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

N. Kim; W. Huebner; S. J. Jang; T. R. Shrout

doi:10.1080/00150198908017366

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

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

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

Dielectric and piezoelectric properties of relaxor ferroelectrics in the solid solution, formulated (l-x)(Pb_1-1.5yLa_y)(Mg_1/3Nb_2/3)— 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 T_c (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 language	English (US)
Pages (from-to)	341-349
Number of pages	9
Journal	Ferroelectrics
Volume	93
Issue number	1
DOIs	https://doi.org/10.1080/00150198908017366
State	Published - May 1 1989

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1080/00150198908017366

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title = "Dielectric and piezoelectric properties of lanthanum-modified lead magnesium niobium-lead titanate ceramics",

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.",

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

AU - Kim, N.

AU - Huebner, W.

AU - Jang, S. J.

AU - Shrout, T. R.

PY - 1989/5/1

Y1 - 1989/5/1

N2 - 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.

AB - 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.

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

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