Extraordinary Hall-effect in colloidal magnetic nanoparticle films

Leah Ben Gur, Einat Tirosh, Amir Segal, Gil Markovich*, Alexander Gerber

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Colloidal nickel nanoparticles (NPs) coated with polyvinylpyrrolidone (PVP) were synthesized. The nanoparticle dispersions were deposited on substrates and dried under mild heating to form conductive films. The films exhibited very small coercivity, nearly metallic conductivity, and a significant extraordinary Hall effect signal. This method could be useful for preparing simple, printed magnetic field sensors with the advantage of relatively high sensitivity around zero magnetic field, in contrast to magnetoresistive sensors, which have maximal field sensitivity away from zero magnetic field.

Original languageEnglish
Pages (from-to)178-182
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
StatePublished - 15 Mar 2017


  • Extraordinary Hall effect
  • Magnetic nanoparticles
  • Magnetic sensor
  • Printed electronics


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