Dynamics of glass transition of bulk a-Se and Se clusters incorporated into zeolites

Matsuishi, Kiyoto; Nogi, K.; Ogura, H.; Onari, Seiichiro; Arai, Toshihiro

doi:10.1016/s0022-3093(98)00195-1

Cited by 10 publications

(9 citation statements)

References 15 publications

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“…These results are very close to the parameters reported in Table 1 obtained from our experimental data. Matsuishi et al [41] performed isothermal annealing experiments on a-Se at temperatures below T g followed by heating scan at different heating rates (q + = 1, 10 and 20 K min À1 ) and found by curve fitting the TNM parameters: b = 0.65 ± 0.03, Dh * /R = 41 ± 3 kK. These parameters are again very close to our results.…”

Section: Tablesupporting

confidence: 90%

Volume and enthalpy relaxation of a-Se in the glass transition region

Málek¹,

Svoboda²,

Pustková³

et al. 2009

Journal of Non-Crystalline Solids

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Section: Tablesupporting

confidence: 90%

Volume and enthalpy relaxation of a-Se in the glass transition region

Málek¹,

Svoboda²,

Pustková³

et al. 2009

Journal of Non-Crystalline Solids

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“…It was observed that the T g of Se shifts to higher temperature with decrease in Se thickness/ size in Se/ As 2 Se 3 multilayers and Se confined in zeolites. 25,26 Moreover the experiments on holographic recording in Se/ As 2 S 3 samples also suggest the glass transition temperature shifts to higher temperatures. 27 The observation of photodarkening in our multilayered film at room temperature provides an indirect proof of the shift of T g to higher temperature under confined conditions.…”

Section: Discussionmentioning

confidence: 92%

Kinetics and chemical analysis of photoinduced interdiffusion in nanolayered Se/As2S3 films

Adarsh

Naik

Sangunni

et al. 2008

Journal of Applied Physics

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We have studied the kinetics of photoinduced effects in nanolayered Se/ As 2 S 3 film by in situ optical absorption measurements, which reveal that photodarkening in these films is followed by photoinduced diffusion. An increase in disorder during photodarkening and its subsequent decrease during photoinduced diffusion were also observed. The observation of photodarkening of Se at room temperature when confined between As 2 S 3 layers suggests that the glass transition temperature of Se shifts to higher energy. The analysis shows that the atoms which take part in photodarkening play a vital role in photoinduced diffusion. The x-ray photoelectron spectroscopy measurements show the atomic movements during photoinduced diffusion. It also shows that some of the As-S bonds are converted into As-Se bonds. Since it is energetically difficult to break an As-S bond to form an As-Se bond, we assume that the new bond formations are taking place by the bond rearrangement mechanism.

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“…The determined parameters are very close to those evaluated from our experimental data. Matsuishi et al [12] performed experiments on a-Se applying isothermal annealing at temperature bellow T g followed by heating step at different heating rates (q + ¼ 1, 10 and 20 K min À1 ). Matsuishi fitted the data using Eqs.…”

Section: Resultsmentioning

confidence: 99%

“…Enthalpy relaxation of a-Se using differential scanning calorimeter (DSC) was studied in a number of publications [10][11][12]. First aim of this paper was to study enthalpy relaxation of a-Se and describe the relaxation behavior using TNM model.…”

Section: Introductionmentioning

confidence: 99%