Magnetic Equation of State for Nickel Near Its Curie Point

Abstract

The magnetization-field-temperature ($\sigma -H-T$) behavior of nickel both above and below its Curie point $T_c$ is found to obey an equation of state in which $\frac{\sigma }{{|1-\frac{T}{T_c}|}^{\beta }}$ is uniquely related to $\frac{H}{{|1-\frac{T}{T_c}|}^{\beta +\gamma }}$, where $\beta$ and $\gamma$ are the critical exponents for the temperature dependence of the spontaneous moment and initial susceptibility, respectively.