Magnetic response versus lift height of thin ferromagnetic films

Tanner Schulz; Gabe Burch; Andrew Kunz; E. Dan Dahlberg

doi:10.1109/TMAG.2009.2039701

Magnetic response versus lift height of thin ferromagnetic films

Tanner Schulz, Gabe Burch, Andrew Kunz, E. Dan Dahlberg

Physics and Astronomy (Twin Cities)

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

1 Scopus citations

Abstract

The interaction between a magnetic force microscope (MFM) tip and ferromagnetic films of Ni, Co₉₀ Fe₁₀ and Py with in-plane magnetization has been investigated. The measured interaction, due to the magnetizing of the films by the MFM tip field, was determined by the phase shift of the cantilever response. The tip-film separation or lift height dependent phase shift was found to be independent of the saturation magnetization of the ferromagnetic film. The result is identical for all three films and micromagnetic simulations give similar results. The reason is at a given tip-sample separation the tip induced magnetization of the film creates a demagnetization field which is equal in magnitude to the tip field at that separation.

Original language	English (US)
Article number	5467511
Pages (from-to)	1752-1754
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2009.2039701
State	Published - Jun 2010

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by the MRSEC Program of the National Science Foundation under Award Number DMR-0819885.

Keywords

Magnetic films
Magnetic force microscopy

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10.1109/TMAG.2009.2039701

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abstract = "The interaction between a magnetic force microscope (MFM) tip and ferromagnetic films of Ni, Co90 Fe10 and Py with in-plane magnetization has been investigated. The measured interaction, due to the magnetizing of the films by the MFM tip field, was determined by the phase shift of the cantilever response. The tip-film separation or lift height dependent phase shift was found to be independent of the saturation magnetization of the ferromagnetic film. The result is identical for all three films and micromagnetic simulations give similar results. The reason is at a given tip-sample separation the tip induced magnetization of the film creates a demagnetization field which is equal in magnitude to the tip field at that separation.",

keywords = "Magnetic films, Magnetic force microscopy",

author = "Tanner Schulz and Gabe Burch and Andrew Kunz and Dahlberg, {E. Dan}",

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AU - Schulz, Tanner

AU - Burch, Gabe

AU - Kunz, Andrew

AU - Dahlberg, E. Dan

N1 - Funding Information: ACKNOWLEDGMENT This work was supported by the MRSEC Program of the National Science Foundation under Award Number DMR-0819885.

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N2 - The interaction between a magnetic force microscope (MFM) tip and ferromagnetic films of Ni, Co90 Fe10 and Py with in-plane magnetization has been investigated. The measured interaction, due to the magnetizing of the films by the MFM tip field, was determined by the phase shift of the cantilever response. The tip-film separation or lift height dependent phase shift was found to be independent of the saturation magnetization of the ferromagnetic film. The result is identical for all three films and micromagnetic simulations give similar results. The reason is at a given tip-sample separation the tip induced magnetization of the film creates a demagnetization field which is equal in magnitude to the tip field at that separation.

AB - The interaction between a magnetic force microscope (MFM) tip and ferromagnetic films of Ni, Co90 Fe10 and Py with in-plane magnetization has been investigated. The measured interaction, due to the magnetizing of the films by the MFM tip field, was determined by the phase shift of the cantilever response. The tip-film separation or lift height dependent phase shift was found to be independent of the saturation magnetization of the ferromagnetic film. The result is identical for all three films and micromagnetic simulations give similar results. The reason is at a given tip-sample separation the tip induced magnetization of the film creates a demagnetization field which is equal in magnitude to the tip field at that separation.

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KW - Magnetic force microscopy

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Magnetic response versus lift height of thin ferromagnetic films

Abstract

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