GB909230A - Improvements in or relating to the etching of single crystals of garnet, spinels, orthoferrites and corundum - Google Patents

Improvements in or relating to the etching of single crystals of garnet, spinels, orthoferrites and corundum

Info

Publication number
GB909230A
GB909230A GB18158/61A GB1815861A GB909230A GB 909230 A GB909230 A GB 909230A GB 18158/61 A GB18158/61 A GB 18158/61A GB 1815861 A GB1815861 A GB 1815861A GB 909230 A GB909230 A GB 909230A
Authority
GB
United Kingdom
Prior art keywords
etching
orthoferrites
spinels
garnet
temperature
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
GB18158/61A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB909230A publication Critical patent/GB909230A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/22—Complex oxides
    • 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
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C04B41/5338—Etching
    • C04B41/5361—Etching with molten material
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B9/00—Single-crystal growth from melt solutions using molten solvents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/24—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids
    • H01F41/28—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids by liquid phase epitaxy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

909,230. Etching. WESTERN ELECTRIC CO. Inc. May 18, 1961 [June 2, 1960], No. 18158/61. Class 100 (2). [Also in Group XXIII] Single crystals of garnet, spinels, orthoferrites or carborundum are etched with a mixture of lead oxide and boron oxide by heating therewith to a temperature of 500-800‹ C. The weight ratio of boron oxide to lead oxide is in the range of 0.9: 10 to 1.1: 10. A crystal to be etched is placed together with the etching ingredients in a platinum crucible, and after melting of the etching material agitated together, whereafter the temperature is raised to the etching temperature. After etching, the melt is allowed to cool into a clear, transparent, yellow glass with the crystal embedded therein. If the etching is sufficient, the glass is dissolved in nitric acid to release the crystal.
GB18158/61A 1960-06-02 1961-05-18 Improvements in or relating to the etching of single crystals of garnet, spinels, orthoferrites and corundum Expired GB909230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33369A US3063886A (en) 1960-06-02 1960-06-02 Boron oxide-lead oxide etchant and etching process

Publications (1)

Publication Number Publication Date
GB909230A true GB909230A (en) 1962-10-31

Family

ID=21870031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18158/61A Expired GB909230A (en) 1960-06-02 1961-05-18 Improvements in or relating to the etching of single crystals of garnet, spinels, orthoferrites and corundum

Country Status (4)

Country Link
US (1) US3063886A (en)
BE (1) BE604269A (en)
DE (1) DE1175138B (en)
GB (1) GB909230A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2085452A1 (en) * 1970-04-22 1971-12-24 Anvar

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143448A (en) * 1962-02-21 1964-08-04 Mette Herbert Photomagnetoelectric cell and method
US3370963A (en) * 1965-03-24 1968-02-27 Bell Telephone Labor Inc Growth of divalent metal aluminates
US4033743A (en) * 1974-03-22 1977-07-05 General Electric Company Chemically polished polycrystalline alumina material
US20050022721A1 (en) * 2003-07-31 2005-02-03 Kolis Joseph W. Acentric, rhombohedral lanthanide borate crystals, method for making, and applications thereof
US20050022720A1 (en) * 2003-07-31 2005-02-03 Kolis Joseph W. Acentric orthorhombic lanthanide borate crystals, method for making, and applications thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510219A (en) * 1947-09-13 1950-06-06 Linde Air Prod Co Glossing corundum crystals
DE828974C (en) * 1948-10-02 1952-01-21 Degussa Process for the production of smooth surfaces on objects made of sintered clay
NL217651A (en) * 1956-05-29 1900-01-01
US2957827A (en) * 1957-04-30 1960-10-25 Bell Telephone Labor Inc Method of making single crystal garnets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2085452A1 (en) * 1970-04-22 1971-12-24 Anvar

Also Published As

Publication number Publication date
BE604269A (en) 1961-09-18
US3063886A (en) 1962-11-13
DE1175138B (en) 1964-07-30

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