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Applied Physics Letters / Volume 96 / Issue 2 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 96, 022503 (2010); http://dx.doi.org/10.1063/1.3291051 (3 pages)

Determination of the saturation magnetization of ion irradiated Py/Ta samples using polar magneto-optical Kerr effect and ferromagnetic resonance

D. Markó1, T. Strache1, K. Lenz1, J. Fassbender1, and R. Kaltofen2

1Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf e.V., P.O. Box 51 01 19, 01314 Dresden, Germany
2IFW Dresden, Institut für Integrative Nanowissenschaften, Helmholtzstr. 20, 01069 Dresden, Germany

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(Received 13 August 2009; accepted 18 December 2009; published online 11 January 2010)

Based on polar magneto-optical Kerr effect and frequency dependent ferromagnetic resonance measurements, a method has been found that allows for the quantitative determination of the saturation magnetization of samples with unknown effective magnetic volume. Conventional magnetometry cannot be used for this purpose. Thin Py/Ta multilayers with an overall Py thickness of 20 nm but different number of interfaces are used as test systems. By means of Ne ion irradiation the magnetic moment and the saturation magnetization are affected due to interfacial mixing. With both increasing ion fluence and increasing number of Py/Ta interfaces, a decrease of saturation magnetization is observed.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

ferromagnetic materials, ferromagnetic resonance, ion beam effects, iron alloys, Kerr magneto-optical effect, magnetic moments, magnetic multilayers, magnetisation, nickel alloys, tantalum

PACS

  • 75.70.Cn

    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

  • 75.60.Ej

    Magnetization curves, hysteresis, Barkhausen and related effects

  • 75.30.Cr

    Saturation moments and magnetic susceptibilities

  • 75.50.Bb

    Fe and its alloys

  • 78.67.Pt

    Multilayers; superlattices; photonic structures; metamaterials

  • 78.20.Ls

    Magneto-optical effects

  • 76.50.+g

    Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3291051

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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