Determination of magnon mass of neodymium magnet by temperature dependence of spontaneous magnetization

Abstract

The effective mass of a magnon in a neodymium magnet is evaluated using Bloch temperature dependence of spontaneous magnetization. We used the Hall effect magnetometer and thermo-couple thermometer for measuring of the temperature of the water in which the encapsulated commercial magnet is immersed. The experiment can be repeated in every school and methodological remarks for experimental data processing are given with great detail and attention. The purpose of the paper is to illustrate the simple relation between the quantum spectrum of magnons and the easily measured magnetic field of a permanent magnet.

Determination of effective magnon mass of neodymium magnet by temperature dependence of spontaneous magnetization

“…And for Nd-magnet to be able to analyze subtle origins of the deviation related to magnetic moment, for example. Unabridged version of the current paper will be presented in the Cornell University repository arXiv [38].…”