search for


Domain Wall Motions in Ferromagnetic Thin Film Induced by Laser Heating Pulse
Applied Microscopy 2018;48:128-9
Published online December 30, 2018
© 2018 Korean Society of Microscopy.

Hyun Soon Park*

Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea
Correspondence to: *Park HS,, Tel: +82-32-860-7533 Fax: +82-32-862-5546 E-mail:
Received December 21, 2018; Revised December 26, 2018; Accepted December 26, 2018.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Soft ferromagnetic materials are utilized for various electromagnetic devices such as magnetic recording heads and magnetic shielding. In situ observation of magnetic microstructures and domain wall motions are prerequisite for understanding and improving their magnetic properties. In this work, by the Fresnel (out-of-focus) method of Lorentz microscopy, we observe the domain wall motions of polycrystalline Ni/Ti thin film layers triggered by single-shot laser pulse. Random motions of domain walls were visualized at every single pulse.
Keywords : Lorentz microscopy, Ferromagnetic thin film, Domain wall, Laser heating pulse, TEM

December 2018, 48 (4)
  • Science Central
  • CrossMark
  • Crossref TDM