High-throughput direct measurement of magnetocaloric effect based on lock-in thermography technique

Abstract

We demonstrate a high-throughput direct measurement method for the magnetocaloric effect (MCE) by means of a lock-in thermography (LIT) technique. This method enables systematic measurements of the magnetic-field and operation-frequency dependences of the temperature change induced by the MCE. This is accomplished in a shorter time compared with conventional adiabatic temperature measurement methods. The direct measurement based on LIT is free from any possible miscalculations and errors arising from indirect measurements using thermodynamic relations. Importantly, the LIT technique makes simultaneous MCE measurements of multiple materials possible without increasing measurement time, realizing high-throughput investigations of the MCE. By applying this method to Gd, we obtain the MCE-induced temperature change of 1.84 $\pm$ 0.11 K under a modulation field of 1.0 T and modulation frequency of 0.5 Hz at a temperature of 300.5 $\pm$ 0.5 K, offering evidence that the LIT method gives quantitative results.

12 pages, 5 figures

References in corpus (3)

• Elastocaloric effect associated with the martensitic transition in shape-memory alloys
• Thermal imaging of spin Peltier effect
• Direct measurements of the magnetocaloric effect in pulsed magnetic fields: The example of the Heusler alloy Ni${}_{50}$Mn${}_{35}$In${}_{15}$

Cited by in corpus (9)

• Spintronic thermal management
• Direct measurement of electrocaloric effect based on multi-harmonic lock-in thermography
• Local heat emission due to unidirectional spin-wave heat conveyer effect observed by lock-in thermography
• A setup for direct measurement of the adiabatic temperature change in magnetocaloric materials
• High-throughput imaging measurements of thermoelectric figure of merit
• Quantitative noncontact measurement of thermal Hall angle and transverse thermal conductivity by lock-in thermography
• High-throughput development of flexible amorphous materials showing large anomalous Nernst effect via automatic annealing and thermoelectric imaging
• Insight into magnetocaloric properties of Mn2Nb molecular magnet by relaxation calorimetry: A comprehensive case study
• Low-temperature magnetic-field-driven thermal oscillator based on metal-superconductor joint