Finite coplanar waveguide width effects in pulsed inductive microwave magnetometry

Journal Article · Mon Jul 12 00:00:00 EDT 2004 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1769084· OSTI ID:20632664

Schneider, M L; Kos, A B; Silva, T J ^[1]

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1. National Institute of Standards and Technology, Electromagnetics Division, 325 Broadway, Boulder, Colorado 80305 (United States)

The effect of finite coplanar waveguide (CPW) width on the measurement of the resonance frequency in thin ferromagnetic films has been characterized for pulsed inductive microwave magnetometry. A shift in resonant frequency is a linear function of the ratio of sample thickness to CPW width. The proportionality constant is experimentally determined to be 0.74{+-}0.1 times the saturation magnetization of the film. The frequency shift may be modeled as arising from an effective magnetic-anisotropy field.

• OSTI ID: 20632664
• Journal Information: Applied Physics Letters, Vol. 85, Issue 2; Other Information: DOI: 10.1063/1.1769084; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
FERROMAGNETIC MATERIALS
FREQUENCY MEASUREMENT
MAGNETIC RESONANCE
MAGNETIZATION
MAGNETOMETERS
PERMALLOY
THICKNESS
THIN FILMS
WAVEGUIDES
WIDTH