Ordering temperature of L10-type FePt films reduced by CuO addition |
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Authors: | WB Cui ZD Zhang |
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Institution: | Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China |
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Abstract: | Effects of addition of CuO layers in L10-type FePt thin films are investigated. The ordering temperature of L10-type FePt films can be reduced by CuO addition. The coercivities of 0.78 and 0.82 T are achieved in Pt(10 Å)/Fe(14 Å)/CuO(2 Å)]10 film annealed at 550 °C for 20 min and Pt(10 Å)/Fe(15 Å)/CuO(3 Å)]10 film annealed at 600 °C for 20 min, respectively, and these values are compared to the coercivity of 0.8 T in Pt(10 Å)/Fe(13 Å)]10 film annealed at 650 °C. The thickness of Fe and CuO layers strongly influences the ordering temperature of L10-type FePt and the magnetic properties of the films. The addition of CuO not only brings microstructure and surface morphology changes of FePt film, but also lowers the ordering temperature. |
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Keywords: | Magnetic film Thin film Magnetron-sputtering Ordering |
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