TY - JOUR
T1 - Magnetic domain structure and magnetization reversal in (Co/Ni) and (Co/Pd) multilayers
AU - Al Risi, S.
AU - Bhatti, S.
AU - Al Subhi, A.
AU - Piramanayagam, S. N.
AU - Sbiaa, R.
N1 - Funding Information:
The authors would like to thank S. Al Harthi and M. T. Zar Myint from Sultan Qaboos University for their support and assistance in the magnetometry measurements. The authors are also thankful to Sultan Qaboos University for the financial support under Grant number IG/SCI/PHYS/18/04.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - The temporal behavior of magnetization reversal mechanism and domain structures of (Co/Ni) and (Co/Pd) multilayers have been studied using magneto-optical Kerr effect microscopy and magnetometry measurements. The domain size and nucleation field of (Co/Ni) multilayers were found to be reduced as the number of bilayers increases. On the other hand, (Co/Pd)×10 multilayer has a much larger domain size, faster magnetization switching, and a higher nucleation field than that in (Co/Ni). From the imaging of magnetic domains, two different types were observed, namely, dendritic domains for (Co/Ni) and blocks type for (Co/Pd). From time dependence of magnetization reversal at a fixed applied magnetic field, it was revealed that the reversal mechanism in (Co/Ni) multilayer occurs by nucleation followed by domain propagation. Whereas, for (Co/Pd) multilayers, few large domains were observed, and they were found to expand at a faster rate until a complete saturation.
AB - The temporal behavior of magnetization reversal mechanism and domain structures of (Co/Ni) and (Co/Pd) multilayers have been studied using magneto-optical Kerr effect microscopy and magnetometry measurements. The domain size and nucleation field of (Co/Ni) multilayers were found to be reduced as the number of bilayers increases. On the other hand, (Co/Pd)×10 multilayer has a much larger domain size, faster magnetization switching, and a higher nucleation field than that in (Co/Ni). From the imaging of magnetic domains, two different types were observed, namely, dendritic domains for (Co/Ni) and blocks type for (Co/Pd). From time dependence of magnetization reversal at a fixed applied magnetic field, it was revealed that the reversal mechanism in (Co/Ni) multilayer occurs by nucleation followed by domain propagation. Whereas, for (Co/Pd) multilayers, few large domains were observed, and they were found to expand at a faster rate until a complete saturation.
UR - http://www.scopus.com/inward/record.url?scp=85079573426&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85079573426&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2020.166579
DO - 10.1016/j.jmmm.2020.166579
M3 - Article
AN - SCOPUS:85079573426
SN - 0304-8853
VL - 503
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 166579
ER -