Electronic device using magnetic components

A data storage device comprising:

• a) a disk,
• b) a stylus for writing information to said disk, and
• c) an electric current source connected between said disk and said stylus,
• wherein said disk comprises five layers, said first layer is a non-magnetic conductor, said second layer is a first magnetic conducting material having a fixed magnetic moment, said third layer is a non-magnetic conductor, said fourth layer is a second magnetic conducting material having a changeable magnetic moment and said fifth layer is a conducting, lubricating material and said stylus comprises a body of a non-magnetic conductor terminating in a wedge-shaped structure having magnetic shielding material on both slanted faces of said wedge-shaped structure, said current source being connected between said first layer of said disc and said conductor of said stylus.

A data storage device comprising:

• a) a disk,
• b) a stylus for writing information to said disk, and
• c) an electric current source connected between said disk and said stylus,
• wherein said disk comprises three layers of a first layer of a non-magnetic conductor, a second layer of a first magnetic conducting material having a changeable magnetic moment, and a third layer of a conducting, lubricating material and wherein said stylus comprises a body of a non-magnetic conductor terminating in a wedge-shaped structure having elongated faces terminating in a bottom region, said body being surrounded in said wedge area and thereabove with a layer of a second magnetic conducting material having a fixed magnetic moment and further including a magnetic shielding material on both slanted faces of said wedge-shaped structure, said current source being connected between said first layer of said disc and said layer of said second magnetic conducting material of said stylus.