Effect of Ta addition on magnetic properties of (Fe sub(45Pt) sub(5)5) sub(1-) sub(x)-Ta sub(x thin films)

It was studied that FePt-Ta thin films prepared on MgO (1 0 0) buffer-layer by DC/RF magnetron co-sputtering have shown better magnetic properties and micro structural improvement. The Ta-doped FePt-Ta films indicate somewhat differences in micro structural ordering and the aspect of grain growth af...

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Bibliographic Details
Published in:Microelectronic engineering 2011-05, Vol.88 (5), p.589-592
Main Authors: Jang, Sung-Uk, Kim, Ji-Hong, Jin, Sangho, Hyun, Seungmin, Lee, Hak-Joo, Lee, Hwan-Soo, Kwon, Soon-Ju
Format: Article
Language:English
Subjects:
Annealing
Coercive force
Direct current
Ferrous alloys
Magnetic properties
Order disorder
Tantalum
Thin films
Online Access:Get full text
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Summary:It was studied that FePt-Ta thin films prepared on MgO (1 0 0) buffer-layer by DC/RF magnetron co-sputtering have shown better magnetic properties and micro structural improvement. The Ta-doped FePt-Ta films indicate somewhat differences in micro structural ordering and the aspect of grain growth after annealing. With respect to magnetic property, the sample having 30% increased coercivity was obtained after a heat treatment at 700 [deg]C. In particular the addition of Ta (5.5%) enhances the L1 sub(0 ordering of FePt at relatively high temperature (above 500 [deg]C).)
ISSN:0167-9317
DOI:10.1016/j.mee.2010.06.018