DIELECTRIC BEHAVIOR OF MgO

LI** plus CRYSTALS.

M. Puma, A. Lőrincz, J. F. Andrews, J. H. Crawford

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Measurements of the dielectric constant in crystals of MgO doped with Li** plus ions have been carried out after quenching from anneals at 1300 degree C in static air. Prior to heat treatment, the crystals exhibited no discernible dielectric loss, but afterwards, the loss tangent exceeded 0. 4. For 10-min anneals, the dielectric relaxation is very close to a Debye process, and the temperature dependence of the maximum of the loss peak corresponds to an activation energy of 0. 724 ev. When plotted in the form of a Cole-Cole arc, the data indicate that deviation from a Debye relaxation amounts to a distribution of relaxation time no greater than that which can be accounted for with a distribution of activation energies of only 0. 007 ev. For longer heating times, overlapping relaxation processes appear. The lack of broadening of the loss peak, and the magnitude of the relaxation time, yield clues as to possible loss mechanisms.

Original languageEnglish
Pages (from-to)4546-4548
Number of pages3
JournalJournal of Applied Physics
Volume53
Issue number6
DOIs
Publication statusPublished - Jun 1982

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relaxation time
activation energy
tangents
dielectric loss
crystals
heat treatment
arcs
quenching
permittivity
deviation
temperature dependence
heating
air
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

DIELECTRIC BEHAVIOR OF MgO : LI** plus CRYSTALS. / Puma, M.; Lőrincz, A.; Andrews, J. F.; Crawford, J. H.

In: Journal of Applied Physics, Vol. 53, No. 6, 06.1982, p. 4546-4548.

Research output: Contribution to journalArticle

Puma, M, Lőrincz, A, Andrews, JF & Crawford, JH 1982, 'DIELECTRIC BEHAVIOR OF MgO: LI** plus CRYSTALS.', Journal of Applied Physics, vol. 53, no. 6, pp. 4546-4548. https://doi.org/10.1063/1.331202
Puma, M. ; Lőrincz, A. ; Andrews, J. F. ; Crawford, J. H. / DIELECTRIC BEHAVIOR OF MgO : LI** plus CRYSTALS. In: Journal of Applied Physics. 1982 ; Vol. 53, No. 6. pp. 4546-4548.
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