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Electronic Structure of Co-Ni-Ga Heusler Alloys Studied by Resonant Photoemission.
- Source :
- AIP Conference Proceedings; 2014, Vol. 1591, p1158-1160, 3p, 3 Graphs
- Publication Year :
- 2014
-
Abstract
- The electronic structures of Co<subscript>2.01</subscript>Ni<subscript>1.05</subscript>Ga<subscript>0.94</subscript> and Co<subscript>1.76</subscript>Ni<subscript>1.46</subscript>Ga<subscript>0.78</subscript> Heusler alloys have been investigated by resonant photoemission spectroscopy across the 3p-3d transition of Co and Ni. For the Ni excess composition Co<subscript>1.76</subscript>Ni<subscript>1.46</subscript>Ga<subscript>0.78</subscript>, the valence band peak shows a shift of 0.25 eV as compared to the near stoichiometric composition Co<subscript>2.01</subscript>N1<subscript>1.05</subscript>Ga<subscript>0.94</subscript>. Also an enhancement is observed in the Ni related satellite features in the valence band for the Ni excess composition. Due to hybridization of Co and Ni 3d states in these systems, the Co and Ni 3p-3d resonance energies are found to be higher as compared to Co and Ni metals. Theoretical first principle calculation is performed to understand the features in the valence band and the shape of the resonance profile. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 1591
- Database :
- Complementary Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 95776326
- Full Text :
- https://doi.org/10.1063/1.4872888