MRSEC logo
UW-Madison
MRSEC
  Magneto-Optic Imaging: The Facility  
 

 

The facility is a state-of-the-art magneto-optical imaging system built on a Nikon polarized light microscope. A solenoid mounted at the base of the column can produce external magnetic fields of 0 - 0.12 T oriented either in the plane or normal to the plane of the sample. The detector system uses Bi -doped ferromagnetic garnet indicator films with in-plane magnetic anisotropy. This unique ferromagnetic indicator material measures the perpendicular component of the magnetic field above the surface of the sample with a spatial resolution of ~ 5 microns. Images are collected with analog or digital cameras. The local magnetic field above the sample can be compared directly with conventional light microscope images of the same region for studies of structure-property relationships. A He-flow cryostat allows control of the sample temperature from room temperature down to as low as ~7 K. Specialized image analysis software for analysis of the magnetic field distribution above superconducting samples is integrated into the system.

 
Return to Magneto-Optic Imaging
  MRSEC Home
Center Organization
Current Research
Interdisciplinary
Education Group
REU Program
Research Highlights
Personnel
Facilities
Publications
Seminars
Nat'l Education Resources
PREM
National Science Foundation Logo
  Administration Login