Transcription of 8 Magnetism - TU Berlin
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8 Magnetism - TU Berlin
8 IntroductionThe topic of this part of the lecture deals are the magnetic properties of materials. Mostmaterials are generally considered to be non-magnetic , which is a loose way of sayingthat they become magnetized only in the presence of an applied magnetic field (dia- andparamagnetism). We will see that in most cases these effects are very weak, and themagnetization is lost, as soon as the external field is removed. Much more interesting(also from a technological point of view) are those materials, which not only have a largemagnetization, but also retain it even after the removal of the external field.
paramagnetism). We will see that in most cases these effects are very weak, and the magnetization is lost, as soon as the external field is removed. Much more interesting (also from a technological point of view) are those materials, which not only have a large
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