Description of a Differential Setup for Relaxation Microcalorimetry

TL;DR

This paper presents a newly assembled microcalorimetry setup capable of measuring specific heat in milligram samples under magnetic fields up to 9 Tesla, enabling detailed analysis of phase transitions influenced by magnetic fields.

Contribution

The paper details the design and successful implementation of a differential relaxation microcalorimetry setup with high magnetic field capability for precise specific heat measurements.

Findings

Instrument can measure specific heat in milligram samples under 9 Tesla magnetic fields

Allows calculation of adiabatic temperature changes during phase transitions

Provides reliable data on magnetic field effects on phase transitions

Abstract

A specific heat measuring instrument, with the capacity for the application of magnetic fields up to 9 Tesla, resorting to microcalorimetry chips from the company Xensor Integration, has been successfully assembled and its functioning specifications are reported in the current paper. With this instrument is it possible to perform specific heat measurements with applied magnetic fields up to 9 Tesla in milligram samples. This offers our group the possibility to calculate the actual adiabatic temperature change of a material, as well as providing reliable and precise information on any phase transition that may be influenced by the application of a magnetic field.