Room-temperature scanning Hall probe microscope (RT-SHPM) imaging of garnet films using new high-performance InSb sensors

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Oral A., Kaval M., DEDE M., MASUDA H., OKAMOTO A., SHİBASAKİ I., ...More

IEEE TRANSACTIONS ON MAGNETICS, vol.38, no.5, pp.2438-2440, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 5
  • Publication Date: 2002
  • Doi Number: 10.1109/tmag.2002.803607
  • Journal Name: IEEE TRANSACTIONS ON MAGNETICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2438-2440
  • Keywords: Hall effect, scanning Hall probe microscopy
  • Middle East Technical University Affiliated: No

Abstract

High-performance InSb micro-HaIl sensors were fabricated by optical lithography and incorporated in a room-temperature scanning Hall probe microscope for imaging of localized magnetic fluctuations in close proximity to the surfaces of crystalline uniaxial garnet films. The room-temperature noise figure of the InSb sensors was 6-10 mG/v/Hz, which is an order of magnitude better than GaAs-AlGaAs two-dimensional electron gas sensors used to date.