The superior role of the Gilbert damping on the signal-to-noise ratio in heat-assisted magnetic recording

Muthsam, Olivia; Slanovc, Florian; Vogler, Christoph; Suess, Dieter

doi:10.1016/j.jmmm.2020.167125

Cited by 3 publications

(2 citation statements)

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“…After that, enormous efforts have been devoted to advancing the TR-MOKE methodology, such as interpreting the physical origins of the TR-MOKE signal ,,− and optimizing the signal amplitude to improve the measurement signal-to-noise ratio (SNR) . To date, TR-MOKE has proven to be a powerful technique which provides sensitive and high-throughput measurements to characterize material properties and to reveal the rich physics of magnetization dynamics of various magnetic materials, which serve as the essential building blocks for spintronic and magnetic recording devices …”

Section: Instrumentationmentioning

confidence: 99%

“…21 To date, TR-MOKE has proven to be a powerful technique which provides sensitive and highthroughput measurements to characterize material properties and to reveal the rich physics of magnetization dynamics of various magnetic materials, which serve as the essential building blocks for spintronic 22 and magnetic recording devices. 23 Figure 1a depicts the schematics of an example TR-MOKE setup in use at the University of Minnesota (UMN). 8 In TR-MOKE, a mode-locked Ti:sapphire laser produces a train of pulses with a duration of ∼100 fs and a center wavelength of ∼800 nm.…”

Section: Instrumentationmentioning

confidence: 99%

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

Huang

Lattery

Wang

2020

ACS Appl. Electron. Mater.

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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.

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