Magnetic and Non-Magnetic Materials

Key Notes :

Magnetic Materials:

  • Definition: Materials that are attracted to magnets.
  • Properties:
    • They can be magnetized and attract other magnetic materials.
    • They contain iron, nickel, or cobalt, which are ferromagnetic materials.
    • Examples: Iron, steel, cobalt, nickel.
  • Uses:
    • Magnets in refrigerators, electric motors, and compasses.
    • Magnetic toys and tools.

Non-Magnetic Materials:

  • Definition: Materials that are not attracted to magnets.
  • Properties:
    • Do not contain iron, nickel, or cobalt.
    • Do not show magnetic properties even when placed near a magnet.
  • Examples: Wood, plastic, rubber, glass, paper, aluminum, copper.
  • Uses:
    • Common in everyday items like furniture, electronics, and packaging materials.

Difference Between Magnetic and Non-Magnetic Materials:

  • Magnetic materials attract to magnets, while non-magnetic materials do not.
  • Magnetic materials can be magnetized, while non-magnetic materials cannot.

Types of Magnetic Materials:

  • Ferromagnetic: Strongly attracted to magnets (e.g., iron, steel).
  • Paramagnetic: Weakly attracted to magnets (e.g., aluminum, platinum).
  • Diamagnetic: Repelled by magnets (e.g., graphite, bismuth).

Magnetic Fields:

  • The space around a magnet where its magnetic force can be felt.
  • Magnetic materials are affected by this field, while non-magnetic materials are not.

Magnetization:

  • Magnetic materials can be magnetized when placed in a strong magnetic field.
  • Non-magnetic materials cannot be magnetized.

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