RARE EARTH GARNET SINTERED COMPACT

Title:

RARE EARTH GARNET SINTERED COMPACT

Document Type and Number:

WIPO Patent Application WO/2004/067474

Kind Code:

A1

Abstract:

A rare earth garnet sintered compact which is produced by subjecting a rare earth garnet powder such as YAG to a pre-sintering, sintering the pre-sintered product by HIP, and annealing the sintered product at 1100 &ring C to 1600&ring C in a whole oxygen atmosphere under a whole pressure of 4.5 MPa or more, and has an average crystallite diameter of 0.9 to 9 μm, an optical loss coefficient of 0.002 cm^-1or less and a strain of a transmitted wave of 0.05 &lgr cm^-1or less.

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Inventors:

YANAGITANI TAKAGIMI (JP)
YAGI HIDEKI (JP)

Application Number:

PCT/JP2003/000750

Publication Date:

August 12, 2004

Filing Date:

January 27, 2003

Export Citation:

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Assignee:

KONOSHIMA CHEMICAL (JP)
YANAGITANI TAKAGIMI (JP)
YAGI HIDEKI (JP)

International Classes:

C04B35/44; C04B35/50; C04B35/51; C04B35/645; (IPC1-7): C04B35/50; C04B35/44

Foreign References:

JP2001158660A	2001-06-12
US5075267A	1991-12-24
JP2001089225A	2001-04-03
JPH11130428A	1999-05-18
JP2001158620A	2001-06-12
US5013696A	1991-05-07
EP0463369A1	1992-01-02

Other References: