TY - JOUR
T1 - Formation and perpendicular magnetic coupling of a1 and l10 copt in copt/tin films on glass substrate
AU - An, Hongyu
AU - Ando, Kazuya
AU - Nakamura, Yoshio
AU - Shi, Ji
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported in part by JSPS KAKENHI under Grant 26220604 and Grant 26103004, in part by Asahi Glass Foundation, in part by the JSPS Core-to-Core Program, and in part by the Spintronics Research Network of Japan. The work of H. An was supported by JSPS Fellowship under Grant 17F17066.
Publisher Copyright:
© 1965-2012 IEEE.
PY - 2019/2
Y1 - 2019/2
N2 - We have studied the structure and the magnetic properties of CoPt films by using TiN spacer layer deposited on a glass substrate. We show that after annealing at 700 °C, a highly (001)-textured L10 CoPt structure has been successfully obtained. However, by increasing the annealing temperature to 800 °C, two magnetic phases A1 CoPt and L10 CoPt are formed despite of the better crystallinity of CoPt than that annealed at 700 °C. By measuring the minor magnetic hysteresis loops of the samples after applying a field cooling in a range from room temperature to 500 °C, we have further studied the magnetic coupling between A1 and L10 CoPt phases in the out-of-plane direction of the films. Our work may provide a piece of information for other studies on the heat-assisted magnetic recording.
AB - We have studied the structure and the magnetic properties of CoPt films by using TiN spacer layer deposited on a glass substrate. We show that after annealing at 700 °C, a highly (001)-textured L10 CoPt structure has been successfully obtained. However, by increasing the annealing temperature to 800 °C, two magnetic phases A1 CoPt and L10 CoPt are formed despite of the better crystallinity of CoPt than that annealed at 700 °C. By measuring the minor magnetic hysteresis loops of the samples after applying a field cooling in a range from room temperature to 500 °C, we have further studied the magnetic coupling between A1 and L10 CoPt phases in the out-of-plane direction of the films. Our work may provide a piece of information for other studies on the heat-assisted magnetic recording.
KW - Heat-assisted magnetic recording (hamr)
KW - L1 Copt
KW - Perpendicular magnetic anisotropy (pma)
KW - Tin
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U2 - 10.1109/TMAG.2018.2864211
DO - 10.1109/TMAG.2018.2864211
M3 - Article
AN - SCOPUS:85051781213
VL - 55
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 2
M1 - 8440674
ER -