Chemically prepared lead magnesium niobate dielectrics

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Description

A chemical solution powder synthesis technique has been developed that produces first, uniform powders of lead magnesium niobate (PMN) with 60 to 80 nm crystallite size. The synthesis technique was based on the dissolution of lead acetate and alkoxide precursors in acetic acid followed by precipitation with oxalic acid/propanol solutions. Lead magnesium niobate ceramics fabricated from these chemically derived powders had smaller, more uniform grain size and higher dielectric constants than ceramics fabricated from mixed oxide powders that were processed under similar thermal conditions. Chem-prep PMN dielectrics with peak dielectric constants greater than 22,000 and polarizations in excess of 29 ... continued below

Physical Description

11 p.

Creation Information

Tuttle, B.A.; Voigt, J.A.; Sipola, D.L.; Olson, W.R. & Goy, D.M. November 1, 1998.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A chemical solution powder synthesis technique has been developed that produces first, uniform powders of lead magnesium niobate (PMN) with 60 to 80 nm crystallite size. The synthesis technique was based on the dissolution of lead acetate and alkoxide precursors in acetic acid followed by precipitation with oxalic acid/propanol solutions. Lead magnesium niobate ceramics fabricated from these chemically derived powders had smaller, more uniform grain size and higher dielectric constants than ceramics fabricated from mixed oxide powders that were processed under similar thermal conditions. Chem-prep PMN dielectrics with peak dielectric constants greater than 22,000 and polarizations in excess of 29 {micro}C/cm{sup 2} were obtained for 1,100 C firing treatments. Substantial decreases in dielectric constant and polarization were measured for chemically prepared PMN ceramics fired at lower temperatures, consistent with previous work on mixed oxide materials.

Physical Description

11 p.

Notes

OSTI as DE98003053

Source

  • 1997 fall meeting of the Materials Research Society, Boston, MA (United States), 1-5 Dec 1997

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  • Other: DE98003053
  • Report No.: SAND--98-0366C
  • Report No.: CONF-971201--
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/666017 | External Link
  • Office of Scientific & Technical Information Report Number: 666017
  • Archival Resource Key: ark:/67531/metadc708644

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  • November 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 14, 2016, 7:29 p.m.

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Tuttle, B.A.; Voigt, J.A.; Sipola, D.L.; Olson, W.R. & Goy, D.M. Chemically prepared lead magnesium niobate dielectrics, report, November 1, 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc708644/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.