Dielectric Properties of Selected Tungsten Compounds from 60 MHz to 9.44 GHz

J. Pfeifer, I. Csaba, K. Elek

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Crystalline powders of tungsten compounds ammonium paratungstate, ammonium metatungstate, tungsten trioxide hydrate (WO3 · H2O), and tungsten blue oxide have been studied. The complex permittivity of the pulverized materials has been measured at room temperature from 60 MHz to 9.44 GHz. Intrinsic permittivity values of the crystalline solids have been derived from the apparent dielectric data of the powder material. Heating rate plots of powder samples of about 30 g at 2.45 GHz and 850 W radiation have also been taken. The slopes of the heating rate plots and the estimated dielectric loss factors of the crystalline solids are correlated. The experimentally observed microwave heating behavior and decomposition properties under microwave irradiation have been explained.

Original languageEnglish
Pages (from-to)349-356
Number of pages8
JournalJournal of Solid State Chemistry
Volume111
Issue number2
DOIs
Publication statusPublished - Aug 1994

Fingerprint

Tungsten Compounds
Tungsten compounds
tungsten compounds
Dielectric properties
Powders
dielectric properties
Crystalline materials
Heating rate
heating
Tungsten
tungsten
Permittivity
plots
permittivity
microwaves
Microwave heating
Microwave irradiation
Dielectric losses
Hydrates
Ammonium Compounds

ASJC Scopus subject areas

  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Dielectric Properties of Selected Tungsten Compounds from 60 MHz to 9.44 GHz. / Pfeifer, J.; Csaba, I.; Elek, K.

In: Journal of Solid State Chemistry, Vol. 111, No. 2, 08.1994, p. 349-356.

Research output: Contribution to journalArticle

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