Asymmetric magnetic proximity effect in a Pd/Co/Pd trilayer system

Kim, Dong -Ok; Song, Kyung Mee; Choi, Yongseong; Min, Byoung -Chul; Kim, Jae -Sung; Choi, Jun Woo; Lee, Dong Ryeol

doi:10.1038/srep25391

Title: Asymmetric magnetic proximity effect in a Pd/Co/Pd trilayer system

Journal Article · Fri May 06 00:00:00 EDT 2016 · Scientific Reports

DOI:https://doi.org/10.1038/srep25391· OSTI ID:1275835

Kim, Dong -Ok ^[1]; Song, Kyung Mee ^[2]; Choi, Yongseong ^[3]; Min, Byoung -Chul ^[4]; Kim, Jae -Sung ^[5]; Choi, Jun Woo ^[4]; Lee, Dong Ryeol ^[6]

Soongsil Univ., Seoul (Republic of Korea); Korea Institute of Science and Technology, Seoul (Republic of Korea)
Korea Institute of Science and Technology, Seoul (Republic of Korea); Sookmyung Women's Univ., Seoul (Republic of Korea)
Argonne National Lab. (ANL), Argonne, IL (United States)
Korea Institute of Science and Technology, Seoul (Republic of Korea)
Sookmyung Women's Univ., Seoul (Republic of Korea)
Soongsil Univ., Seoul (Republic of Korea); Argonne National Lab. (ANL), Argonne, IL (United States)

In spintronic devices consisting of ferromagnetic/nonmagnetic systems, the ferromagnet-induced magnetic moment in the adjacent nonmagnetic material significantly influences the spin transport properties. In this study, such magnetic proximity effect in a Pd/Co/Pd trilayer system is investigated by x-ray magnetic circular dichroism and x-ray resonant magnetic reflectivity, which enables magnetic characterizations with element and depth resolution. We observe that the total Pd magnetic moments induced at the top Co/Pd interface are significantly larger than the Pd moments at the bottom Pd/Co interface, whereas transmission electron microscopy and reflectivity analysis indicate the two interfaces are nearly identical structurally. Furthermore, such asymmetry in magnetic proximity effects could be important for understanding spin transport characteristics in ferromagnetic/nonmagnetic systems and its potential application to spin devices.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Research Foundation of Korea (NRF); Korea Institute of Science and Technology (KIST)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1275835

Journal Information:: Scientific Reports, Vol. 6; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 26 works

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