Effect of TiON-MgO intermediate layer on microstructure and magnetic properties of L1 sub(0) FePt-C-SiO sub(2) films

The microstructure and magnetic properties of L1 sub(0) FePt-C-SiO sub(2) films grown on TiON-MgO intermediate layer were studied. TiON-MgO layer was deposited by co-sputtering TiN and MgO-TiO sub(2) targets at 380 degree C. With increasing MgO-TiO sub(2) doping concentration, the contact angle betw...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2016-11, Vol.417, p.203-207
Main Authors: Denga, J Y, Dongb, K F, Pengc, Y G, Juc, G P, Hud, J F, Chowa, G M, Chena, J S
Format: Article
Language:English
Subjects:
Coercive force
Coercivity
Ferrous alloys
Iron compounds
Magnetic properties
Magnetism
Microstructure
Titanium dioxide
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Summary:The microstructure and magnetic properties of L1 sub(0) FePt-C-SiO sub(2) films grown on TiON-MgO intermediate layer were studied. TiON-MgO layer was deposited by co-sputtering TiN and MgO-TiO sub(2) targets at 380 degree C. With increasing MgO-TiO sub(2) doping concentration, the contact angle between FePt grains with intermediate layer gradually increased, and it was close to 90 degree when the volume percentage of MgO-TiO sub(2) reached 30%. At this condition, a high out-of-plane coercivity of 19.1 kOe was obtained, while the opening-up of in-plane M-H loop was very narrow. Moreover, it was found that the out-of-plane coercivity can be further improved to 21.6 kOe, by slightly increasing the percentage of MgO-TiO sub(2) to 35 vol%.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2016.05.096