifetime spectroscopy, respectively. Dilatometric and PALS responses on the a-Se and pc-Se samples exhibit similar courses characterized by the presence of more or less pronounced bend effects at the characteristic transition temperatures Tg (a-Se) and Tx (pc-Se) in contrast to crystalline form without any bend effect. The positron lifetimes for a-Se are systematically lower than those for pc-Se. PALS experiments show that the annihilation of positron is sensitive to glass transition. The thermal expansion coefficients of the macroscopic length and approximately, of the macroscopic volume and that of the positron lifetime in both a-Se and pc-Se have been determined and compared. In

Název v anglickém jazyce

Dilatometric and positron anihilation lifetime spectroscopic studies on amorphous and polycrystalline selenium.

Popis výsledku anglicky

Macroscopic expansion and microscopic positron annihilation behaviours on the three samples of selenium (Se): amorphous (a-Se), crystalline (c-Se) and partially crystalline (pc-Se) forms have been investigated over wide temperature ranges simultaneouslyby means of length dilatometry or positron annihilation lifetime spectroscopy, respectively. Dilatometric and PALS responses on the a-Se and pc-Se samples exhibit similar courses characterized by the presence of more or less pronounced bend effects at the characteristic transition temperatures Tg (a-Se) and Tx (pc-Se) in contrast to crystalline form without any bend effect. The positron lifetimes for a-Se are systematically lower than those for pc-Se. PALS experiments show that the annihilation of positron is sensitive to glass transition. The thermal expansion coefficients of the macroscopic length and approximately, of the macroscopic volume and that of the positron lifetime in both a-Se and pc-Se have been determined and compared. In

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F01%2F0030" target="_blank" >GA104/01/0030: Strukturní relaxace amorfních materiálů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

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

Název periodika

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

351

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

1082

Strana od-do

1082-1088

Kód UT WoS článku

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EID výsledku v databázi Scopus

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