Ferromagnetic resonance imaging of Co films using magnetic resonance force microscopy

Conference · Wed Jul 01 04:00:00 EDT 1998

OSTI ID:661681

Suh, B J; Hammel, P C; Zhang, Z ^[1]; Midzor, M M; Roukes, M L ^[2]; Childress, J R ^[3]

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1. Los Alamos National Lab., NM (United States)
2. California Inst. of Tech., Pasadena, CA (United States)
3. Univ. of Florida, Gainsville, FL (United States)

Magnetic resonance force microscope (MRFM) technique has been applied to the study of spatial imaging in thin Co ferromagnetic film. A novel approach is proposesd to improve spatial resolution in MRFM, which is limited by the broad width of Co ferromagnetic resonance (FMR) line. The authors introduce a selective local field with a small yittrium iron garnet (YIG) grain. They have performed MRFM detected FMR on a sample consisting of two sections of Co films laterally separated by {approximately}20 {micro}m. The experimental results demonstrate the scanning imaging capabilities of MRFM. The results can be understood qualitatively by means of the calculated magnetic field and field gradient profiles generated by the YIG shere.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Management and Administration, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 661681
• Report Number(s): LA-UR--98-227; CONF-980107--; ON: DE98003460
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
COBALT
FERROMAGNETIC MATERIALS
FERROMAGNETIC RESONANCE
MAGNETIC PROPERTIES
MICROSCOPY