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Updated: Nov 21, 2025
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Half metallicity in Cr substituted Fe2TiSn
S Chaudhuri1, D Salas2, V Srihari3
1Department of Physics, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore, 453552, India.
Researchers tailored the band structure of Fe2TiSn by adding chromium, achieving a half-metallic ferromagnetic state. This controlled introduction of chromium in full Heusler alloys shows promise for spintronics applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid State Chemistry
Background:
- Band structure tailoring is key for achieving half-metallic electronic ground states.
- Full Heusler alloys offer a promising platform for exploring novel electronic properties.
Purpose of the Study:
- To investigate the effects of chromium substitution on the electronic, magnetic, and transport properties of Fe2TiSn.
- To achieve a half-metallic ferromagnetic ground state in Fe2CrxTi1-xSn alloys.
Main Methods:
- Synchrotron X-ray diffraction for structural phase purity analysis.
- Extended X-ray absorption fine structure spectroscopy for local crystal structure studies.
- Resistivity and magnetoresistance measurements to probe electronic transport properties.
Main Results:
- Phase pure L21 cubic structures were obtained for Cr concentrations (x) up to 0.25.
- Chromium inclusion induced localized magnetic moments and ferromagnetic interactions, dominating for x = 0.25.
- Resistivity and magnetoresistance data indicated a half-metallic ground state.
Conclusions:
- Band structure tailoring via chromium substitution in Fe2TiSn successfully induces half-metallicity.
- The study highlights the potential of Fe2CrxTi1-xSn alloys for spintronics devices.
- Changes in 3d-5p orbital hybridization support the observed half-metallic properties.
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