Materials Engineering Enabled by Time-Resolved Magneto-Optical Kerr Effect for Spintronic Applications

Dingbin Huang; Dustin Lattery; Xiaojia Wang

doi:10.1021/acsaelm.0c00961

Materials Engineering Enabled by Time-Resolved Magneto-Optical Kerr Effect for Spintronic Applications

Dingbin Huang, Dustin Lattery, Xiaojia Wang

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

As an updated version of the ultrafast pump-probe laser technique, the time-resolved magneto-optical Kerr effect (TR-MOKE) methodology enables the detection of magnetization dynamics with superb temporal (sub-picosecond) and spatial (diffraction-limited beam spot) resolutions. It is a powerful tool to characterize material properties and to reveal the rich physics of magnetization dynamics in magnetic thin films, which serve as the essential building blocks for spintronic and magnetic recording devices. In this spotlight article, we will highlight the recent advances in the development of TR-MOKE metrology and its applications for capturing the magnetization dynamics in technologically important spintronic materials. We cover several representative examples based on research activities carried out at the University of Minnesota (UMN), including studies of Gilbert damping, spin-strain coupling, and interlayer exchange coupling of perpendicular magnetic materials. A brief discussion will be also presented, which highlights several other emerging research topics that are potentially enabled by this metrology to form a more comprehensive picture of its applications for emerging materials and technologies.

Original language	English (US)
Pages (from-to)	119-127
Number of pages	9
Journal	ACS Applied Electronic Materials
Volume	3
Issue number	1
DOIs	https://doi.org/10.1021/acsaelm.0c00961
State	Published - Jan 26 2021

Bibliographical note

Funding Information:
The work described in this spotlight has been supported by the following funding agencies: National Science Foundation (NSF) Award No. 1804840, the University of Minnesota MRSEC (under the NSF Award DMR-2011401), the Advanced Storage Research Consortium, and the Minnesota Futures Award. D.L. acknowledges the support from the university’s 2019-2020 Doctoral Dissertation Fellowship. Portions of the work related to sample fabrication and characterization were conducted in the Minnesota Nano Center, supported by the NSF through the National Nano Coordinated Infrastructure Network under Award Number ECCS-2025124.

Publisher Copyright:
© 2021 ACS Applied Electronic Materials. All right reserved.

Keywords

damping constant
perpendicular magnetic anisotropy
spintronics
time-resolved magneto-optical Kerr effect
ultrafast pump-probe method

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Materials Engineering Enabled by Time-Resolved Magneto-Optical Kerr Effect for Spintronic Applications

Abstract

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