Recent advances in magnetic force microscopy

Self-Assembled Magnetic Nanohead-FeSi Nanowire Epitaxial Heterojunctions by Chemical Vapor Deposition

“…Through controlling the growth conditions, MFM probes with a single NW tip and single-domain magnetic nanoparticle could be produced. The new MFM tip structure and, consequently, calculation of the tip−sample interaction can be significantly simplified, compared with commercial tips coated with a magnetic film of multiple domains . The tip−sample perturbation and convolution are also reduced due to the small volume of the single domain magnetic nanoparticle.…”

“…The new MFM tip structure and, consequently, calculation of the tip-sample interaction can be significantly simplified, compared with commercial tips coated with a magnetic film of multiple domains. 44 The tip-sample perturbation and convolution are also reduced due to the small volume of the single domain magnetic nanoparticle. Therefore, these magnetic nanohead-FeSi nanowire epitaxial heterojunctions are very promising candidates for highly sensitive MFM probes.…”

Growth of Carbon Nanofibers on Tipless Cantilevers for High Resolution Topography and Magnetic Force Imaging

“…With control over the growth conditions, probes with sharp tips and single-domain structures can be produced and characterized. The tip structure and, consequently, calculation of the tip−sample interaction can be simplified, compared with commercial tips covered with a magnetic film consisting of multiple domains . The tip−sample perturbation also is reduced due to the small volume of the nanoparticle.…”

“…The tip geometries of the CNF probes are defined by their catalyst particles, whose magnetic nature also imparts their capability of imaging magnetic samples. These probe tips may provide important information about the magnetic phenomena at the nanometer scale with the drive for ever-increasing storage density of magnetic hard disks . Although the current work was performed only on individual and commercially available tipless cantilevers, the process is not thereby limited and scale-up production is possible.…”

“…The tip structure and, consequently, calculation of the tip-sample interaction can be simplified, compared with commercial tips covered with a magnetic film consisting of multiple domains. 17 The tip-sample perturbation also is reduced due to the small volume of the nanoparticle. Another advantage of the CNF probes is that the magnetic particles are encapsulated in the carbon matrix, thus minimizing atmospheric degradation effects that are inevitable for commercial metal-coated tips.…”