Crystallization kinetics and dielectric properties of nanocrystalline lead strontium barium niobates

Ching Tai Cheng, Michael T. Lanagan, Jiang Tsair Lin, Beth Jones, Ming Jen Pan

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The crystallization kinetics and phase developments of PbO-BaO-SrO-Nb2O5-B2 O3-SiO2-based glass-ceramics was investigated. Lead strontium barium niobate, (Pb,Sr,Ba)Nb2O6, with a tetragonal tungsten-bronze structure formed as the major crystalline phase, which showed evidence of both surface and bulk crystallization. The results of the present study showed significant evidence of a change in crystallization mechanism between the as-heated surface and the interior of glass-ceramics. This effect could be attributed to a volatilization of PbO taken place readily on the surface region of sample during heating. The grain size of the bulk-nucleated (Pb,Sr,Ba)Nb2O6 crystals was substantially smaller than that of surface-nucleated crystals. This result facilitated meeting the capacitors as high energy density application due to the ultrafine grains (<60 nm) obtained. The dielectric constant increased from 27 for the as-quenched glass to 200 for a highly crystallized glass-ceramic, which was attributed to a significant volume fraction of (Pb, Sr, Ba)Nb2O6 phase.

Original languageEnglish (US)
Pages (from-to)438-446
Number of pages9
JournalJournal of Materials Research
Volume20
Issue number2
DOIs
StatePublished - Feb 1 2005

Fingerprint

Strontium
Crystallization kinetics
niobates
Barium
strontium
Dielectric properties
barium
dielectric properties
Glass ceramics
Lead
crystallization
glass
kinetics
ceramics
Crystallization
Crystals
Tungsten
vaporizing
Bronze
bronzes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Cheng, Ching Tai ; Lanagan, Michael T. ; Lin, Jiang Tsair ; Jones, Beth ; Pan, Ming Jen. / Crystallization kinetics and dielectric properties of nanocrystalline lead strontium barium niobates. In: Journal of Materials Research. 2005 ; Vol. 20, No. 2. pp. 438-446.
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Crystallization kinetics and dielectric properties of nanocrystalline lead strontium barium niobates. / Cheng, Ching Tai; Lanagan, Michael T.; Lin, Jiang Tsair; Jones, Beth; Pan, Ming Jen.

In: Journal of Materials Research, Vol. 20, No. 2, 01.02.2005, p. 438-446.

Research output: Contribution to journalArticle

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