Explain ferromagnetic, dimagnetic,paramagnetic?with example
Answers
Ferromagnetic materials have some unpaired electrons so their atoms have a net magnetic moment. They get their strong magnetic properties due to the presence of magnetic domains. ... Iron, nickel, and cobalt are examples of ferromagnetic materials.
In other words, an atom could have 10 paired (diamagnetic) electrons, but as long as it also has one unpaired (paramagnetic) electron, it is still considered a paramagnetic atom. Just as diamagnetic atoms are slightly repelled from a magnetic field, paramagnetic atoms are slightly attracted to a magnetic field.
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ferromagnetic: (of a body or substance) having a high susceptibility to magnetization, the strength of which depends on that of the applied magnetizing field, and which may persist after removal of the applied field. This is the kind of magnetism displayed by iron, and is associated with parallel magnetic alignment of neighbouring atoms.
ex. iron, cobalt, nickel
dimagnetic: (of a substance or body) tending to become magnetized in a direction at 180° to the applied magnetic field.
ex. copper ,gold ,antimony, silver, lead, silicon, mercury, water, air, hydrogen, nitrogen, bismuth etc
paramagnetic: ( of a substance or body) very weakly attracted by the poles of a magnet, but not retaining any permanent magnetism.
ex. aluminium ,platinum, manganese, chromium ,sodium, calcium, lithium, tungsten, niobium, copper chloride ,crown glass, oxygen etc.