公开(公告)号：EP0348986A3

公开(公告)日：1990-11-14

申请号：EP89111911.7

申请日：1989-06-30

Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO ,  NEC CORPORATION ,  OSAKA CEMENT CO., LTD. ,  SEISAN KAIHATSU KAGAKU KENKYUSHO ,  TODA KOGYO CORP. ,  Tosoh Corporation

Inventor： Takada, Toshio ,  Takano, Mikio ,  Miura, Yoshinari ,  Takada, Jun ,  Oda, Kiichi ,  Yamamoto, Naoichi

IPC: H01L39/12 ,  C04B35/50 ,  C04B35/00

CPC classification number: H01L39/126 ,  C04B35/4525 ,  H01L39/2419 ,  Y10S505/782

Abstract: A Bi-Pb-Sr-Ba-Ca-Cu-O system superconductor having a composition of:
Bi l Pb m Sr p Ba q Ca y Cu z O x
wherein l, m, p, q, y and z satisfy the following inequali­ties:
0.50
0.01 ≦ m ≦ 0.60
0.70 ≦ p ≦ 1.60
0.005 ≦ q ≦ 0.80
0.70 ≦ y ≦ 1.60
1.40 ≦ z ≦ 3.00
which has the critical temperature of at least 77 K and contains the high T c phase in a high fraction.

公开(公告)号：EP0348986A2

公开(公告)日：1990-01-03

申请号：EP89111911.7

申请日：1989-06-30

Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO ,  NEC CORPORATION ,  OSAKA CEMENT CO., LTD. ,  SEISAN KAIHATSU KAGAKU KENKYUSHO ,  TODA KOGYO CORP. ,  Tosoh Corporation

Inventor： Takada, Toshio ,  Takano, Mikio ,  Miura, Yoshinari ,  Takada, Jun ,  Oda, Kiichi ,  Yamamoto, Naoichi

IPC: H01L39/12 ,  C04B35/50 ,  C04B35/00

CPC classification number: H01L39/126 ,  C04B35/4525 ,  H01L39/2419 ,  Y10S505/782

Abstract: A Bi-Pb-Sr-Ba-Ca-Cu-O system superconductor having a composition of:
Bi l Pb m Sr p Ba q Ca y Cu z O x
wherein l, m, p, q, y and z satisfy the following inequali­ties:
0.50
0.01 ≦ m ≦ 0.60
0.70 ≦ p ≦ 1.60
0.005 ≦ q ≦ 0.80
0.70 ≦ y ≦ 1.60
1.40 ≦ z ≦ 3.00
which has the critical temperature of at least 77 K and contains the high T c phase in a high fraction.

Abstract translation: 具有BilPbmSrpBaqCayCuzOx的Bi-Pb-Sr-Ba-Ca-Cu-O系超导体，其中l，m，p，q，y和z满足以下不等式：0.50

公开(公告)号：EP0116449B1

公开(公告)日：1988-09-21

申请号：EP84300700.6

申请日：1984-02-03

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Horiishi, Nanao ,  Kiyama, Masao ,  Takada, Toshio

IPC: C01G49/00 ,  H01F1/11

CPC classification number: B82Y30/00 ,  C01G49/0036 ,  C01P2004/04 ,  C01P2004/20 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  G11B5/70678

公开(公告)号：EP0232132A2

公开(公告)日：1987-08-12

申请号：EP87300780.1

申请日：1987-01-29

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Fujimoto, Katsunori ,  Ota, Yasutaka ,  Kiyama, Masao ,  Takada, Toshio ,  Hirayama, Akihiko ,  Sugita, Norio

IPC: G11B5/706 ,  H01F1/11

CPC classification number: G11B5/70678 ,  Y10S428/90 ,  Y10T428/2982 ,  Y10T428/2991

Abstract: Plate-like barium ferrite particles with a solid solution of zinc on the surface thereof, suitable for use in magnetic recording media, have an average particle diameter of 0.05 to 0.3 µm, a coercive force of 2.39 × l0⁴ to ll.94 × l0⁴ Am⁻¹ (300 to l,500 Oe) and a magnetization of not less than 55 Am²,/kg (55 emu/g) in a magnetic field of 7.96 x l0⁵ Am⁻¹ (l0 KOe) and which are represented by the following formula (I):
    BaO.n[Fe 1-2x Co x Ti x )₂O₃] ......... (I)
wherein x is from 0 to 0.l and n is from 4 to ll.

Abstract translation: 适用于磁记录介质的在其表面上具有锌固溶体的板状钡铁氧体颗粒具有0.05至0.3μm的平均粒径，2.39×10 4至1​​1.94×10 4 Am的矫顽力 （300-1,500Oe）和在7.96×10 -5 Am -1（10KOe）的磁场中不小于55Am 2，/ kg（55emu / g）的磁化强度，并且由下列 式（I）：BaO.n [Fe1-2xCoxTix）2O3] .........（I）其中x为0-0.1，n为4-11。

公开(公告)号：EP0231128A2

公开(公告)日：1987-08-05

申请号：EP87300784.3

申请日：1987-01-29

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Fujimoto, Katsunori ,  Ota, Yasutaka ,  Kiyama, Masao ,  Takada, Toshio

IPC: G11B5/706 ,  H01F1/11 ,  C04B35/26

CPC classification number: B82Y30/00 ,  C01G49/009 ,  C01P2002/32 ,  C01P2004/04 ,  C01P2004/20 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  G11B5/70678 ,  H01F1/11

Abstract: Plate-like barium ferrite particles, suitable for use in the preparation of sintered magnets and magnetic recording media, have an average particle diameter of not less than 0.03 µm but less than 0.1 µm and are represented by the following formular (I):
wherein x and y are independently from 0.02 to 0.12, n is from 4 to 7, the atomic ratio of Co : Fe(III) is from 0.02 to 0.13 : I and the molar ratio of Ti : Co is from more than 0 to not more than 0.8:1.

Abstract translation: 适用于制备烧结磁体和磁记录介质的板状钡铁氧体颗粒的平均粒径不小于0.03μm但小于0.1μm，并由以下公式（I ）：... BaO.n [Fe1-x-yCoxTiy] 2O3-x + y] .......（I）...其中x和y独立地为0.02〜0.12，n为4〜7 ，Co：Fe（III）的原子比为0.02〜0.33：1，Ti：Co的摩尔比为0〜0.8：1。

公开(公告)号：EP0145229A1

公开(公告)日：1985-06-19

申请号：EP84307521.9

申请日：1984-10-30

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Horiishi, Nanao ,  Kiyama, Masao ,  Takada, Toshio

IPC: C01G49/00 ,  C01G23/00 ,  C04B35/00 ,  H01F1/11

CPC classification number: B82Y30/00 ,  C01G49/0036 ,  C01G49/0063 ,  C01G49/0072 ,  C01G49/009 ,  C01G51/006 ,  C01G53/006 ,  C01P2002/32 ,  C01P2002/54 ,  C01P2004/20 ,  C01P2004/64 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/42 ,  C01P2006/60 ,  G11B5/70678 ,  H01F1/11

Abstract: Plate-like barium ferrite particles which are suitable for the magnetic material for magnetic recording media and which are represented by the formula (I):
wherein x and y are independently from 0.3 to 1.2 and M is a divalent metal selected from Co, Ni, Zn and Mn, are produced by autoclaving at a temperature of 250 to 330°C an aqueous alkaline suspended containing Ba ions, spinel particles which are represented by the formula (II): Fe 12-x-y M x Ti y O 18 wherein x, y and M are as defined above and which have an average particle size of less than 0.1 µm, and a molar excess with respect to the total amount of Fe (III), Ti (IV), M (II) and Ba ions of an alkali metal hydroxide, the atomic ratio of Ba to total amount of the metals in the spinel particles of formula (II) being from 1:8 to 1:10.

Abstract translation: 适用于磁记录介质的磁性材料，由式（I）表示的板状钡铁氧体颗粒：... BaFe12-x-yMxTiyO19（I）...其中x和y分别为0.3〜1.2，M 是选自Co，Ni，Zn和Mn中的二价金属，是通过在250-330℃的温度下高压灭菌而制备的含有Ba离子的碱性悬浮液，由式（II）表示的尖晶石颗粒：Fe12-xy MxTiyO16其中x，y和M如上所定义，平均粒径小于0.1μm，相对于Fe（III），Ti（IV），M（II）的总量的摩尔过量， 和碱金属氢氧化物的Ba离子，Ba与式（II）的尖晶石颗粒中金属的总量的原子比为1:8至1:10。

公开(公告)号：EP0141558B2

公开(公告)日：1992-09-30

申请号：EP84307016.0

申请日：1984-10-12

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Horiishi, Nanao ,  Kiyama, Masao ,  Takada, Toshio

IPC: H01F1/11 ,  C01G51/00 ,  G11B5/70

CPC classification number: G11B5/714 ,  G11B5/70678

公开(公告)号：EP0231128B1

公开(公告)日：1991-11-21

申请号：EP87300784.3

申请日：1987-01-29

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Fujimoto, Katsunori ,  Ota, Yasutaka ,  Kiyama, Masao ,  Takada, Toshio

IPC: G11B5/706 ,  H01F1/11 ,  C04B35/26

CPC classification number: B82Y30/00 ,  C01G49/009 ,  C01P2002/32 ,  C01P2004/04 ,  C01P2004/20 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  G11B5/70678 ,  H01F1/11

公开(公告)号：EP0123445B2

公开(公告)日：1991-03-20

申请号：EP84302018.1

申请日：1984-03-26

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Horiishi, Nanao ,  Kiyama, Masao ,  Takada, Toshio

IPC: H01F1/11 ,  G11B5/70

CPC classification number: G11B5/70678

公开(公告)号：EP0123445B1

公开(公告)日：1986-08-06

申请号：EP84302018.1

申请日：1984-03-26

Applicant: TODA KOGYO CORP.

Inventor： Nagai, Norimichi ,  Horiishi, Nanao ,  Kiyama, Masao ,  Takada, Toshio

IPC: H01F1/11 ,  G11B5/70

CPC classification number: G11B5/70678