Metallurgical and Materials Transactions A

, Volume 44, Issue 8, pp 3809–3814 | Cite as

The Synthesis of the Fe3O4 Nanoparticles and the Analysis of the Current–Voltage Measurements on Au/Fe3O4/p-Si Schottky Contacts in a Wide Temperature Range

  • Ali Riza Deniz
  • Zakir Çaldıran
  • Yilmaz Şahin
  • Mehmet Şinoforoğlu
  • Önder Metin
  • Kadem Meral
  • Şakir AydoğanEmail author


The iron oxide (Fe3O4) magnetic nanoparticles were synthesized via the organic solution phase method and used for the fabrication of the Au/Fe3O4/p-Si rectifying device. The variation in electrical characteristics of the Au/Fe3O4/p-Si Schottky contacts was investigated as a function of temperature using current–voltage (IV) measurements in the temperature range of 40 K to 370 K (−233 °C to 97 °C). The IV characteristics of the contacts indicated extremely strong temperature dependence. The double distribution of barrier heights was found in the Fe3O4/p-Si Schottky diodes from the IV-T measurements. The Schottky barrier height (Φb) increases with the increasing temperature, while the ideality factor n decreases. The nonlinearity in the activation energy plot was observed, which is attributed to barrier inhomogeneities by assuming a Gaussian distribution of barrier heights at the Fe3O4/p-Si interface. The Richardson constant measured from the temperature-dependent IV characteristics is 2.99 A/K2 cm2, which is lower than the ideal value.


Barrier Height Fe3O4 Nanoparticles Ideality Factor Schottky Barrier Height Interface State Density 
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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2013

Authors and Affiliations

  • Ali Riza Deniz
    • 1
    • 2
  • Zakir Çaldıran
    • 1
  • Yilmaz Şahin
    • 1
  • Mehmet Şinoforoğlu
    • 3
  • Önder Metin
    • 3
  • Kadem Meral
    • 3
  • Şakir Aydoğan
    • 1
    Email author
  1. 1.Department of Physics, Faculty of ScienceAtatürk UniversityErzurumTurkey
  2. 2.Department of Electrical-Electronics Engineering, Engineering FacultyHakkari UniversityHakkariTurkey
  3. 3.Department of Chemistry, Faculty of ScienceAtatürk UniversityErzurumTurkey

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