Pierre curie experimentally found that magnetization of a paramagnetic sample is directly proportional to the magnitude of applied external magnetic field \(left( {{overrightarrow{B}}_{ext}} right)\) and inversely proportional to Temperature (T)
\(Mpropto {{overrightarrow{B}}_{ext}}\) \(Mpropto frac{1}{T}\) \(M=Cfrac{{{overrightarrow{B}}_{ext}}}{T}…(1)\)This is known as curie’s law
C – is curie constant
\({{overrightarrow{B}}_{ext}}\) – is applied external fieldT – Temperature
Curve: For a paramagnetic material M/Mex versus Bext/T
