Suppression of growth-induced perpendicular magnetic anisotropy in Co-Pt alloys by trace amounts of Si

Citation
Al. Shapiro et al., Suppression of growth-induced perpendicular magnetic anisotropy in Co-Pt alloys by trace amounts of Si, APPL PHYS L, 75(26), 1999, pp. 4177-4179
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
75
Issue
26
Year of publication
1999
Pages
4177 - 4179
Database
ISI
SICI code
0003-6951(199912)75:26<4177:SOGPMA>2.0.ZU;2-H
Abstract
(CoxPt1-x)(1-y)Si-y alloys with Si content from 1 to 20 at. % have been gro wn over a range of growth conditions. Co-deposition of even trace amounts o f Si with Co-Pt alloys causes the growth-induced magnetic anisotropy and ch emical clustering found in these vapor-deposited alloy films to decrease or vanish. It also causes significant reduction in grain size. Addition of 5 at. % Si eliminates anisotropy completely. Addition of 1 at. % Si produces a film with magnetic properties identical to pure Co-Pt alloys grown at low er deposition temperatures. We suggest this suppression of anisotropy and r elated effects are due to a decrease in surface mobility during growth in t he presence of even trace amounts of Si. (C) 1999 American Institute of Phy sics. [S0003-6951(99)02352-9].