Journal of Materials Science

, Volume 41, Issue 17, pp 5625–5629 | Cite as

Planar Hall effect of indium antimonide thin film on silicon and nickel–zinc ferrite substrates

  • Wonyoung Kim
  • Joonyeon ChangEmail author
  • Sukhee Han


We have investigated Hall and planar Hall (PH) effect of indium antimonide (InSb) films thermally evaporated on two different substrates including Si and soft magnetic Ni–Zn ferrite. Polycrystalline InSb film with an average grain size of 1.2 μm shows substantial electron mobility of 6,700 cm2/Vs for Si and 5,680 cm2/Vs for Ni–Zn ferrite substrates respectively. Four-point bridge type Hall bar of InSb was fabricated using photolithography followed by chemical wet etch. An abrupt change in PH deviated from a normal PH curve was found on a ferrite substrate within a low field range of −50 to 50 Oe while no change happens on the Si substrate. Sharp PH curve immediately returns to the ordinary PH curve when applied field goes over −50 to 50 Oe without leaving any hysteresis of resistance. This is mainly attributed to the presence of the Bloch wall of Ni–Zn ferrite underneath InSb Hall bar. Intragranular domain wall movement is believed to be a prime source of the anomalous PH behavior in the low field range. The linear field dependence of PH in a resolution of 10 mΩ/Oe is sensitive high enough to be used as low-field magnetic sensors.


Ferrite InSb Hall Sensor Indium Antimonide Bloch Wall 



The authors thank Dr. J.H.Eom in Sejong University for useful discussions. This work was supported by KIST Vision21st program.


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Nano Device Research CenterFuture Technology Research Division, Korea Institute of Science and TechnologySeoulKorea

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