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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
First order magneto-structural phase transition and associated multi-functional properties in magnetic solids
1Magnetic and Superconducting Materials Section, Materials and Advanced Accelerator Sciences Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India. sbroy@rrcat.gov.in
Summary
First-order magneto-structural phase transitions in magnetic solids unlock multi-functional properties like giant magnetoresistance. Understanding transition dynamics aids in optimizing these properties and minimizing energy loss.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- First-order phase transitions are crucial in magnetic solids.
- These transitions often exhibit multi-functional properties.
Purpose of the Study:
- To explore the relationship between first-order magneto-structural phase transitions and multi-functional properties.
- To analyze disorder-influenced transition characteristics and their impact on material properties.
Main Methods:
- Investigated various classes of magnetic solids exhibiting first-order phase transitions.
- Analyzed characteristic features like supercooling, superheating, phase-coexistence, and metastability.
- Examined magneto-elastic coupling and its role in the transition process.
Main Results:
- First-order magneto-structural phase transitions are linked to giant magnetoresistance, magnetocaloric effect, and magnetostriction.
- Disorder influences transition dynamics, leading to phenomena like metastability.
- Magneto-elastic coupling is identified as a key factor.
Conclusions:
- Optimizing first-order phase transitions can fine-tune multi-functional properties.
- Minimizing thermomagnetic hysteresis loss is essential for practical applications.
- Analogies exist with phase transitions in dielectric materials and superconductors.
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