Anomalous domain wall dynamics in Ir50Mn50/Fe2CoSi bilayers

Kumar Jana, Apu and Manivel Raja, M. and Arout Chelvane, J. and Wang, James and Jammalamadaka, S Narayana (2022) Anomalous domain wall dynamics in Ir50Mn50/Fe2CoSi bilayers. Journal of Magnetism and Magnetic Materials, 560. pp. 1-7. ISSN 0304-8853

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Abstract

We report on the evidenced anomalous saw-tooth and curved domains in the Si/SiO2/IrMn/Fe2CoSi/Ta bilayers. The existence of saw-tooth domains is attributed to higher magnetic charge density at the domain boundary induced by the IrMn layer, while curved domains are apparent due to Dzyaloshinskii-Morya interaction (DMI). On the other hand, straight domain walls are apparent as a result of uni–axial anisotropy and four-fold anisotropy along the easy axis. The curvature for the domain walls decreases upon changing the angle between sample edge and the magnetic field. We believe that the present results would indeed be helpful for the development of the domain wall motion devices. © 2022 Elsevier B.V.

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IITH Creators:

IITH Creators	ORCiD
Jammalamadaka, S Narayana	UNSPECIFIED

Item Type:

Article

Additional Information:

We would like to thank Indian Institute of Technology Hyderabad (IITH) for financial assistance. SNJ would like to thank DST – SERB for the grant (CRG/2020/003497). We also would like to thank DST – FIST (SR/FST/PSI-215/2016) for the financial support.

Uncontrolled Keywords:

DMI; Domain; Domain wall dynamics; Magnetic charge density; Saw-tooth

Subjects:

Physics > Mechanical and aerospace
Others > Metallurgy Metallurgical Engineering
Physics

Divisions:

Department of Mechanical & Aerospace Engineering
Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

18 Jul 2022 07:36

Last Modified:

18 Jul 2022 07:36