The effect of tip type and scan height on magnetic domain images obtained by MFM

Al-Khafaji, M.; Rainforth, W.M.; Gibbs, M.R.J.; Bishop, J.E.L.; Davies, H.A.

doi:10.1109/20.539319

Cited by 35 publications

(28 citation statements)

References 8 publications

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“…The anisotropy of magnetic properties complicates the situation by need to include further terms and generally leads to thinner domain walls and complex, fractal-like patterns of the domains [15][16][17] . The direction of the nanodomains reported herenseems to follow the outlines of the large domains as it is evident in Fig.…”

Section: Resultsmentioning

confidence: 99%

Imaging the magnetic nanodomains inNd2Fe14B

et al. 2016

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We study magnetic domains in Nd2Fe14B single crystals using high resolution magnetic force microscopy (MFM). Previous MFM studies and small angle neutron scattering experiments suggested the presence of nano-scale domains in addition to optically detected micrometer-scale ones. We find, in addition to the elongated, wavy nano-domains reported by a previous MFM study, that the micrometer size, star shape fractal pattern is constructed of an elongated network of nano-domains ∼20 nm in width, with resolution-limited domain walls thinner than 2 nm. While the microscopic domains exhibit significant resilience to an external magnetic field, some of the nano domains are sensitive to the magnetic field of the MFM tip.

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Section: Resultsmentioning

confidence: 99%

Imaging the magnetic nanodomains inNd2Fe14B

et al. 2016

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“…Since the direction of the nano-domain structures is parallel to edges of the star-shaped areas, its elongated shape must be a result of the shape of the star edges. This shape, which is also called a "branched state" [58], could significantly reduce the magnetostatic energy density very close to the surface [59]. However, the fundamental origin of the nano domains is still not clear and further theoretical analysis needs to be introduced.…”

Section: Resultsmentioning

confidence: 99%

Studies of Dirac and Weyl fermions by angle resolved photoemission spectroscopy

Huang

2016

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“…According to the terminology of the previous work on Nd-Fe-B-type permanent magnets, the contrast obtained in this case is the ''hard tip response.'' [11][12][13][14]17] In the case in which the stray fields generated by the sample strongly perturb the tip magnetization, a different interpretation is required. In particular, if the tip magnetization can be assumed to remain parallel to the sample stray fields at all times during imaging, the contrast is expected to highlight the transitions between the regions of uniform stray field in which tip remagnetization occurs.…”

Section: Mfm Contrast Interpretationmentioning

confidence: 98%

“…The basic concept has been described in past work, [11][12][13][14][15] and it involves systematic imaging using tips with different coercivities and different initial magnetization states. The ability to make conclusions without comprehensive modeling is necessary in order to extend the use of the MFM technique to cases in which incomplete information about both the tip-sample interaction responsible for the contrast and the underlying microstructure (i.e., local crystallographic orientation) complicate and inhibit simulation techniques.…”

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confidence: 99%

Interpretation of Magnetic Force Microscopy Contrast Using Commercially Available Batch Tips for Investigation of Surface Magnetic Domain Structure in Polycrystalline Bulk Equiatomic L10 FePd

Ohodnicki

Webler

Deshpande

et al. 2007

Metall Mater Trans A

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Magnetic force microscopy (MFM) is a useful technique for surface domain investigation; however, contrast interpretation can be difficult in situations in which imaging conditions are not ideal. The current work provides justification for a qualitative contrast interpretation framework, suitable for extracting physically meaningful information from MFM contrast obtained using commercially available batch tips for bulk equiatomic L1 0 FePd with several microstructures. Due to the large stray fields generated at the surface of bulk permanent magnet-type samples, the main complication in contrast interpretation is assumed to be due to the tip remagnetization effects. Although the framework does not adequately describe all of the contrast observed, it can be used to make reasonable conclusions about the underlying domain structures for complicated microstructures without the need for support from extensive modeling.

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The effect of tip type and scan height on magnetic domain images obtained by MFM

Cited by 35 publications

References 8 publications

Imaging the magnetic nanodomains inNd2Fe14B

Imaging the magnetic nanodomains inNd2Fe14B

Studies of Dirac and Weyl fermions by angle resolved photoemission spectroscopy

Interpretation of Magnetic Force Microscopy Contrast Using Commercially Available Batch Tips for Investigation of Surface Magnetic Domain Structure in Polycrystalline Bulk Equiatomic L10 FePd

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