Diamagnetic magnetocaloric effect due to a transversal oscillating magnetic field

TL;DR

This paper investigates the magnetocaloric effect in a diamagnetic material influenced by a static magnetic field and a transversal oscillating field, revealing potential for non-mechanical magnetocaloric devices.

Contribution

It demonstrates that the magnetocaloric potentials from a static field change are equivalent to those from a change in oscillating field frequency, enabling new device designs.

Findings

Magnetocaloric potentials are identical for changes in static field and oscillating frequency.

Potential for designing magnetocaloric devices without moving parts.

Changing frequency offers a simpler alternative to mechanical field adjustments.

Abstract

The present Letter describes the magnetocaloric effect of a diamagnetic material with a magnetic field $B_\parallel$ along the $z$ axis and a transversal and oscillating field $B_\perp (\ll B_\parallel)$ parallel to the $x-y$ plane. We show that the magnetocaloric potentials due to a change in $B_\parallel$ is the same as those due to a change in the frequency of $B_\perp$. These results raise the possibility of building magnetocaloric devices without moving parts, since changing frequency is a simple electronic issue, while changing the field from permanent magnets depends on mechanical aspects.