Title: Nonaqueous solution synthesis process for preparing oxide powders of lead zirconate titanate and related materials

Abstract

A process for producing powders of perovskite-type compounds which comprises mixing a metal alkoxide solution with a lead acetate solution to form a homogeneous, clear metal solution, adding an oxalic acid/n-propanol solution to this metal solution to form an easily filterable, free-flowing precursor powder and then calcining this powder. This process provides fine perovskite-phase powders with ferroelectric properties which are particularly useful in a variety of electronic applications.

Inventors:

Voigt, James A ^[1]; Sipola, Diana L ^[2]; Tuttle, Bruce A ^[2]; Anderson, Mark T ^[3]

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+ Show Inventor Affiliations

1. Corrales, NM
2. Albuquerque, NM
3. Woodbury, MN

Issue Date:

Fri Jan 01 00:00:00 EST 1999

Research Org.:

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

OSTI Identifier:

872312

Patent Number(s):

5908802

Assignee:

Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G23/00 - Compounds of titanium {
C01G25/00 - Compounds of zirconium
C01G29/006 - {Compounds containing, besides bismuth, two or more other elements, with the exception of oxygen or hydrogen}
C01G33/006 - {Compounds containing, besides niobium, two or more other elements, with the exception of oxygen or hydrogen}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/34 - perovskite-type
C01P2002/54 - one element only
C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2006/40 - Electric properties

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B35/499 - containing also titanates

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DOE Contract Number:  

AC04-94AL85000

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

nonaqueous; solution; synthesis; process; preparing; oxide; powders; lead; zirconate; titanate; related; materials; producing; perovskite-type; compounds; comprises; mixing; metal; alkoxide; acetate; form; homogeneous; adding; oxalic; acid; n-propanol; easily; filterable; free-flowing; precursor; powder; calcining; provides; fine; perovskite-phase; ferroelectric; properties; particularly; useful; variety; electronic; applications; synthesis process; oxalic acid; related materials; zirconate titanate; process provides; metal alkoxide; aqueous solution; particularly useful; oxide powder; precursor powder; oxide powders; comprises mixing; solution synthesis; nonaqueous solution; electronic applications; alkoxide solution; lead zirconate; oxide solution; acetate solution; /501/252/423/