GB910078A - Improvements in or relating to methods of floating-zone melting - Google Patents

Improvements in or relating to methods of floating-zone melting

Info

Publication number
GB910078A
GB910078A GB22834/61A GB2283461A GB910078A GB 910078 A GB910078 A GB 910078A GB 22834/61 A GB22834/61 A GB 22834/61A GB 2283461 A GB2283461 A GB 2283461A GB 910078 A GB910078 A GB 910078A
Authority
GB
United Kingdom
Prior art keywords
rod
cross
zone
induction coils
pict
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
GB22834/61A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB910078A publication Critical patent/GB910078A/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
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/06—Single-crystal growth by zone-melting; Refining by zone-melting the molten zone not extending over the whole cross-section

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • General Induction Heating (AREA)

Abstract

<PICT:0910078/III/1> <PICT:0910078/III/2> A vertical rod is zone-melted by the passage simultaneously of a plurality of spaced molten zones, each of which covers only part of the cross-section of the rod, but which together cover the entire cross-section of the rod. Circle or oval-shaped induction heating coils may be used. As shown, a rod 18 between holders 2 and 3 is heated by a relatively moving device comprising induction coils 4, 5, 6, and 7 connected in series. Each of induction coils 4, 5, and 6 produces a molten zone 8 surrounding an unmelted eccentric core 12, whereas coil 7 produces a completely molten zone. The lower holder 3 may be rotated. The distance between successive induction coils may be 4 cm. The cross-sectional area of the core may be one quarter to one hundredth that of the rod.
GB22834/61A 1960-06-28 1961-06-23 Improvements in or relating to methods of floating-zone melting Expired GB910078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL253184 1960-06-28

Publications (1)

Publication Number Publication Date
GB910078A true GB910078A (en) 1962-11-07

Family

ID=19752439

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22834/61A Expired GB910078A (en) 1960-06-28 1961-06-23 Improvements in or relating to methods of floating-zone melting

Country Status (4)

Country Link
US (1) US3177051A (en)
DE (1) DE1220389B (en)
GB (1) GB910078A (en)
NL (2) NL104013C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011091537A1 (en) * 2010-02-01 2011-08-04 Kudu Industries Inc. A system and method for induction heating a helical rotor using a coil
CN112357894A (en) * 2020-11-17 2021-02-12 昆明理工大学 Crude tellurium crystallization purification method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271118A (en) * 1961-10-18 1966-09-06 Monsanto Co Seed crystals and methods using the same
US3449087A (en) * 1966-06-27 1969-06-10 Commerce Usa Purification by selective crystallization and remelt
DE1644006A1 (en) * 1967-04-29 1970-04-02 Siemens Ag Device for crucible-free zone melting of a crystalline rod, in particular a semiconductor rod
US3773499A (en) * 1968-04-03 1973-11-20 M Melnikov Method of zonal melting of materials
GB1542868A (en) * 1975-11-14 1979-03-28 Siemens Ag Production of phosphorus-doped monocrystalline silicon rods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE510303A (en) * 1951-11-16
DE1062431B (en) * 1953-02-14 1959-07-30 Siemens Ag Method and device for remelting elongated bodies by zone melting
US3023091A (en) * 1959-03-02 1962-02-27 Raytheon Co Methods of heating and levitating molten material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011091537A1 (en) * 2010-02-01 2011-08-04 Kudu Industries Inc. A system and method for induction heating a helical rotor using a coil
US8723088B2 (en) 2010-02-01 2014-05-13 Kudu Industries Inc. System and method for induction heating a helical rotor using a coil
US9661691B2 (en) 2010-02-01 2017-05-23 Schlumberger Lift Solutions Canada Limited System and method for induction heating a helical rotor using a coil
CN112357894A (en) * 2020-11-17 2021-02-12 昆明理工大学 Crude tellurium crystallization purification method

Also Published As

Publication number Publication date
DE1220389B (en) 1966-07-07
NL104013C (en)
US3177051A (en) 1965-04-06
NL253184A (en)

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