Title:
LIGHT-TRANSMISSIVE POLYCRYSTALLINE MATERIAL AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/073712
Kind Code:
A1
Abstract:
Provided is a method for producing a light-transmissive polycrystalline material wherein a suspension (slurry 1) is prepared by suspending, in a solution, a starting powder which comprises optically-anisotropic single crystal grains to which a rare earth element has been added. A molded article is obtained from the suspension by slip casting within the space of a magnetic field. The temperature is controlled at this time such that the single crystal grains demonstrate a predetermined magnetic anisotropy while a static magnetic field or a rotary magnetic field is selected and applied in the direction of the easy axis of magnetization of the single crystal grains. The molded article is baked to obtain a light-transmissive polycrystalline material having a polycrystalline structure wherein the crystal orientation is controlled. During this baking step, the molded article is subjected to primary sintering at a temperature of 1,600 to 1,900 K and the primary sintered compact is then subjected to hot isostatic pressing (HIP treatment) at a temperature of 1,600 to 1,900 K.
Inventors:
TAIRA, Takunori (INTER-UNIVERSITY RESEARCH INSTITUTECORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES, 38, Aza Nishigonaka, Myodaiji-cho, Okazaki-sh, Aichi 85, 〒4448585, JP)
平等拓範 (〒85 愛知県岡崎市明大寺町字西郷中３８大学共同利用機関法人自然科学研究機構 分子科学研究所内 Aichi, 〒4448585, JP)
AKIYAMA, Jun (INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION,NATIONAL INSTITUTES OF NATURAL SCIENCES, 38, Aza Nishigonaka, Myodaiji-cho, Okazaki-sh, Aichi 85, 〒4448585, JP)
秋山順 (〒85 愛知県岡崎市明大寺町字西郷中３８大学共同利用機関法人自然科学研究機構 分子科学研究所内 Aichi, 〒4448585, JP)
平等拓範 (〒85 愛知県岡崎市明大寺町字西郷中３８大学共同利用機関法人自然科学研究機構 分子科学研究所内 Aichi, 〒4448585, JP)
AKIYAMA, Jun (INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION,NATIONAL INSTITUTES OF NATURAL SCIENCES, 38, Aza Nishigonaka, Myodaiji-cho, Okazaki-sh, Aichi 85, 〒4448585, JP)
秋山順 (〒85 愛知県岡崎市明大寺町字西郷中３８大学共同利用機関法人自然科学研究機構 分子科学研究所内 Aichi, 〒4448585, JP)
Application Number:
JP2009/007279
Publication Date:
July 01, 2010
Filing Date:
December 25, 2009
Export Citation:
Assignee:
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES (2-21-1, Osawa Mitaka-sh, Tokyo 88, 〒1818588, JP)
大学共同利用機関法人自然科学研究機構 (〒88 東京都三鷹市大沢二丁目２１番１号 Tokyo, 〒1818588, JP)
GENESIS RESEARCH INSTITUTE, INCORPORATED (4-1-35, Noritake-Shinmachi Nishi-ku, Nagoya-sh, Aichi 51, 〒4510051, JP)
株式会社コンポン研究所 (〒51 愛知県名古屋市西区則武新町４丁目１番３５号 Aichi, 〒4510051, JP)
TAIRA, Takunori (INTER-UNIVERSITY RESEARCH INSTITUTECORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES, 38, Aza Nishigonaka, Myodaiji-cho, Okazaki-sh, Aichi 85, 〒4448585, JP)
平等拓範 (〒85 愛知県岡崎市明大寺町字西郷中３８大学共同利用機関法人自然科学研究機構 分子科学研究所内 Aichi, 〒4448585, JP)
大学共同利用機関法人自然科学研究機構 (〒88 東京都三鷹市大沢二丁目２１番１号 Tokyo, 〒1818588, JP)
GENESIS RESEARCH INSTITUTE, INCORPORATED (4-1-35, Noritake-Shinmachi Nishi-ku, Nagoya-sh, Aichi 51, 〒4510051, JP)
株式会社コンポン研究所 (〒51 愛知県名古屋市西区則武新町４丁目１番３５号 Aichi, 〒4510051, JP)
TAIRA, Takunori (INTER-UNIVERSITY RESEARCH INSTITUTECORPORATION, NATIONAL INSTITUTES OF NATURAL SCIENCES, 38, Aza Nishigonaka, Myodaiji-cho, Okazaki-sh, Aichi 85, 〒4448585, JP)
平等拓範 (〒85 愛知県岡崎市明大寺町字西郷中３８大学共同利用機関法人自然科学研究機構 分子科学研究所内 Aichi, 〒4448585, JP)
International Classes:
C04B35/00; B28B1/00; C04B35/447; C04B35/50; C04B35/645; C30B1/02; C30B29/22; H01S3/16
Attorney, Agent or Firm:
OHKAWA, Hiroshi (2-5 Meieki 3-chome, Nakamura-ku Nagoya-sh, Aichi 02, 〒4500002, JP)