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Tuning exchange coupling by replacing CoFe with amorphous CoFeB in the CoFe/Ru/CoFe synthetic antiferromagnetic structure
Authors:ZB Guo  BY Zong  JJ Qiu  P Luo  LH An  H Meng  GC Han  HK Hui
Institution:1. Data Storage Institute, Agency for Science, Technology and Research (A*STAR), DSI Building, 5 Engineering Drive 1, Singapore 117608, Singapore;2. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore;1. Christian Doppler Laboratory for Advanced Magnetic Sensing and Materials, Institute of Solid State Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria;2. Infineon Technologies Austria AG, Siemensstrasse 2, 9500 Villach, Austria;3. Center for Integrated Sensor Systems, Danube University Krems, Viktor-Kaplan-Str. 2E, 2700 Wiener Neustadt, Austria;1. College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China;2. Clarendon Laboratory, Oxford University, OX1 3PU, United Kingdom;3. School of Physics and Astronomy, University of Southampton, SO17 1BJ, United Kingdom;1. Institut Jean Lamour, Université de Lorraine, UMR 7198 CNRS, 54506 Vandoeuvre-lés-Nancy, France;2. Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany;1. Department of Materials Sciences and Engineering, University of Anadolu, Eski?ehir 26555, Turkey;2. Department of Elementary Education, University of Bart?n, Bart?n 74100, Turkey
Abstract:We studied exchange coupling in the CoFe/Ru/CoFe synthetic antiferromagnetic structure with systematical replacement of the crystalline CoFe with amorphous CoFeB. Antiferromagnetic exchange coupling intensity decreases with an increase in the replacement in the bottom magnetic layer, which indicates that exchange coupling intensity could be tuned by the replacement. The origin of weakening antiferromagnetic exchange coupling is attributed to the amorphous CoFeB replacement inducing incomplete crystallization and disordered orientation in the Ru layer.
Keywords:
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