What is the melting of the zone?

The melting of the

zone is crystal cleaning, especially those used in semiconductors that use heat to push dirt from the top of the crystal to the bottom of the crystal. When the crystal is heated, the dirt is attracted to the bottom of the crystal and the bottom is cut off, leaving behind the cleaned sample. There are two ways to melt the zones, with the thermal zone either stationary or moving; Both are similar results. The zone refining is the process of melting the procedure several times until the crystal is completely purified.

To start melting the zone, the crystal is placed in a cylindrical crucible, with seed crystals from above. The seed cryst is the main part that needs to be cleaned, although some other crystals will also be cleaned. Then a furnace with a narrow thermal zone near the center is prepared and the crystal is slowly exposed to the thermal zone.

There are two main methods for carrying out the melting process. In the Bridgman method, the hot zone moves against the crucible, while the cup is stationary. MethodAnd Stockbarger is the other way around, while the crucible moves through the thermal zone. While complete opposites, they both do the same.

When the crystal is exposed to the thermal zone, it melts. This allows dirt in the crystal to move freely and tends to move towards the cooler part that does not pass through the thermal zone. In order for all impurities to move, the crystal heats up very slowly until the cleanliness draws into the base of the crystal. The lower part of the crystal is settled and leaves behind the cleaned crystal.

In order to ensure that the melting of the zone is successful, the process called the refine zone is used. This is the same as melting the zone, but the crystal is cleaned several times. By doing it several times to the same crystal, the workers can be sure that the crystal is completely free of dirt.

This process of cleaning is performed primarily for crystals that are used as semiconductors but can also be used in otherthe applications. The semiconductors are pieces used in mechanical engineering that have conductivity between the conductor and the insulator. If the impurities remain in the crystal, they would interfere with the electricity flow, so that the crystal either too conductive or insufficiently conductive.