Dielectric Properties of Lead‐Magnesium Niobate Ceramics

S. L. SWARTZ; T. R. SHROUT; W. A. SCHULZE; L. E. CROSS

doi:10.1111/j.1151-2916.1984.tb19528.x

Dielectric Properties of Lead‐Magnesium Niobate Ceramics

S. L. SWARTZ, T. R. SHROUT, W. A. SCHULZE, L. E. CROSS

Materials Research Institute (MRI)

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511 Scopus citations

Abstract

Dielectric properties are reported for lead magnesium niobate (PbMg_1/3Nb_2/3/O₃) ceramics which were prepared as single phase (i.e., without pyrochlore) with an improved technique. Dielectric constants of 18000 for pure PMN and 31000 for PMN with 10% PbTiO₃ were achieved; these values are 50% larger than those reported in the literature. The dielectric constant of PMN ceramics was found to increase with both sintering temperature and excess MgO, and subsequent analysis of the microstructures confirmed that this was due to an increase in grain size. This grain‐size dependence is explained as a consequence of low‐permittivity grain boundaries.

Original language	English (US)
Pages (from-to)	311-314
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	67
Issue number	5
DOIs	https://doi.org/10.1111/j.1151-2916.1984.tb19528.x
State	Published - May 1984

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1984.tb19528.x

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abstract = "Dielectric properties are reported for lead magnesium niobate (PbMg1/3Nb2/3/O3) ceramics which were prepared as single phase (i.e., without pyrochlore) with an improved technique. Dielectric constants of 18000 for pure PMN and 31000 for PMN with 10% PbTiO3 were achieved; these values are 50% larger than those reported in the literature. The dielectric constant of PMN ceramics was found to increase with both sintering temperature and excess MgO, and subsequent analysis of the microstructures confirmed that this was due to an increase in grain size. This grain‐size dependence is explained as a consequence of low‐permittivity grain boundaries.",

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T1 - Dielectric Properties of Lead‐Magnesium Niobate Ceramics

AU - SWARTZ, S. L.

AU - SHROUT, T. R.

AU - SCHULZE, W. A.

AU - CROSS, L. E.

PY - 1984/5

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N2 - Dielectric properties are reported for lead magnesium niobate (PbMg1/3Nb2/3/O3) ceramics which were prepared as single phase (i.e., without pyrochlore) with an improved technique. Dielectric constants of 18000 for pure PMN and 31000 for PMN with 10% PbTiO3 were achieved; these values are 50% larger than those reported in the literature. The dielectric constant of PMN ceramics was found to increase with both sintering temperature and excess MgO, and subsequent analysis of the microstructures confirmed that this was due to an increase in grain size. This grain‐size dependence is explained as a consequence of low‐permittivity grain boundaries.

AB - Dielectric properties are reported for lead magnesium niobate (PbMg1/3Nb2/3/O3) ceramics which were prepared as single phase (i.e., without pyrochlore) with an improved technique. Dielectric constants of 18000 for pure PMN and 31000 for PMN with 10% PbTiO3 were achieved; these values are 50% larger than those reported in the literature. The dielectric constant of PMN ceramics was found to increase with both sintering temperature and excess MgO, and subsequent analysis of the microstructures confirmed that this was due to an increase in grain size. This grain‐size dependence is explained as a consequence of low‐permittivity grain boundaries.

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Dielectric Properties of Lead‐Magnesium Niobate Ceramics

Abstract

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