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    Hydrothermal growth of magnetic garnets and materials so produced
    2.
    发明授权
    Hydrothermal growth of magnetic garnets and materials so produced 失效
    生产的磁性GARNETS和材料的水热生长

    公开(公告)号：US3496108A

    公开(公告)日：1970-02-17

    申请号：US3496108D

    申请日：1966-11-15

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： KOLB ERNEST D ,  LAUDISE ROBERT A ,  SPENCER EDWARD G ,  WOOD DARWIN L

    IPC: C04B35/26 ,  C30B7/00 ,  H01F1/34 ,  H01F41/28 ,  H01F1/10 ,  B01J17/04 ,  C04B35/00

    CPC classification number: H01F41/28 ,  C04B35/2675 ,  C30B7/00 ,  C30B29/28 ,  H01F1/346 ,  Y10S117/90 ,  Y10S117/902 ,  Y10S117/918 ,  Y10T117/1096

    Abstract: 1,203,973. Yttrium iron garnets. WESTERN ELECTRIC CO. Inc. 14 Nov., 1967 [15 Nov., 1966], No. 51783/67. Heading CIA. [Also in Divisions H1 and H4] Crystals of Y 3-x M 1 x Fe 5-y M 11 y O 12 garnet (where M 1 is a trivalent rare earth Nos. 57-71, M 11 is Ga and/or Al, x is 0-0À3, and y is 0-1.25) are grown by placing a seed crystal and a nutrient mass in a closed vessel in a 10-25 M solution of KOH in H 2 O or D 2 O, heating the solution to at least 350‹ C. while under a pressure exceeding the critical pressure, and maintaining a temperature difference between the seed and the mass of at least 5‹ C. The temperature is preferably 350-425‹ C., the pressure 8000-35000 psi, and the temperature difference 10-50‹ C. The seed crystal orientation may be (100), (211), (111) or (110). The nutrient mass may be a mixture of the oxides, which may be sintered, or crystals grown hydrothermally under maximum growth conditions. The vessel may be Pt lined and may be filled to 70-95% of its volume before heating. A baffle may be placed between the nutrient mass in the bottom of the vessel and the crystals suspended above, to maintain the temperature difference.

    Hydrothermal growth of rare earth orthoferrites and materials so produced
    3.
    发明授权
    Hydrothermal growth of rare earth orthoferrites and materials so produced 失效
    稀土元素的生长和生产的材料

    公开(公告)号：US3485759A

    公开(公告)日：1969-12-23

    申请号：US3485759D

    申请日：1967-08-15

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： KOLB ERNEST D ,  LAUDISE ROBERT A ,  SPENCER EDWARD G ,  WOOD DARWIN L

    IPC: C04B35/26 ,  C30B7/00 ,  H01F41/28

    CPC classification number: H01F41/28 ,  C04B35/2675 ,  C30B7/00 ,  C30B7/005 ,  C30B29/24

    Abstract: 1,243,021. Rare earth orthoferrites. WESTERN ELECTRIC CO. 15 Aug., 1968 [15 Aug., 1967], No. 39102/68. Heading C1A. [Also in Divisions H1 and H3] Crystals of RFeO 3 (where at least 80% of the R atoms comprise at least one of Y, Sm, Eu, Gd, Tb Dy, Ho, Er, Tm and Yb, and 0-20% of the R atoms comprise at least one of La, Ce, Pr, and Nb) are grown by placing a seed crystal and a nutrient mass in a closed vessel in a 10-25M aqueous solution of KOH, heating the solution to at least 300‹ C. while under a pressure exceeding the critical pressure, and maintaining a temperature difference between the seed and the mass of at least 5‹ C. The temperature is preferably 350-425‹ C., the pressure 8000-35,000 p.s.i., and the temperature difference 10-50‹ C. The seed crystal is orthorhombic and may be TbAlO 3 ; its orientation is preferably (110) or (001). The nutrient mass may be a mixture of oxides, which may be sintered, or crystals grown by flux methods. The vessel may be Pt lined and may be filled to 70-95% of its volume before heating. A baffle may be placed between the nutrient mass in the bottom of the vessel and the crystals suspended above, to maintain the temperature difference. The + 3 valence state of La and Eu may be maintained by the presence of H 2 and O 2 respectively. In the examples, R was Yb, Sm/Er, Y, Ho, and Tb. The product is antiferromagnetic.

    Abstract translation: 1,243,021。 稀土正铁。 WESTERN ELECTRIC CO。1968年8月15日[1967年8月15日]，第39102/68号。 标题C1A。 [也在分部H1和H3] RFeO 3的晶体（其中至少80％的R原子包含Y，Sm，Eu，Gd，Tb Dy，Ho，Er，Tm和Yb中的至少一个，以及0-20 通过将晶种和营养物质放置在10-25M KOH水溶液中的密闭容器中，使至少一种R原子构成La，Ce，Pr和Nb中的至少一种，将该溶液加热至少 在超过临界压力的压力下，并保持种子和质量之间的温度差至少为5℃。温度优选为350-425℃，压力为8000-35,000psi，和 温差为10-50℃。晶种为斜方晶，可为TbAlO 3; 其取向优选为（110）或（001）。 营养物质可以是可以烧结的氧化物或通过助熔剂生长的晶体的混合物。 容器可以是铂衬里，并且可以在加热之前填充到其体积的70-95％。 容器底部的营养物质和悬浮在上面的晶体之间可以放置挡板，以保持温差。 La和Eu的+ 3价态可以分别通过H 2和O 2的存在来维持。 在实施例中，R为Yb，Sm / Er，Y，Ho和Tb。 该产品具有反铁磁性。

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