In-field magnetic force microscope study of dipolar interaction in an ideally ordered Co nanorod array fabricated using nanoimprint lithography

We have performed experimental studies and numerical calculations on the dipolar interaction in an ideally ordered hexagonal nanorod array. The dipolar field in an ordered Co nanorod array was measured using an in-field magnetic force microscope (MFM) with a controlled applied field. The average dip...

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Bibliographic Details
Published in:Applied physics letters 2008-05, Vol.92 (19), p.192504-192504-3
Main Authors: Wang, T., Wang, Y., Fu, Y., Hasegawa, T., Washiya, T., Saito, H., Ishio, S., Li, F. S., Oshima, H., Itoh, K., Nishio, K., Masuda, H.
Format: Article
Language:English
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Summary:We have performed experimental studies and numerical calculations on the dipolar interaction in an ideally ordered hexagonal nanorod array. The dipolar field in an ordered Co nanorod array was measured using an in-field magnetic force microscope (MFM) with a controlled applied field. The average dipolar fields of neighboring nanorods acting on a center nanorod were calculated by approximating the monopole with a magnetic charge m = M S S on the end of each nanorod. The largest dipolar field obtained from numerical calculation is agreement with that from in-field MFM measurements.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2928202