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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [4] ;  [6]
  1. Soongsil Univ., Seoul (Republic of Korea); Korea Institute of Science and Technology, Seoul (Republic of Korea)
  2. Korea Institute of Science and Technology, Seoul (Republic of Korea); Sookmyung Women's Univ., Seoul (Republic of Korea)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Korea Institute of Science and Technology, Seoul (Republic of Korea)
  5. Sookmyung Women's Univ., Seoul (Republic of Korea)
  6. Soongsil Univ., Seoul (Republic of Korea); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
OSTI Identifier:
1275835
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
Scientific User Facilities Division; National Research Foundation (NRF) of Korea; Korea Institute of Science and Technology (KIST); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY