A low power zone-refining system for semiconductor materials Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/3j3336141

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  • This paper presents an investigation of the power needs and impedance-matching techniques involved when heating small charges of relatively high-resistivity semiconductor materials. Topics of discussion also include a brief section on the theoretical basis for zone refining, relative merits of resistance and induction heating, travel mechanism requirements, and work coil design. Considerable emphasis is placed on the efficiency of coupling between the induction heater and the load. Different methods of coupling the power into loads of silicon and germanium are indicated. The discussion on coupling centers around two work coil designs, a single-turn coil and impedance-matching transformer, and a five-turn coil, which is connected in series with the tank-circuit coil. An induction heater capable of delivering 4 kw output power was found sufficient for melting a zone 2 cm long in a 1.5 cm diameter ingot. The system developed is capable of zone refining, zone leveling, or crystal growing with either silicon or germanium.
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  • File scanned at 300 ppi using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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  • description.provenance : Rejected by Patricia Black(patricia.black@oregonstate.edu), reason: Replace on 2014-05-30T15:37:42Z (GMT)
  • description.provenance : Submitted by Georgeann Booth (gbscannerosu@gmail.com) on 2014-05-30T15:48:39Z No. of bitstreams: 1 ChristensenGerald1964.pdf: 1779959 bytes, checksum: befbf27fae39cd6a93f802654d0ec7ce (MD5)
  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-05-30T15:53:17Z (GMT) No. of bitstreams: 1 ChristensenGerald1964.pdf: 1779959 bytes, checksum: befbf27fae39cd6a93f802654d0ec7ce (MD5)
  • description.provenance : Made available in DSpace on 2014-06-02T21:46:31Z (GMT). No. of bitstreams: 1 ChristensenGerald1964.pdf: 1779959 bytes, checksum: befbf27fae39cd6a93f802654d0ec7ce (MD5) Previous issue date: 1963-09-10
  • description.provenance : Submitted by Georgeann Booth (gbscannerosu@gmail.com) on 2014-05-29T22:08:28Z No. of bitstreams: 1 ChristensenGerald1964.pdf: 1760673 bytes, checksum: 8030998b76ac4ea5e6abe6be0c3e8bf1 (MD5)
  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-06-02T21:46:31Z (GMT) No. of bitstreams: 1 ChristensenGerald1964.pdf: 1779959 bytes, checksum: befbf27fae39cd6a93f802654d0ec7ce (MD5)

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