Silicon wafers

Which method applies a magnetic field to the crucible in the CZ method to suppress melt convection and control oxygen concentration and other properties?

  1. AFZ method
  2. BMCZ method (magnetic-field-applied CZ)
  3. CBridgman method
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Answer: B. MCZ method (magnetic-field-applied CZ)

Molten silicon conducts electricity, so a magnetic field suppresses convection in the melt. In the MCZ method, this allows control of the oxygen incorporated from the crucible and improves crystal uniformity. It is used to grow large-diameter CZ crystals.

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More Silicon wafers questions

  1. Which conditions are mainly adjusted during pulling to keep the diameter of a silicon single-crystal ingot constant?
  2. Which is one reason SiC wafers are difficult and expensive to manufacture?
  3. Roughly what size in inches is a silicon wafer 300 mm in diameter commonly called?
  4. What is the cylindrical block of single-crystal silicon grown by the CZ method or similar, before it is cut into wafers, called?
  5. What is the main reason silicon wafers are round?