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Question

What type of magnetic material is normally used in bubble memories?

A
Magnetic core
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B
Cobalt
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C
Garnet
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D
Metallic
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E
None of the above
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Solution

The correct option is C Garnet

Garnet is a type of magnetic material is normally used in bubble memories.

Bubble memory is a type of non-volatile computer memory that uses a thin film of a magnetic material to hold small magnetized areas, known as bubbles or domains, each storing one bit of data.

Yttrium iron garnet (YIG) is a ferrite material with excellent magnetic and magneto-electric properties that make it the best magnetic material for high frequency applications. Thus, the magnetic moment of the garnet is a result of the surplus iron ion from d-site.

magnetic bubble. : a tiny movable magnetized cylindrical volume in a thin magnetic material that along with other like volumes can be used to represent a bit of information (as in a computer)


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