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Ferromagnetism in Fe-doped MgO nanoparticles

  • Sumalin Phokha
  • Jutharatana Klinkaewnarong
  • Sitchai Hunpratub
  • Kornkanok Boonserm
  • Ekaphan Swatsitang
  • Santi Maensiri
Article

Abstract

This work reports the study on magnetic properties of Mg1−xFexO (x = 0, 0.05 and 0.07) nanoparticles prepared by the polymer pyrolysis method. Phase, valence states and magnetic properties of these samples were characterized using X-ray diffraction (XRD), transmission electron microscopy, X-ray absorption near edge structure (XANES) and vibrating sample magnetometer (VSM), respectively. The XRD results show that the samples have a phase nature of the cubic structure with constant crystallite size of 25 ± 2 nm. XANES spectra reveal the existence of Fe3+ ions in the samples. VSM measurements exhibit the room temperature ferromagnetism with a maximum magnetization of 1.60 emu/g for x = 0.07. The origin of ferromagnetism is fitted on the bound magnetic polaron (BMP) model to indicate the numbers of BMPs involving overlapping of polarons via oxygen vacancy defects.

Keywords

Field Cool Vacancy Defect Room Temperature Ferromagnetism Vibrate Sample Magnetometer Measurement Bind Magnetic Polaron 
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.

Notes

Acknowledgments

The authors would like to thank the Synchrotron Light Research Institute (Public Organization), Nakhon Ratchasima, Thailand for XANES facilities, the Department of Physics, Khon Kaen University for providing VSM facilities and the Advanced Materials Physics (AMPs) Laboratory for our research.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Sumalin Phokha
    • 1
  • Jutharatana Klinkaewnarong
    • 1
  • Sitchai Hunpratub
    • 1
  • Kornkanok Boonserm
    • 2
  • Ekaphan Swatsitang
    • 3
  • Santi Maensiri
    • 4
  1. 1.Department of Physics, Faculty of ScienceUdon Thani Rajabhat UniversityUdon ThaniThailand
  2. 2.Department of Applied Chemistry, Faculty of Science and Liberal ArtsRajamangala University of Technology IsanNakhon RatchasimaThailand
  3. 3.Integrated Nanotechnology Research Center and Department of Physics, Faculty of ScienceKhon Kaen UniversityKhon KaenThailand
  4. 4.School of Physics, Institute of ScienceSuranaree University of TechnologyNakhon RatchasimaThailand

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