Rebuttal of "The multicaloric effect in multiferroic materials"

TL;DR

This paper critically refutes a previous model of the multicaloric effect in multiferroic materials, highlighting inaccuracies and errors in the theoretical approach that undermine its validity for experimental interpretation.

Contribution

It provides a detailed critique of the existing model, clarifying the correct theoretical framework and emphasizing the importance of proper variable distinction.

Findings

Previous model contains fundamental inaccuracies.

Incorrect equations cannot be used for measurements.

Clarification of the proper theoretical approach.

Abstract

The paper refutes the model and claims published in the Solid State Communications [1] as well as elsewhere. The theoretical approach proposed in "The multicaloric effect in multiferroic materials" by Melvin M.~Vopson has a number of inaccuracies and mistakes. The Author of [1] does not pay necessary attention to the range of applicability of the derived equations and confuses the dependent and independent variables. The resulting equations for electrically and magnetically induced multicaloric effects are incorrect and cannot be used for measurement interpretation.