| Attributes | Values |
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| rdf:type
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| Description
| - Vzorky amorfního (a-Se), krystalického (c-Se) a částečně zakrystalovaného (pc-Se) selenu byly zkoumány v širokém teplotním rozmezí simultánně metodami délkové dilatometrie a pozitronové anihilační spektroskopie. Dilatometrická i PALS měření a-Se a pc-Se vzorků na rozdíl od c-Se vykazují stejné charakteristické zakřivení při charakteristických teplotách přechodů Tg (a-Se) and Tx (pc-Se). Doba života positronů je pro a-Se nižší než v případě pc-Se. PALS experimenty ukazují že anihilace positronů je citlivá na skelný přechod. Byly určeny a porovnány teplotní koeficienty délkové, potažmo objemové roztažnosti s výsledky získanými pozitronovou anihilací pro vzorky a-Se a pc-Se. Hodnoty koeficientů roztažnosti z PALS jsou pro a-Se dvakrát a pro pc-Se dokonce pětkrát vyšší než hodnoty získané dilatometricky a to pro oblast nad i pod Tx respektive Tg. Tyto výsledky vedou k závěrům jež zobrazují pc-Se jako neideální krystalickou matrici s neuspořádanými oblastmi mezi mikrokrystaly stejně jako v a-Se ale s odliš (cs)
- 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 simultaneously by 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 a-Se, the respe
- 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 simultaneously by 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 a-Se, the respe (en)
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| Title
| - Dilatometric and positron anihilation lifetime spectroscopic studies on amorphous and polycrystalline selenium.
- Studium amorfního a polykrystalického selenu pomocí dilatometrie a positronové anihilační spektroskopie. (cs)
- Dilatometric and positron anihilation lifetime spectroscopic studies on amorphous and polycrystalline selenium. (en)
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| skos:prefLabel
| - Dilatometric and positron anihilation lifetime spectroscopic studies on amorphous and polycrystalline selenium.
- Studium amorfního a polykrystalického selenu pomocí dilatometrie a positronové anihilační spektroskopie. (cs)
- Dilatometric and positron anihilation lifetime spectroscopic studies on amorphous and polycrystalline selenium. (en)
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| skos:notation
| - RIV/00216275:25310/05:00002627!RIV08-MSM-25310___
|
| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA104/01/0030), Z(MSM0021627501)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00216275:25310/05:00002627
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Free-volume; selenium; PALS; dilatometry (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Journal of Non-Crystalline Solids
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Málek, Jiří
- Shánělová, Jana
- Bartoš, J.
- Pustková, Pavla
- Krištiak, J.
- Šauša, O.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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| is http://linked.open...avai/riv/vysledek
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