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Title: A separation of antiferromagnetic spin motion modes in the training effect of exchange biased Co/CoO film with in-plane anisotropy

Abstract

The motion of antiferromagnetic interfacial spins is investigated through the temperature evolution of training effect in a Co/CoO film with in-plane biaxial anisotropy. Significant differences in the training effect and its temperature dependence are observed in the magnetic easy axis and hard axis (HA) and ascribed to the different motion modes of antiferromagnetic interfacial spins, the collective spin cluster rotation (CSR) and the single spin reversal (SSR), caused by different magnetization reversal modes of ferromagnetic layer. These motion modes of antiferromagnetic spins are successfully separated using a combination of an exponential function and a classic n{sup −1/2} function. A larger CSR to SSR ratio and a shorter lifetime of CSR found in the HA indicates that the domain rotation in the ferromagnetic layer tends to activate and accelerate a CSR mode in the antiferromagnetic spins.

Authors:
 [1];  [2]; ; ; ; ; ; ;  [1];  [1];  [3]
  1. State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China)
  2. (United Kingdom)
  3. (China)
Publication Date:
OSTI Identifier:
22597734
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTIFERROMAGNETISM; COBALT; COBALT OXIDES; FILMS; LAYERS; MAGNETIZATION; ROTATION; SPIN; TEMPERATURE DEPENDENCE

Citation Formats

Wu, R., Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, Yun, C., Ding, S. L., Wen, X., Liu, S. Q., Wang, C. S., Han, J. Z., Du, H. L., Yang, J. B., E-mail: jbyang@pku.edu.cn, and Collaborative Innovation Center of Quantum Matter, Beijing 100871. A separation of antiferromagnetic spin motion modes in the training effect of exchange biased Co/CoO film with in-plane anisotropy. United States: N. p., 2016. Web. doi:10.1063/1.4960092.
Wu, R., Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, Yun, C., Ding, S. L., Wen, X., Liu, S. Q., Wang, C. S., Han, J. Z., Du, H. L., Yang, J. B., E-mail: jbyang@pku.edu.cn, & Collaborative Innovation Center of Quantum Matter, Beijing 100871. A separation of antiferromagnetic spin motion modes in the training effect of exchange biased Co/CoO film with in-plane anisotropy. United States. doi:10.1063/1.4960092.
Wu, R., Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, Yun, C., Ding, S. L., Wen, X., Liu, S. Q., Wang, C. S., Han, J. Z., Du, H. L., Yang, J. B., E-mail: jbyang@pku.edu.cn, and Collaborative Innovation Center of Quantum Matter, Beijing 100871. Sun . "A separation of antiferromagnetic spin motion modes in the training effect of exchange biased Co/CoO film with in-plane anisotropy". United States. doi:10.1063/1.4960092.
@article{osti_22597734,
title = {A separation of antiferromagnetic spin motion modes in the training effect of exchange biased Co/CoO film with in-plane anisotropy},
author = {Wu, R. and Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS and Yun, C. and Ding, S. L. and Wen, X. and Liu, S. Q. and Wang, C. S. and Han, J. Z. and Du, H. L. and Yang, J. B., E-mail: jbyang@pku.edu.cn and Collaborative Innovation Center of Quantum Matter, Beijing 100871},
abstractNote = {The motion of antiferromagnetic interfacial spins is investigated through the temperature evolution of training effect in a Co/CoO film with in-plane biaxial anisotropy. Significant differences in the training effect and its temperature dependence are observed in the magnetic easy axis and hard axis (HA) and ascribed to the different motion modes of antiferromagnetic interfacial spins, the collective spin cluster rotation (CSR) and the single spin reversal (SSR), caused by different magnetization reversal modes of ferromagnetic layer. These motion modes of antiferromagnetic spins are successfully separated using a combination of an exponential function and a classic n{sup −1/2} function. A larger CSR to SSR ratio and a shorter lifetime of CSR found in the HA indicates that the domain rotation in the ferromagnetic layer tends to activate and accelerate a CSR mode in the antiferromagnetic spins.},
doi = {10.1063/1.4960092},
journal = {Journal of Applied Physics},
number = 5,
volume = 120,
place = {United States},
year = {Sun Aug 07 00:00:00 EDT 2016},
month = {Sun Aug 07 00:00:00 EDT 2016}
}