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Definition
editThe magnetization of a material is defined as its magnetic moment per unit volume.[1]: 14 [2]: 1 Like the magnetic moment, it is a vector quantity and function of position, e.g., M(r). The total magnetic moment of a body is given by the integral over its volume:[3]: 411
Units
editAs a magnetic moment per unit volume, magnetization is represented by the symbol M and has units of amperes per meter (A/m) in SI units (emu/cm3 in cgs units). Referred to as the magnetic polarization or intensity (J or I), it is measured in teslas in the SI system (but still emu/cm3 in cgs). It can also be given as magnetic moment per unit mass (M or σ) with units A m2 / kg in SI units.[4]
References
edit- ^ Spaldin, Nicola A. (2011). Magnetic materials : fundamentals and applications (2nd ed.). Cambridge: Cambridge University Press. ISBN 9780521886697.
- ^ Aharoni, Amikam (1996). Introduction to the theory of ferromagnetism (Reprinted ed.). Oxford: Clarendon Press. ISBN 0198517912.
- ^ Zangwill, Andrew (2013). Modern electrodynamics. Cambridge: Cambridge University Press. ISBN 9780521896979.
- ^ "Magnetic Units". IEEE Magnetics.