[go: up one dir, main page]

GB1242514A - Calcium-vanadium series ferrimagnetic garnets - Google Patents

Calcium-vanadium series ferrimagnetic garnets

Info

Publication number
GB1242514A
GB1242514A GB5428/70A GB542870A GB1242514A GB 1242514 A GB1242514 A GB 1242514A GB 5428/70 A GB5428/70 A GB 5428/70A GB 542870 A GB542870 A GB 542870A GB 1242514 A GB1242514 A GB 1242514A
Authority
GB
United Kingdom
Prior art keywords
garnets
ferrimagnetic
calcium
feb
hours
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5428/70A
Inventor
Hideo Takamizawa
Keiichi Yotsuyanagi
Takashi Okada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP44009410A external-priority patent/JPS4829119B1/ja
Priority claimed from JP44051190A external-priority patent/JPS4827117B1/ja
Application filed by Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of GB1242514A publication Critical patent/GB1242514A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2641—Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

1,242,514. Ferrimagnetic garnets. NIPPON ELECTRIC CO. Ltd. 4 Feb., 1970 [7 Feb,. 1969; 27 June, 1969], No. 5428/70. Heading H1H. Modified calcium-vanadium ferrimagnetic garnets have the formula: where the values of x and y lie within the polygonal area ABCDE (Fig. 7) bounded by the coordinates (x first); A(0À05, 0À05); B(0À8, 0À05); C(1À8, 1À1); D(0À5, 2À4); E(0À05, 2À4) the range in which 0À95#y-x#1À05 being excluded. In one embodiment, the garnets are further substituted by tantalum and have the formula: where 0À05#x#0À8; 0À05#y#1À4; 0#z#0À17, provided that the values of x, y and z do not satisfy 0À95#4z+y-x#1À05. The garnets may be made by heating a mixture of oxides or oxideforming compounds at 800-1150‹ C., for 1-8 hours in an oxidizing atmosphere, and then sintering the crushed and press-moulded product at 1160-1350‹ C., for 1-30 hours. The points indicated on the polygonal area ABCDE (Fig. 7) correspond to exemplified garnets.
GB5428/70A 1969-02-07 1970-01-04 Calcium-vanadium series ferrimagnetic garnets Expired GB1242514A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP44009410A JPS4829119B1 (en) 1969-02-07 1969-02-07
JP44051190A JPS4827117B1 (en) 1969-06-27 1969-06-27

Publications (1)

Publication Number Publication Date
GB1242514A true GB1242514A (en) 1971-08-11

Family

ID=26344134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5428/70A Expired GB1242514A (en) 1969-02-07 1970-01-04 Calcium-vanadium series ferrimagnetic garnets

Country Status (5)

Country Link
US (1) US3639247A (en)
DE (1) DE2005510A1 (en)
FR (1) FR2032799A5 (en)
GB (1) GB1242514A (en)
NL (1) NL7001758A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365861A (en) * 2000-08-18 2002-02-27 Murata Manufacturing Co Yttrium iron-based garnet magnetic material for high frequency curcuit component

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763045A (en) * 1970-04-03 1973-10-02 Nippon Electric Co Calcium-vanadium ferrimagnetic garnets
US3886533A (en) * 1973-07-20 1975-05-27 Bell Telephone Labor Inc Magnetic devices utilizing garnet epitaxial material
FR2369229A1 (en) * 1976-10-26 1978-05-26 Thomson Csf FERRIMAGNE GARNET
IT1213266B (en) * 1984-02-21 1989-12-14 Selenia Ind Elettroniche METHOD FOR THE SUPPRESSION OF MAGNETOSTATIC WAVES IN MAGNETIC GARNET FILM FOR MICROWAVE CIRCUITS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156651A (en) * 1962-03-28 1964-11-10 Bell Telephone Labor Inc Light transparent ferrimagnetic garnets
US3268452A (en) * 1963-07-10 1966-08-23 Bell Telephone Labor Inc Vanadium-containing garnets
US3281363A (en) * 1963-07-10 1966-10-25 Bell Telephone Labor Inc Bismuth-containing garnets and their preparation
US3291740A (en) * 1963-11-29 1966-12-13 Bell Telephone Labor Inc Ferrimagnetic garnet compositions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365861A (en) * 2000-08-18 2002-02-27 Murata Manufacturing Co Yttrium iron-based garnet magnetic material for high frequency curcuit component
GB2365861B (en) * 2000-08-18 2002-11-06 Murata Manufacturing Co Magnetic material for high frequencies and high-frequency circuit component
US6624713B2 (en) 2000-08-18 2003-09-23 Murata Manufacturing Co., Ltd. Magnetic material for high frequencies and high-frequency circuit component

Also Published As

Publication number Publication date
NL7001758A (en) 1970-08-11
FR2032799A5 (en) 1970-11-27
US3639247A (en) 1972-02-01
DE2005510A1 (en) 1970-12-03

Similar Documents

Publication Publication Date Title
ES344599A1 (en) Anti-secretory compositions containing xanthen derivatives and uses therefor
CA960851A (en) Processes, phosphors and compositions
GB1242514A (en) Calcium-vanadium series ferrimagnetic garnets
CA918812A (en) File protect circuit and method
CA937646A (en) Ferrite power limiter
GB1352968A (en) Odorant and or flavorant
GB1024456A (en) Ferrite composition and method of preparation
AU456763B2 (en) Modified polyhenylene oxide resin compositions
CA935100A (en) Pallets and stillages
Kirk Ferrite-core transformer bonding and potting. final report
JPS51142257A (en) Signal-vector discrimination circuit
GB1172968A (en) Improvements in or relating to Nickel-Zinc Ferrites
CA658907A (en) Electroluminescent cell, method and ceramic composition
GB1377114A (en) Ferroelectric ceramic compositions
CA676160A (en) Luminescent printing composition and method of making the same
AU293324B2 (en) Method of controlling the hydrolysis of urea in soils, and compositions therefor
CA659664A (en) Thick, hard-surfaced composition board and method of making the same
AU446783B2 (en) Di(organtin) oxides and their use as stabilizers
AU4990564A (en) Method of controlling the hydrolysis of urea in soils, and compositions therefor
CA847541A (en) High power semiconductor control element and associated circuitry
AU278780B2 (en) Phenthiazine compounds, method of preparing same and compositions comparing same
CA664736A (en) Chlorobutadiene and chloroprene composition
AU417806B2 (en) 3,5-dinitrosalicylic acid, 5-nitrofurfurylidene hydrazide and protozacidal compositions containing the same
CA942886A (en) Magnetic card and method of making and magnetizing the same
CA668034A (en) Method and composition for formation fracturing