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Effects of process temperature on the microstructure and magnetic properties of electrodeposited Co-Pt alloy thin films

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Co-Pt alloy thin films were galvanostatically electrodeposited on Ru (30 nm)/Ta (5 nm)/Si (100) substrates from a amino-citrate based electrolyte. We used Ru(0002)-oriented buffer layers to control the crystallinity and orientation of the Co-Pt alloy thin films. The effect of solution temperature on the microstructure and magnetic properties of the Co-Pt alloy thin film was investigated. The samples were characterized by EDS, FESEM, XRD diffractometer using Cu Kα radiation. The magnetic properties of these films were analyzed by a VSM and torque magnetometer. The Co-Pt alloy thin films were exhibited very high out-of-plane coercivity and squareness of the multilayer were 6527 Oe and 0.93, respectively, without heat treatment.

Abstract

Co-Pt alloy thin films were galvanostatically electrodeposited on Ru (30 nm)/Ta (5 nm)/Si (100) substrates from a amino-citrate based electrolyte. We used Ru(0002)-oriented buffer layers to control the crystallinity and orientation of the Co-Pt alloy thin films. The effect of solution temperature on the microstructure and magnetic properties of the Co-Pt alloy thin film was investigated. The samples were characterized by EDS, FESEM, XRD diffractometer using Cu Kα radiation. The magnetic properties of these films were analyzed by a VSM and torque magnetometer. The Co-Pt alloy thin films were exhibited very high out-of-plane coercivity and squareness of the multilayer were 6527 Oe and 0.93, respectively, without heat treatment.

참고문헌 (8)

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  2. R. Skomski, "Permanent magnetism", Bristol U.K. Institute Physics, 5 (1999)
  3. H.S. Nalwa, "Magnetic nanostructures", pp.68~ (2002), American Scientific Publisher
  4. Y. Yamada, "Magnetic properties of electron beam evaporated CoPt alloy thin films", IEEE Trans. Magn, 34, pp.343~ (1998)
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  7. G. Zangari, "Magnetic properties of electroplated Co-Pt films", J. Magn. Magn. Mater, 157-158, pp.256~ (1996)
  8. I. Zana, "Magnetic properties of electrodeposited Co-Pt thin films with very high perpendicular magnetic anisotropy", J. Magn. Magn. Mater, 272- 276, pp.1698~ (2004)

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