Diamagneticparamagnetic And Ferromagnetic Materialsmagnetic Field Of The Earth
Diamagnetic Materials:
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- Repelled by magnetic fields.
- Relative permeability less than 1.
Examples: Copper, silver, gold, bismuth.
Paramagnetic Materials:
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- Attracted to magnetic fields.
- Relative permeability greater than 1.
Examples: Aluminum, platinum, oxygen. Ferromagnetic Materials:
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- Strongly attracted to magnetic fields and retain magnetism after removal of the field.
- Very high relative permeability.
Examples: Iron, nickel, cobalt, gadolinium.Magnetic Field of the Earth:
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- Generated by molten iron movement in the Earth's outer core.
- Dipole field with two magnetic poles (North and South Poles).
- Protects Earth from harmful solar radiation.
