Paramagnetism
A weak form of magnetism in which materials with unpaired electrons are weakly attracted into an external magnetic field.
Governing formula
χ_m = C / T (Curie's Law)
SI unit
Dimensionless (χ_m > 0)
In depth
An external field aligns randomly oriented atomic magnetic dipoles. Induced magnetization vanishes immediately once the external magnetic field is removed.
Examples in the real world
Aluminum, platinum, and liquid oxygen exhibiting weak magnetic attraction when subjected to powerful magnetic fields.