Probe and control of low-power photo-excited magnetization precession in Co/Pd multilayer films

Nicholas Smith; Brenden A. Magill; Rathsara R. H. H. Mudiyanselage; Hiro Munekata; Giti A. Khodaparast

doi:10.1117/12.2599697

2 August 2021 Probe and control of low-power photo-excited magnetization precession in Co/Pd multilayer films

Nicholas Smith, Brenden A. Magill, Rathsara R. H. H. Mudiyanselage, Hiro Munekata, Giti A. Khodaparast

Author Affiliations +

Proceedings Volume 11805, Spintronics XIV; 1180518 (2021) https://doi.org/10.1117/12.2599697
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Co/Pd thin film multilayers show large Perpendicular Magnetic Anisotropy (PMA) which is useful in MRAM devices for perpendicular magnetic recording. Co/Pd systems have been studied extensively through the use of ultrafast optical pump-probe methods in order to measure the Time Resolved Photo-excited Precession of Magnetization (TRPEPM). Most studies have been conducted at high laser fluence (> 1 mJ/cm2), where heating near the curie temperature occurs. In this study, we present low fluence measurements between 0.42 to 3.14 μJ/cm2 in Co/Pd systems with differing Co thickness between 0.4 to 0.74 nm to probe the role of interface anisotropy in low-power excitation.

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Nicholas Smith, Brenden A. Magill, Rathsara R. H. H. Mudiyanselage, Hiro Munekata, and Giti A. Khodaparast "Probe and control of low-power photo-excited magnetization precession in Co/Pd multilayer films", Proc. SPIE 11805, Spintronics XIV, 1180518 (2 August 2021); https://doi.org/10.1117/12.2599697

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