Dielectric and piezoelectric properties of lanthanum-modified lead magnesium niobium-lead titanate ceramics

N. Kim, W. Huebner, S. J. Jang, Thomas R. Shrout

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Dielectric and piezoelectric properties of relaxor ferroelectrics in the solid solution, formulated (l-x)(Pb1-1.5yLay)(Mg1/3Nb2/3)— ϗ PbTiO3. have been investigated. The dielectric properties show typical first order ferroelectric behavior for PT ≥ 35% and relaxor type below being indicative of the morphotropic phase boundary. Lanthanum doping resulted in reduction of grain size and shifting of the Tc (Curie Temperature)—25 °C/mole% dounward in PMNPT polycrystalline ceramics. The optimum value of piezoelectric constant. d33, obtained was 560 pC/N for compositions near the morphotropic phase boundary. Based on this investigation, La doped PMN-PT compositions appear to be promising candidates. for fine grain size piezoelectrics. pyroelectric bolometers, and through hot pressing or hot isostatic pressing. for electro-optic applications.

Original languageEnglish (US)
Pages (from-to)341-349
Number of pages9
JournalFerroelectrics
Volume93
Issue number1
DOIs
StatePublished - May 1 1989

Fingerprint

Niobium
Lanthanum
Phase boundaries
lanthanum
niobium
Magnesium
Ferroelectric materials
magnesium
dielectric properties
Lead
grain size
ceramics
hot isostatic pressing
Bolometers
Hot isostatic pressing
hot pressing
bolometers
Hot pressing
Electrooptical effects
Curie temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kim, N. ; Huebner, W. ; Jang, S. J. ; Shrout, Thomas R. / Dielectric and piezoelectric properties of lanthanum-modified lead magnesium niobium-lead titanate ceramics. In: Ferroelectrics. 1989 ; Vol. 93, No. 1. pp. 341-349.
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Dielectric and piezoelectric properties of lanthanum-modified lead magnesium niobium-lead titanate ceramics. / Kim, N.; Huebner, W.; Jang, S. J.; Shrout, Thomas R.

In: Ferroelectrics, Vol. 93, No. 1, 01.05.1989, p. 341-349.

Research output: Contribution to journalArticle

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T1 - Dielectric and piezoelectric properties of lanthanum-modified lead magnesium niobium-lead titanate ceramics

AU - Kim, N.

AU - Huebner, W.

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