High resolution magnetic force microscopy of patterned L1(0)-FePt dot arrays by nanosphere lithography

Hai Zhong; Guido Tarrach; Peiwen Wu; Andreas Drechsler; Dan Wei; Jun Yuan

doi:10.1088/0957-4484/19/9/095703

High resolution magnetic force microscopy of patterned L1(0)-FePt dot arrays by nanosphere lithography

Hai Zhong, Guido Tarrach, Peiwen Wu, Andreas Drechsler, Dan Wei, Jun Yuan

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

High resolution magnetic force microscopy (MFM) has been carried out on L1(0)-FePt dot arrays patterned by plasma modified nanosphere lithography. An ex situ tip magnetization reversal experiment is carried out to determine the magnetic domains and verify the imaging stability of MFM and the mutual perturbations between the magnetic tip and the sample. We have identified that the critical size for the single domain region is about 90 nm across. Comparison with MFM image simulation also suggests that the magnetizations of the triangular dots in both single and double domain states are parallel to one edge of the dots, indicating the large uniaxial magnetocrystalline anisotropy of the L1(0)-FePt phase and the need for decreasing the magnetostatic energy.

Original language	English
Article number	095703
Number of pages	5
Journal	Nanotechnology
Volume	19
Issue number	9
DOIs	https://doi.org/10.1088/0957-4484/19/9/095703
Publication status	Published - 5 Mar 2008

Keywords

NANOPARTICLES
STORAGE
MEDIA

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10.1088/0957-4484/19/9/095703

2008 ZhongNanotechnology19p095703Submitted manuscript, 503 KB

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abstract = "High resolution magnetic force microscopy (MFM) has been carried out on L1(0)-FePt dot arrays patterned by plasma modified nanosphere lithography. An ex situ tip magnetization reversal experiment is carried out to determine the magnetic domains and verify the imaging stability of MFM and the mutual perturbations between the magnetic tip and the sample. We have identified that the critical size for the single domain region is about 90 nm across. Comparison with MFM image simulation also suggests that the magnetizations of the triangular dots in both single and double domain states are parallel to one edge of the dots, indicating the large uniaxial magnetocrystalline anisotropy of the L1(0)-FePt phase and the need for decreasing the magnetostatic energy.",

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AU - Zhong, Hai

AU - Tarrach, Guido

AU - Wu, Peiwen

AU - Drechsler, Andreas

AU - Wei, Dan

AU - Yuan, Jun

PY - 2008/3/5

Y1 - 2008/3/5

N2 - High resolution magnetic force microscopy (MFM) has been carried out on L1(0)-FePt dot arrays patterned by plasma modified nanosphere lithography. An ex situ tip magnetization reversal experiment is carried out to determine the magnetic domains and verify the imaging stability of MFM and the mutual perturbations between the magnetic tip and the sample. We have identified that the critical size for the single domain region is about 90 nm across. Comparison with MFM image simulation also suggests that the magnetizations of the triangular dots in both single and double domain states are parallel to one edge of the dots, indicating the large uniaxial magnetocrystalline anisotropy of the L1(0)-FePt phase and the need for decreasing the magnetostatic energy.

AB - High resolution magnetic force microscopy (MFM) has been carried out on L1(0)-FePt dot arrays patterned by plasma modified nanosphere lithography. An ex situ tip magnetization reversal experiment is carried out to determine the magnetic domains and verify the imaging stability of MFM and the mutual perturbations between the magnetic tip and the sample. We have identified that the critical size for the single domain region is about 90 nm across. Comparison with MFM image simulation also suggests that the magnetizations of the triangular dots in both single and double domain states are parallel to one edge of the dots, indicating the large uniaxial magnetocrystalline anisotropy of the L1(0)-FePt phase and the need for decreasing the magnetostatic energy.

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High resolution magnetic force microscopy of patterned L1(0)-FePt dot arrays by nanosphere lithography

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Keywords

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