Question
Download Solution PDFWhich of the following types of materials shows a movement from a weaker region to a stronger region of a non-uniform magnetic field?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFClassification of Magnetic Materials
1.) Diamagnetic Substance:
- Diamagnetic substances are those which develop feeble magnetization in the opposite direction of the magnetizing field.
- Such substances are feebly repelled by magnets and tend to move from stronger to weaker parts of a magnetic field.
- Magnetic susceptibility is small and negative i.e. -1 ≤ K ≤ 0.
- Examples: Bismuth, copper, lead, zinc, etc.
2.) Paramagnetic substance:
- Paramagnetic substances are those which develop feeble magnetization in the direction of the magnetizing field.
- Such substances are feebly attracted by magnets and tend to move from weaker to stronger parts of a magnetic field.
- Magnetic susceptibility is small and positive i.e. 0 < K.
- Examples: Manganese, aluminum, chromium, platinum, etc.
3.) Ferromagnetic substances:
- Ferromagnetic substances are those which develop strong magnetization in the direction of the magnetizing field.
- They are strongly attracted by a magnet and tend to move from the weaker to the stronger part of a magnetic field.
- Magnetic susceptibility is very large and positive i.e. K > 1000
- Examples: Iron, cobalt, nickel, gadolinium, and alloys like alnico.
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