Elastic and viscoelastic properties of amorphous selenium and identification of the phase transition between ring and chain structures

R. Böhmer, Charles Angell

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Using a broadband mechanical spectrometer, the tensile modulus and stress relaxation of amorphous selenium were studied in the glass transformation range. Bimodal spectra were recorded under isothermal conditions in the time range 10-1 s<t<105 s. It was found that the structural equilibrations of the two contributions to the stress decay proceed independent of one another. The mechanical correlation functions of stabilized supercooled liquid Se can be described using a weighted sum of two stretched exponentials. The temperature dependences of the relative relaxation strengths are compared with results from a rotational isomeric state model. Our results are consistent with the existence of a cooperative transition, near 300 K, between ringlike and chain elements in the disordered chain model of Misawa and Suzuki. This transition has been kinetically inaccessible to previous measurements.

Original languageEnglish (US)
Pages (from-to)5857-5864
Number of pages8
JournalPhysical Review B
Volume48
Issue number9
DOIs
StatePublished - 1993

Fingerprint

ring structures
Selenium
selenium
elastic properties
Phase transitions
stress relaxation
rotational states
Stress relaxation
Tensile stress
Spectrometers
Elastic moduli
spectrometers
broadband
Glass
temperature dependence
glass
Liquids
decay
liquids
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

@article{3e1786575d374a70b38efc35ca732c83,
title = "Elastic and viscoelastic properties of amorphous selenium and identification of the phase transition between ring and chain structures",
abstract = "Using a broadband mechanical spectrometer, the tensile modulus and stress relaxation of amorphous selenium were studied in the glass transformation range. Bimodal spectra were recorded under isothermal conditions in the time range 10-1 s",
author = "R. B{\"o}hmer and Charles Angell",
year = "1993",
doi = "10.1103/PhysRevB.48.5857",
language = "English (US)",
volume = "48",
pages = "5857--5864",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Elastic and viscoelastic properties of amorphous selenium and identification of the phase transition between ring and chain structures

AU - Böhmer, R.

AU - Angell, Charles

PY - 1993

Y1 - 1993

N2 - Using a broadband mechanical spectrometer, the tensile modulus and stress relaxation of amorphous selenium were studied in the glass transformation range. Bimodal spectra were recorded under isothermal conditions in the time range 10-1 s

AB - Using a broadband mechanical spectrometer, the tensile modulus and stress relaxation of amorphous selenium were studied in the glass transformation range. Bimodal spectra were recorded under isothermal conditions in the time range 10-1 s

UR - http://www.scopus.com/inward/record.url?scp=0001041973&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001041973&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.48.5857

DO - 10.1103/PhysRevB.48.5857

M3 - Article

VL - 48

SP - 5857

EP - 5864

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 9

ER -