Observation of ferromagnetic resonance in a microscopic sample using magnetic resonance force microscopy

Journal Article · Mon Apr 01 00:00:00 EST 1996 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.115619· OSTI ID:279719

Zhang, Z; Hammel, P C ^[1]; Wigen, P E ^[2]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)

We report the observation of a ferromagnetic resonance signal arising from a microscopic ({approximately}20{mu}m{times}40{mu}m) particle of thin (3{mu}m) yttrium iron garnet film using magnetic resonance force microscopy (MRFM). The large signal intensity in the resonance spectra suggests that MRFM could become a powerful microscopic ferromagnetic resonance technique with a micron or sub-micron resolution. We also observe a very strong nonresonance signal which occurs in the field regime where the sample magnetization readily reorients in response to the modulation of the magnetic field. This signal will be the main noise source in applications where a magnet is mounted on the cantilever. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 279719
• Journal Information: Applied Physics Letters, Vol. 68, Issue 14; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
FERROMAGNETIC MATERIALS
MICROSCOPY
FERRITE GARNETS
FERROMAGNETIC RESONANCE
SPATIAL RESOLUTION
MAGNETIC FORCE MICROSCOPY