Resolving the spin polarization and magnetic domain wall width of (Nd,Dy)2Fe14B with spin-polarized scanning tunneling microscopy

被引：2

作者：

Miyamachi, Toshio ^{[1
,2
,3
]}

Suergers, Christoph ^{[4
]}

Wulfhekel, Wulf ^{[4
,5
]}

机构：

[1] Nagoya Univ, Inst Mat & Syst Sustainabil IMaSS, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan

[2] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[3] Nagoya Univ, Sch Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[4] Karlsruhe Inst Technol KIT, Phys Inst, Wolfgang Gaede Str 1, D-76131 Karlsruhe, Germany

[5] Karlsruhe Inst Technol KIT, Inst Quantum Mat & Technol, D-76021 Karlsruhe, Germany

来源：

APPLIED PHYSICS EXPRESS | 2021年 / 14卷 / 11期

关键词：

spin-polarized scanning tunneling microscopy; magnetic domain wall; surface science; nanomagnetism; Neodymium magnet (NdFeB); CRYSTAL-STRUCTURE; ND2FE14B; Y2FE14B;

D O I：

10.35848/1882-0786/ac2a56

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electronic structure and the domain wall width of industrial (Nd,Dy)(2)Fe14B hard magnets were investigated using low-temperature, spin-polarized scanning tunneling microscopy (STM) in ultra-high vacuum. In a first step, atomically clean and flat surfaces were prepared. The flat terraces were separated by monatomic steps. Surface termination was identified as the Fe c layer from atomically resolved STM imaging. The electronic density of states and its spin polarization agree well with ab initio predictions of the Fe c layer. High-resolution spin-polarized STM images allowed to finally resolve the domain wall width w of only 3.2 +/- 0.4 nm.

引用

页数：5

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