Effect of Ta addition on magnetic properties of (Fe45Pt55)1−x–Tax thin films

✍ Scribed by Sung-Uk Jang; Ji-Hong Kim; Sangho Jin; Seungmin Hyun; Hak-Joo Lee; Hwan-Soo Lee; Soon-Ju Kwon

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 622 KB
• Volume: 88
• Category: Article
• ISSN: 0167-9317
• DOI: 10.1016/j.mee.2010.06.018

✦ Synopsis

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 °C. In particular the addition of Ta (5.5%) enhances the L1 0 ordering of FePt at relatively high temperature (above 500 °C).