Publication detail

Dielectric relaxation in Glycerol at long-time exposure to low temperatures

HOLCMAN, V. STRÁNÍK, R.

Original Title

Dielectric relaxation in Glycerol at long-time exposure to low temperatures

English Title

Dielectric relaxation in Glycerol at long-time exposure to low temperatures

Type

conference paper

Language

en

Original Abstract

This paper deals with the dielectric relaxation in glycerol at different temperatures (down to 25 K) for protracted periods of time. Two relaxation maxima were observed. The peak at lower frequencies was ascribed to the relaxation alpha-process of glycerol proper; the peak at higher frequencies differed in samples from different manufacturers, so that it represents rather a relaxation peak associated with contaminants and not the true alpha-process in glycerol. The alpha-process was considerably masked by the conductivity component. During a long-time exposure of glycerol to a low constant temperature, the relaxation spectrum sifts with increasing time to lower frequencies, reaching a steady position after about 20 hours.

English abstract

This paper deals with the dielectric relaxation in glycerol at different temperatures (down to 25 K) for protracted periods of time. Two relaxation maxima were observed. The peak at lower frequencies was ascribed to the relaxation alpha-process of glycerol proper; the peak at higher frequencies differed in samples from different manufacturers, so that it represents rather a relaxation peak associated with contaminants and not the true alpha-process in glycerol. The alpha-process was considerably masked by the conductivity component. During a long-time exposure of glycerol to a low constant temperature, the relaxation spectrum sifts with increasing time to lower frequencies, reaching a steady position after about 20 hours.

Keywords

dielectric, glycerol, properties,

RIV year

2008

Released

07.05.2008

Publisher

31st International Spring Seminar on Electronics Technology

Location

Budapest

ISBN

978-963-06-4915-5

Book

ISSE 2008 31st International Spring Seminar on Electronics Technology

Edition

1

Edition number

1

Pages from

86

Pages to

90

Pages count

5

BibTex


@inproceedings{BUT26523,
  author="Vladimír {Holcman} and Rostislav {Stráník}",
  title="Dielectric relaxation in Glycerol at long-time exposure to low temperatures",
  annote="This paper deals with the dielectric relaxation in glycerol at different temperatures (down to 25 K) for protracted periods of time. Two relaxation maxima were observed. The peak at lower frequencies was ascribed to the relaxation alpha-process of glycerol proper; the peak at higher frequencies differed in samples from different manufacturers, so that it represents rather a relaxation peak associated with contaminants and not the true alpha-process in glycerol. The alpha-process was considerably masked by the conductivity component. During a long-time exposure of glycerol to a low constant temperature, the relaxation spectrum sifts with increasing time to lower frequencies, reaching a steady position after about 20 hours.",
  address="31st International Spring Seminar on Electronics Technology",
  booktitle="ISSE 2008 31st International Spring Seminar on Electronics Technology",
  chapter="26523",
  edition="1",
  howpublished="online",
  institution="31st International Spring Seminar on Electronics Technology",
  year="2008",
  month="may",
  pages="86--90",
  publisher="31st International Spring Seminar on Electronics Technology",
  type="conference paper"
}