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Ferromagnetic Shape Memory Heusler Materials: Synthesis, Microstructure Characterization and Magnetostructural

Riaz Ahamed Ahamed Khan1, Reza Ghomashchi2, Zonghan Xie3,4

  • 1School of Mechanical Engineering, University of Adelaide, Adelaide 5005, Australia. riazahamed.ahamedkhan@adelaide.edu.au.

Materials (Basel, Switzerland)
|June 13, 2018
PubMed
Summary

This study reviews ferromagnetic NiMnX Heusler alloys, highlighting their multifunctional multiferroic properties. Composition tuning significantly impacts their magnetostructural effects and transition temperatures.

Keywords:
Heusler alloysliquid and solid processingmagnetic/metamagnetic shape memorymagnetocaloricmartensitic transformationmicrostructure

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Area of Science:

  • Materials Science
  • Solid State Physics
  • Magnetism

Background:

  • Ferromagnetic NiMnX Heusler alloys are multifunctional materials exhibiting multiferroic properties.
  • These alloys possess tunable magnetostructural characteristics crucial for advanced applications.

Purpose of the Study:

  • To provide an overview of processing, characterization, and magnetostructural properties of NiMnX Heusler alloys.
  • To explore the influence of synthesis procedures and microstructural factors on alloy properties.

Main Methods:

  • Review of existing literature on NiMnX Heusler alloys.
  • Analysis of processing techniques and characterization methods.
  • Examination of microstructural factors (crystal structure, atomic ordering, grain size) and their impact.

Main Results:

  • Demonstration of how synthesis influences magnetostructural properties.
  • Identification of key microstructural factors affecting alloy behavior.
  • Correlation between composition tuning and martensitic/magnetic transitions.

Conclusions:

  • Composition is a critical factor in controlling magnetostructural effects in NiMnX alloys.
  • Understanding microstructural influences is key to optimizing multifunctional properties.
  • NiMnX Heusler alloys offer significant potential due to their tunable multiferroic nature.