TY - JOUR
T1 - Surface morphologies and magnetic properties of Fe and Co magnetic thin films on polyethylene naphthalate organic substrates
AU - Kaiju, Hideo
AU - Abe, Taro
AU - Kondo, Kenji
AU - Ishibashi, Akira
N1 - Funding Information:
This research has been partially supported by the Management Expenses Grants for National Universities Corporations and a Grant-in-Aid for Young Scientists from The Ministry of Education, Culture, Sports, Science and Technology (MEXT), Precursory Research for Embryonic Science and Technology program from the Japan Science and Technology Agency (JST), and a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS). The authors would like to express their sincere appreciation to Dr. M. Hirasaka of Teijin Ltd., Research Manager K. Kubo of Teijin DuPont Films Japan, Ltd., Professor Y. Hirotsu and Associate Professor M. Ishimaru at Osaka University, Professor M. Yamamoto, Assistant Professor K. Matsuda, and M. Takei at Hokkaido University for their cooperation and helpful discussions.
PY - 2012/4/1
Y1 - 2012/4/1
N2 - We have studied the surface morphologies and magnetic properties of Fe and Co thin films evaporated on polyethylene naphthalate (PEN) organic substrates toward the fabrication of spin quantum cross devices. As a result, the surface roughnesses of Co (6.1 nm)/PEN and Co (12 nm)/PEN are as small as 0.1 and 0.09 nm, respectively, corresponding to less than one atomic layer, in the same scanning scale as the thickness. As for the magnetic properties, the coercive force of the Co/PEN shows the constant value of 2 kA/m upon decreasing the Co thickness from 35 to 10 nm, and it increases up to 7 kA/m upon decreasing the Co thickness from 10 to 5 nm. It decreases when the Co thickness is less than 5 nm. These results can be explained by the competition between the shape magnetic anisotropy and the induced magnetic anisotropy.
AB - We have studied the surface morphologies and magnetic properties of Fe and Co thin films evaporated on polyethylene naphthalate (PEN) organic substrates toward the fabrication of spin quantum cross devices. As a result, the surface roughnesses of Co (6.1 nm)/PEN and Co (12 nm)/PEN are as small as 0.1 and 0.09 nm, respectively, corresponding to less than one atomic layer, in the same scanning scale as the thickness. As for the magnetic properties, the coercive force of the Co/PEN shows the constant value of 2 kA/m upon decreasing the Co thickness from 35 to 10 nm, and it increases up to 7 kA/m upon decreasing the Co thickness from 10 to 5 nm. It decreases when the Co thickness is less than 5 nm. These results can be explained by the competition between the shape magnetic anisotropy and the induced magnetic anisotropy.
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U2 - 10.1063/1.3670609
DO - 10.1063/1.3670609
M3 - Article
AN - SCOPUS:84861752341
SN - 0021-8979
VL - 111
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 7
M1 - 07C104
ER -