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<p>Recently, spintronics and opto-spintronics lead the dominant role in the electronics applications. In our work we have fabricated ZnO-rGO based NFO heterostructure to study the A.C and D.C characteristics under the variation of optical power and external magnetic field. ZnO-rGO acts as a photo detector under the visible range and NFO acts as a ferro magnetic material with high Curie temperature. D.C transport has been carried out through I-V measurement under variable optical power with magnetic field. There, the transport property of our device can be tuned under the variation of optical power but this variation is not so much prominent under different magnetic field. Additionally, A.C transport carried out through impedance spectroscopy measurement. The graphical nature of impedance spectroscopy revels the non-Debye type dielectric relaxation in the low frequency region. Theses graphs are also fitted with proper RC combinations to expose the interface morphology under variable conditions. Our investigation on ZnO-rGO/NFO heterostructure shows a very interesting opto-spintronics effect through magnetically tuning of photo current.</p>

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Investigation of Magneto-Optical tunability in DC and AC Transport property on Si/NiFe2O4/ZnO-rGO heterostructure

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Priyanka Banerjee,
  • K. Mukhopadhyay,
  • P. Dey

摘要

Recently, spintronics and opto-spintronics lead the dominant role in the electronics applications. In our work we have fabricated ZnO-rGO based NFO heterostructure to study the A.C and D.C characteristics under the variation of optical power and external magnetic field. ZnO-rGO acts as a photo detector under the visible range and NFO acts as a ferro magnetic material with high Curie temperature. D.C transport has been carried out through I-V measurement under variable optical power with magnetic field. There, the transport property of our device can be tuned under the variation of optical power but this variation is not so much prominent under different magnetic field. Additionally, A.C transport carried out through impedance spectroscopy measurement. The graphical nature of impedance spectroscopy revels the non-Debye type dielectric relaxation in the low frequency region. Theses graphs are also fitted with proper RC combinations to expose the interface morphology under variable conditions. Our investigation on ZnO-rGO/NFO heterostructure shows a very interesting opto-spintronics effect through magnetically tuning of photo current.