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

doi:10.1103/PhysRevB.93.094408

Imaging the magnetic nano-domains in Nd2Fe14B

Mesoscale and Nanoscale Physics 2017-03-21 v1

Authors: 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.

Keywords

magnetic domains magnetic force microscopy Nd2Fe14B nano-domains small angle neutron scattering domain walls fractal pattern

Cite

@article{arxiv.1511.05054,
  title  = {Imaging the magnetic nano-domains in Nd2Fe14B},
  author = {Lunan Huang and Valentin Taufour and T. N. Lamichhane and Benjamin Schrunk and Sergei L. Bud'ko and P. C. Canfield and Adam Kaminski},
  journal= {arXiv preprint arXiv:1511.05054},
  year   = {2017}
}

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4 pages, 5 figures

Imaging the magnetic nano-domains in Nd2Fe14B

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