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arXiv · 1511.05054

Imaging the magnetic nano-domains in Nd2Fe14B

Lunan Huang·Valentin Taufour·T. N. Lamichhane·Benjamin Schrunk·Sergei L. Bud'ko·P. C. Canfield·Adam Kaminski
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Abstract

We study magnetic domains in Nd2Fe14B single crystals using high resolution magnetic force mi- croscopy (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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Lunan Huang, Valentin Taufour, T. N. Lamichhane, Benjamin Schrunk, Sergei L. Bud'ko, P. C. Canfield, Adam Kaminski. 2015-11-16. Imaging the magnetic nano-domains in Nd2Fe14B. https://doi.org/10.1103/physrevb.93.094408

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