GB1179877A - A Process for the Crucible-free Zone-by-Zone Melting of a Crystalline Rod - Google Patents
A Process for the Crucible-free Zone-by-Zone Melting of a Crystalline RodInfo
- Publication number
- GB1179877A GB1179877A GB05240/67A GB1524067A GB1179877A GB 1179877 A GB1179877 A GB 1179877A GB 05240/67 A GB05240/67 A GB 05240/67A GB 1524067 A GB1524067 A GB 1524067A GB 1179877 A GB1179877 A GB 1179877A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- current
- supporting
- melting
- induction coil
- 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
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
- C30B13/16—Heating of the molten zone
- C30B13/20—Heating of the molten zone by induction, e.g. hot wire technique
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10S117/901—Levitation, reduced gravity, microgravity, space
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10S117/917—Magnetic
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)
Abstract
1,179,877. Zone-melting. SIEMENS A.G. 3 April, 1967 [15 April, 1966], No. 15240/67. Heading B1S. [Also in Division H5] In crucible-free zone-melting of a crystalline rod, the molten zone is supported by the magnetic field of an induction coil supplied with an alternating current wherein the amplitude of the current lying in the frequency range 100 to 300 c/s is less than 5% of the current supplying the supporting field. The rod may be heated by an additional induction coil or by the zone-supporting coil, which may be fed with a low frequency supporting current and a high frequency heating current. The undesired current in the range 100 to 300 c/s is reduced by smoothing the supply voltages of valve or semiconductor generators, or the direct excitation current of machine generators which supply the zone supporting induction coil by conventional filter circuits.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0103207 | 1966-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1179877A true GB1179877A (en) | 1970-02-04 |
Family
ID=7524994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB05240/67A Expired GB1179877A (en) | 1966-04-15 | 1967-04-03 | A Process for the Crucible-free Zone-by-Zone Melting of a Crystalline Rod |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3705789A (en) |
| DE (1) | DE1519888B2 (en) |
| GB (1) | GB1179877A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2356376A1 (en) * | 1973-11-12 | 1975-05-15 | Siemens Ag | PROCESS FOR PRODUCING HOMOGENOUS DOPED SILICON CRYSTALS WITH N-CONDUCTIVITY BY NEUTRON RADIATION |
| US3947533A (en) * | 1974-06-14 | 1976-03-30 | Biomagnetics, International Inc. | Magnetic field expansion and compression method |
| US5003551A (en) * | 1990-05-22 | 1991-03-26 | Inductotherm Corp. | Induction melting of metals without a crucible |
| US5319670A (en) * | 1992-07-24 | 1994-06-07 | The United States Of America As Represented By The United States Department Of Energy | Velocity damper for electromagnetically levitated materials |
| US6596076B1 (en) * | 1998-06-30 | 2003-07-22 | Director-General Of Agency Of Industrial Science And Technology | Apparatus and method for altering the apparent effects of gravity |
| DE10328859B4 (en) * | 2003-06-20 | 2007-09-27 | Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. | Method and apparatus for pulling single crystals by zone pulling |
| US6875966B1 (en) * | 2004-03-15 | 2005-04-05 | Nexicor Llc | Portable induction heating tool for soldering pipes |
| DE102018210317A1 (en) | 2018-06-25 | 2020-01-02 | Siltronic Ag | Method for producing a single crystal from semiconductor material according to the FZ method, device for carrying out the method and semiconductor wafer made of silicon |
-
1966
- 1966-04-15 DE DE19661519888 patent/DE1519888B2/en not_active Withdrawn
-
1967
- 1967-04-03 GB GB05240/67A patent/GB1179877A/en not_active Expired
- 1967-04-13 US US630643A patent/US3705789A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1519888B2 (en) | 1970-04-16 |
| DE1519888A1 (en) | 1969-08-07 |
| US3705789A (en) | 1972-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |