Magneto-optical Kerr effect in perpendicularly magnetized Co/Pt films on two-dimensional colloidal crystals

Journal Article · Mon Jul 20 00:00:00 EDT 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3182689· OSTI ID:21304993

Liu, Z; Shi, L; Shi, Z; Liu, X H; Zi, J; Zhou, S M ^[1]; Wei, S J; Li, J ^[2]; Zhang, X; Xia, Y J ^[3]

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1. Department of Physics and Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433 (China)
2. Department of Optical Science and Engineering, Fudan University, Shanghai 200433 (China)
3. Shandong Province Key Lab Laser Polarization and Information, Qufu Normal University, Qufu 273165 (China)

Magneto-optical Kerr effect and optical reflectance are measured in the visible region for perpendicularly magnetized Co/Pt films on self-assembly array of two-dimensional closely packed polystyrene spheres. Peaks and valleys are observed in the magneto-optical Kerr and the optical reflectance spectra and their positions scale with the sphere diameter. In explanation of the above scenario, not only the Mie optical scattering of single nanocaps but also the surface plasmon resonance should be considered. This work will facilitate development of magnetoplasmonic nanosensors.

• OSTI ID: 21304993
• Journal Information: Applied Physics Letters, Vol. 95, Issue 3; Other Information: DOI: 10.1063/1.3182689; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT
CRYSTALS
KERR EFFECT
MAGNETISM
MAGNETO-OPTICAL EFFECTS
PLATINUM
POLYSTYRENE
REFLECTIVITY
SCATTERING
SPHERES
THIN FILMS
TWO-DIMENSIONAL CALCULATIONS