Superparamagnetism
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High Quality Content by WIKIPEDIA articles! Superparamagnetism is a form of magnetism, which appear in small ferromagnetic or ferrimagnetic nanoparticles. In small enough nanoparticles, magnetization can randomly flip direction under the influence of temperature. The typical time between two flips is called the Néel relaxation time. In the absence of external magnetic field, when the time used to measure the magnetization of the nanoparticles is much longer than the Néel relaxation time, their magnetization appears to be in average zero : they are said to be in the superparamagnetic state. In this state, an external magnetic field is able to magnetize the nanoparticles, similarly to a paramagnet. However, their magnetic susceptibility is much larger than the one of paramagnets.
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GarantieWeitere Informationen
- Allgemeine Informationen
- GTIN 09786130519858
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Genre Physik & Astronomie
- EAN 9786130519858
- Format Kartonierter Einband
- Titel Superparamagnetism
- Herausgeber Betascript Publishing
- Anzahl Seiten 88
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