Magneto-optical Kerr effect characterization of electrodeposited Y-junction magnetic nanostructures

Sachin Pathak, Jongill Hong, Jai Chaudhary, Manish Sharma

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Magneto-optical Kerr effect (MOKE) is used to investigate 1-D arrays of hexagonally arranged Co Y-junction nanostructures embedded in Anodic aluminium oxide (AAO) templates. MOKE in reflection mode clearly distinguishes the magnetic response on the front and back sides of two magnetic samples, i.e., in the form of solid nanowires and as hollow nanotubes. MOKE, being a surface sensitive technique, clearly shows the effect of magnetic interactions and density on magnetization reversal measurements. The experimental measurements complement well with the simulation results using MAGPAR. Simulations suggest the formation of closed vortex state in hollow nanotubes prominently and are found to be consistent with the MOKE measurements. Our approach also clearly shows that it is possible to study and model the exact profile of the Y-shaped nanowires. Their magnetization state is important and will have a significant impact on the overall magnetization as well as the switching behaviour of the nanowires.

Original languageEnglish
Article number17A751
JournalJournal of Applied Physics
Volume117
Issue number17
DOIs
Publication statusPublished - 2015 May 7

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Kerr effects
nanowires
magnetization
hollow
nanotubes
complement
templates
aluminum oxides
simulation
vortices
profiles
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "Magneto-optical Kerr effect (MOKE) is used to investigate 1-D arrays of hexagonally arranged Co Y-junction nanostructures embedded in Anodic aluminium oxide (AAO) templates. MOKE in reflection mode clearly distinguishes the magnetic response on the front and back sides of two magnetic samples, i.e., in the form of solid nanowires and as hollow nanotubes. MOKE, being a surface sensitive technique, clearly shows the effect of magnetic interactions and density on magnetization reversal measurements. The experimental measurements complement well with the simulation results using MAGPAR. Simulations suggest the formation of closed vortex state in hollow nanotubes prominently and are found to be consistent with the MOKE measurements. Our approach also clearly shows that it is possible to study and model the exact profile of the Y-shaped nanowires. Their magnetization state is important and will have a significant impact on the overall magnetization as well as the switching behaviour of the nanowires.",
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Magneto-optical Kerr effect characterization of electrodeposited Y-junction magnetic nanostructures. / Pathak, Sachin; Hong, Jongill; Chaudhary, Jai; Sharma, Manish.

In: Journal of Applied Physics, Vol. 117, No. 17, 17A751, 07.05.2015.

Research output: Contribution to journalArticle

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