L10 Ordering of FePtB Films on a Thin MgO Layer
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概要
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A strong perpendicular magnetic anisotropy is obtained in MgO/FePtB/Ti films. After high-temperature (600 °C) annealing, an amorphous FePtB layer on a thin polycrystalline MgO layer is transformed into an L10 ordered phase with a long range ordering parameter of 0.9 and an effective magnetic anisotropy of $1.29\times 10^{7}$ erg/cm3. The depth profile of the atomic concentration reveals that the Ti capping layer absorbs boron from the FePtB layer during the annealing. The high-resolution electron microscopy analysis shows that the crystallized FePtB layer has an epitaxial relationship with the underlying MgO layer.
- 2011-02-25
著者
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Min Byoung-chul
Korea Institute Of Science And Technology (kist)
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Shin Kyung-Ho
Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea
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Choi Gyung-Min
Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea
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Min Byoung-Chul
Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea