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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
Article

Abstract

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.

Keywords

Barrier Height Fe3O4 Nanoparticles Ideality Factor Schottky Barrier Height Interface State Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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