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RESEARCH PRODUCT
Electronic structure and transport properties of the Heusler compound Co2TiAl
Tanja GrafJiirgen WinterlikClaudia FelserJoachim BarthGerhard H. Fechersubject
DiffractionAcoustics and UltrasonicsCondensed matter physicsChemistryElectronic structureengineering.materialConductivityCondensed Matter PhysicsHeusler compoundSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsThermal transportAb initio quantum chemistry methodsFormula unitengineeringCurie temperaturedescription
The properties of the Heusler compound Co2TiAl were investigated in detail by experimental techniques and theoretical methods. X-ray diffraction measurements indicate that as-cast samples of the compound exhibit the L21 structure with a small amount of B2-type disorder. This leads to a reduced saturation magnetization per formula unit of 0.747 μB. The Curie temperature is approximately 120 K. The transport properties are influenced by the change in the electronic structure at the Curie temperature, as revealed experimentally by conductivity, thermal transport and specific heat measurements. Different theoretical models based on ab initio calculations of the electronic structure are used to explain the experimental observations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-03-30 | Journal of Physics D: Applied Physics |