Abstract
The Co2YSi (Y = Ti, V, Cr, Mn, Fe, Co, Ni) Heusler alloys can manifest the properties of half-metallic ferromagnets. These compounds are promising materials for spintronics since almost 100 % spin polarization of charge carriers can be realized at room temperature. We measured the electroresistivity, magnetic and galvanomagnetic properties of the Co2YSi (Y = Ti, V, Cr, Mn, Fe, Co, Ni) Heusler alloys from 4.2 K to 300 K and in magnetic fields up to 100 kOe. The type, concentration and mobility of charge carriers were estimated. The Y-component variation in the Co2YSi Heusler alloys is found to affect strongly the number of current carriers and alter the electronic band structure near the Fermi level EF and, consequently, the electronic transport and magnetic properties of the Co2YSi (Y = Ti, V, Cr, Mn, Fe, Co, Ni) Heusler alloys.
Highlights
The development of modern nanoelectronics and spintronics requires the search and creation of new magnetic materials with high spin polarization of charge carriers
The Co2YSi (Y = Ti, V, Cr, Mn, Fe, Co, Ni) Heusler alloys can manifest the properties of half-metallic ferromagnets
These compounds are promising materials for spintronics since almost 100 % spin polarization of charge carriers can be realized at room temperature
Summary
Yu A Perevozchikova, A A Semiannikova, P B Terentev, M Eisterer, P S Korenistov and V V Marchenkov.
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