GB1027042A - Improvements in or relating to ferrimagnetic garnet materials - Google Patents

Improvements in or relating to ferrimagnetic garnet materials

Info

Publication number
GB1027042A
GB1027042A GB3268761A GB3268761A GB1027042A GB 1027042 A GB1027042 A GB 1027042A GB 3268761 A GB3268761 A GB 3268761A GB 3268761 A GB3268761 A GB 3268761A GB 1027042 A GB1027042 A GB 1027042A
Authority
GB
United Kingdom
Prior art keywords
relating
ferrimagnetic garnet
sept
garnet materials
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
GB3268761A
Inventor
Roger Carr Jackson
David Christopher Stapleton
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.)
Plessey Co Ltd
Original Assignee
Plessey 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
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB3268761A priority Critical patent/GB1027042A/en
Priority to FR909230A priority patent/FR1337982A/en
Publication of GB1027042A publication Critical patent/GB1027042A/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
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • 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
    • C04B35/2675—Other ferrites containing rare earth metals, e.g. rare earth ferrite garnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)

Abstract

1,027,042. Magnetic compositions. PLESSEY CO. Ltd. Sept. 5, 1962 [Sept. 12, 1961], No. 32687/61. Heading H1H. A ferrimagnetic garnet has the formula where X is a divalent metal Mg, Cu, Zn or Ni and Z is tetravalent Si or Ge and where 0À1 # p# 3 and 0 < q # 0À5 Basically the invention lies in substituting a mixture of bivalent and tetravalent ions for trivalent iron ions in a Y/Gd garnet to reduce coercivity. In preparation the oxides are mixed prefired for 12 hours at 1000‹ C. in O 2 , pressed into shape and sintered at 1400‹ C. for 6 hours in O 2 .
GB3268761A 1961-09-12 1961-09-12 Improvements in or relating to ferrimagnetic garnet materials Expired GB1027042A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3268761A GB1027042A (en) 1961-09-12 1961-09-12 Improvements in or relating to ferrimagnetic garnet materials
FR909230A FR1337982A (en) 1961-09-12 1962-09-12 Improvements to ferromagnetic materials based on garnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3268761A GB1027042A (en) 1961-09-12 1961-09-12 Improvements in or relating to ferrimagnetic garnet materials

Publications (1)

Publication Number Publication Date
GB1027042A true GB1027042A (en) 1966-04-20

Family

ID=10342503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3268761A Expired GB1027042A (en) 1961-09-12 1961-09-12 Improvements in or relating to ferrimagnetic garnet materials

Country Status (2)

Country Link
FR (1) FR1337982A (en)
GB (1) GB1027042A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824553A1 (en) * 2001-05-11 2002-11-15 Thomson Csf Low magnetic loss ferrite material for hyperfrequency applications has a yttrium and iron based garnet structure conforming to a specified chemical formula

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447851A (en) * 1965-11-08 1969-06-03 Bell Telephone Labor Inc Ferrimagnetic light transmission garnets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824553A1 (en) * 2001-05-11 2002-11-15 Thomson Csf Low magnetic loss ferrite material for hyperfrequency applications has a yttrium and iron based garnet structure conforming to a specified chemical formula
WO2002092532A1 (en) * 2001-05-11 2002-11-21 Thales Ferrite material with low microwave losses and method for making same

Also Published As

Publication number Publication date
FR1337982A (en) 1963-09-20

Similar Documents

Publication Publication Date Title
GB737284A (en) Rectangular loop ferro nagnetic materials
GB1143448A (en) Improvements in or relating to manganese-zinc-ferrites
GB1239813A (en) Magnetic oxide materials
GB1266787A (en)
GB726522A (en) Improvements in and relating to mixed ferrite compositions
GB1027042A (en) Improvements in or relating to ferrimagnetic garnet materials
GB1071611A (en) Process for producting ferrites
GB862135A (en) Improvements in or relating to ferromagnetic materials, more particularly for use inmicro-wave equipment
GB1105788A (en) Improvements relating to ferrimagnetic materials
GB1066453A (en) Ferrimagnetic compositions
GB1070510A (en) Ferromagnetic materials and processes for their manufacture
GB1433805A (en) Methods of electrolysis using complex iron oxide electrodes
GB993533A (en) Improvements in or relating to the growth of single crystals of synthetic garnet
GB834230A (en) Improvements in or relating to magnetically soft ferrites having rectangular hysteresis loops
GB763494A (en) Improvements in or relating to magnetic ferrites
GB1317250A (en) Ferrite materials
GB1256205A (en) Improvements in and relating to the making of lithium ferrites
GB760799A (en) Improvements in or relating to magnetic ceramic materials
GB833007A (en) Improvements in or relating to ferromagnetic materials, more particularly for ferromagnetic bodies for use at frequencies of at least 50 mc/s, methods of manufacturing such materials and ferromagnetic bodies consisting of such materials
GB1029024A (en) Improvements in or relating to ferromagnetic ferrites incorporating lithium
GB988836A (en) Improvements in or relating to permanent magnet materials
GB981143A (en) Ferromagnetic ferrite materials for use at microwave frequencies
GB1216675A (en) Permanent magnet material having strontium ferrite base
GB1086406A (en) Improvements relating to ferrimagnetic material
GB959643A (en)