20
Magnetic Properties
20.1 INTRODUCTION
From the beginning of civilization magnet has been in the service of mankind as magnetite ore or lodestone. But for the past 100 years, numerous applications of magnetization and magnetic materials have come up. In the more recent years, development of new magnetic materials has played important role in computer revolution.
Large powerful magnets are crucial for advanced technologies as magnetic levitation trains float above tracks using strong magnets. Powerful magnetic fields are used in nuclear magnetic resonance as a very useful diagnostic instrument used by doctors.
The magnetic forces are produced by the motion of charged particles such as electrons, which indicate close relationship between magnetism ...
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