RT-SHPM imaging of permalloy microstructures and garnet films using new high performance InSb sensors

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ORAL A., Kaval M., Dede M., Sandhu A.

2002 IEEE International Magnetics Conference, INTERMAG Europe 2002, Amsterdam, Netherlands, 28 April - 02 May 2002 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/intmag.2002.1001104
  • City: Amsterdam
  • Country: Netherlands
  • Middle East Technical University Affiliated: No

Abstract

©2002 IEEE.Scanning Hall probe microscopy (SHPM) is a quantitative and noninvasive technique to image magnetic samples with high spatial and magnetic field resolution: ∼120 nm & 6×10-6T/√(Hz) at room temperature. A sub-micron Hall probe is scanned over the sample surface to measure the surface magnetic fields using conventional scanning tunneling microscopy-positioning techniques. We have developed new low noise, high performance InSb Hall sensors for room temperature scanning Hall probe microscopy (RT-SHPM), which has a noise level of 6×10-7T/√(Hz).