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

Abstract

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.

Authors:
; ; ;
Publication Date:
Research Org.:
Hoseo Univ., Choongnam (KR)
OSTI Identifier:
20000812
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTRONIC STRUCTURE; MAGNETIC PROPERTIES; COBALT ALLOYS; TITANIUM ALLOYS; CRYSTAL STRUCTURE; FERMI LEVEL; ORDER-DISORDER TRANSFORMATIONS

Citation Formats

Rhee, J.Y., Kudryavtsev, Yu.V., Kim, K.W., and Lee, Y.P. Electronic structures and magnetic properties of near-equiatomic Co-Ti alloys. United States: N. p., 1999. Web. doi:10.1109/20.800651.
Rhee, J.Y., Kudryavtsev, Yu.V., Kim, K.W., & Lee, Y.P. Electronic structures and magnetic properties of near-equiatomic Co-Ti alloys. United States. doi:10.1109/20.800651.
Rhee, J.Y., Kudryavtsev, Yu.V., Kim, K.W., and Lee, Y.P. Wed . "Electronic structures and magnetic properties of near-equiatomic Co-Ti alloys". United States. doi:10.1109/20.800651.
@article{osti_20000812,
title = {Electronic structures and magnetic properties of near-equiatomic Co-Ti alloys},
author = {Rhee, J.Y. and Kudryavtsev, Yu.V. and Kim, K.W. and Lee, Y.P.},
abstractNote = {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.},
doi = {10.1109/20.800651},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}