Question

Example for magnetic material used in data storage devices is ___________.

• A. $45$ permalloy
• B. $Cr{O}_2$
• C. $Cu$
• D. Alnico

Answer 1

The correct option is B $Cr{O}_2$

Data storage device is a device for recording information (data). It can had and store information both temporarily and permanently.

Recording is done using the virtual form of energy.

The magnetic material used in such data storage device is $Cr{O}_2$.