Relation between the specific heat and susceptibility of an antiferromagnet

Abstract

Abstract It is shown by a general theoretical argument that the variation of the magnetic specific heat of a ‘simple’ antiferromagnet, in particular the singular behaviour in the region of the transition, should be closely similar to the behaviour of the function ∂(χT)∂T, where χ is the zero-field susceptibility. This conclusion is compared with the experimental results for MnO and MnF2 and its general implications for the shape of the susceptibility curve near the transition are discussed.