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Elastocaloric-effect-induced adiabatic magnetization in paramagnetic salts due to the mutual interactions
Lucas Squillante1, Isys F Mello1, Antonio C Seridonio2
1IGCE - Physics Department, São Paulo State University (Unesp), Rio Claro, SP, 13506-900, Brazil.
Scientific Reports
|May 4, 2021
Summary
Adiabatic compression of paramagnets at low temperatures induces magnetization without a magnetic field, driven by magnetic moment interactions. This study explores this subtle elastocaloric effect and its potential applications.
Area of Science:
- Condensed Matter Physics
- Thermodynamics
- Magnetism
Background:
- The elastocaloric effect, a temperature change due to adiabatic stress, is known and explored for refrigeration.
- Adiabatic magnetization typically requires an external magnetic field.
Purpose of the Study:
- To demonstrate adiabatic magnetization in real paramagnets at low temperatures (mK) without an applied magnetic field.
- To investigate the underlying many-body physics driven by dipolar interactions.
- To present experimental setups for observing this effect and discuss future research directions.
Main Methods:
- Experimental demonstration of adiabatic magnetization in paramagnets under adiabatic compression.
- Utilizing low-temperature (mK) environments.
- Theoretical considerations of dipolar interactions and their role.
Main Results:
- Real paramagnets exhibit magnetization when compressed adiabatically at low temperatures, even without an external magnetic field.
- This effect is attributed to the mutual interactions between magnetic moments.
- Experimental setups were successfully designed and implemented.
Conclusions:
- Adiabatic magnetization in paramagnets is achievable via mechanical compression at low temperatures, driven by many-body interactions.
- This finding opens avenues for novel magnetic refrigeration techniques and fundamental physics research.
- Further investigations in Bose-Einstein condensates and spin-ice systems are proposed.
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