Title :
Measurement of the HBL nucleation field and VBL coercivity in magnetic garnet films
Author :
Opalsky, D. ; Humphrey, F.B.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
11/1/1993 12:00:00 AM
Abstract :
A sampling optical microscope is integrated with computer controlled instrumentation and a digital image processor. The system is used to make quantitative measurement of magnetic domain wall motion. The system can measure the average stripe width, over an 8.7 μm length, with 0.003 μm precision and 2 ns temporal resolution. With this system, the threshold for horizontal Bloch line (HBL) nucleation and the coercivity of a vertical Bloch line (VBL) is measured in straight walls in bubble garnet material
Keywords :
coercive force; computerised instrumentation; garnets; image processing equipment; magnetic bubbles; magnetic domain walls; magnetic thin films; magnetic variables measurement; nucleation; optical microscopy; 8.7 micron; HBL nucleation field; VBL coercivity; average stripe width; bubble garnet material; computer controlled instrumentation; digital image processor; horizontal Bloch line nucleation threshold; magnetic domain wall motion; magnetic garnet films; quantitative measurement; sampling optical microscope; temporal resolution; vertical Bloch line coercivity; Coercive force; Image sampling; Instruments; Integrated optics; Magnetic domain walls; Magnetic field measurement; Nuclear measurements; Optical computing; Optical control; Optical microscopy;
Journal_Title :
Magnetics, IEEE Transactions on
