Electronic structures and magnetic properties of near-equiatomic Co-Ti alloys

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/20.800651· OSTI ID:20000812

Rhee, J Y; Kudryavtsev, Yu V; Kim, K W; Lee, Y P

The magnetic properties of near-equiatomic Co-Ti alloys were studied by using the first-principles electronic structure calculations. A formation of the antistructure Co atom and its cluster plays an important role to determine the ferromagnetic behavior of the disordered equiatomic alloy or off-stoichiometric Co-rich alloys. A small but considerable amount of charge transfer from the Ti to Co atom is crucial to the structural stability and the magnetic properties of the alloy system. A sharp peak in the calculated density-of-states curve near the Fermi level grows as the Ti concentration decreases, indicating a strong localization of the states, which gives a better understanding of the change in physical properties upon an order{r{underscore}arrow}disorder transition.

• Research Organization: Hoseo Univ., Choongnam (KR)
• OSTI ID: 20000812
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers) Journal Issue: 5Pt2 Vol. 35; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
FERMI LEVEL
MAGNETIC PROPERTIES
ORDER-DISORDER TRANSFORMATIONS
TITANIUM ALLOYS