Magnetic properties of co-sputtered Tb-Co2FeAl films with perpendicular anisotropy |
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Authors: | XQ LiXG Xu SQ YinDL Zhang J MiaoY Jiang |
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Institution: | State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract: | We present a systematic study on magnetic properties of co-sputtered Tb-Co2FeAl (TCFA) films. The TCFA films with suitable Tb content have perpendicular magnetic anisotropy (PMA). The PMA deteriorates with both decreasing film thickness and high temperature annealing. Under a certain thickness, the perpendicular coercivity of the TCFA films with PMA can be reduced down to 60 Oe, which is comparable with normal soft ferromagnets. After annealing at 100 °C, a large remanence squareness of 0.95 is observed in the TCFA film with 33% Tb and a thickness of 30 nm. |
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Keywords: | Perpendicular magnetic anisotropy Heusler alloy |
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