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High Frequency Magnetics

We study the high-frequency properties of patterned ferromagnetic thin films and their possible applications in microwave devices.  We investigate the spin dynamics and noise of ferromagnetic structures.  We also examine the effects of application environments, such as temperature and DC current.  In addition, we explore magnetic flux concentrators for ultra-sensitive magnetic field sensor studies.

Magnetic domain structure

 

An SEM picture of patterned Py arrays (240 nm wide, 10 μm long and 100 nm thick) on a gold transmission line.

 

A sensitive device for magnetic dynamics characterization