Study of negative permittivity behavior Sr7Mn4O15-SrO nanocomposite

Authors

  • Gurudeo Nirala A research scholar
  • Harish Verma
  • Rajni Baranwal A research scholar
  • Shail Upadhyay Associate professor

DOI:

https://doi.org/10.61343/jcm.v1i02.17

Keywords:

Sr7Mn4O15; Composite; Negative permittivity; Drude-Lorentz model.

Abstract

Negative permittivity has been researched extensively in a wide range of metamaterials and composites. Using a solid-state ceramic route, a composite of Sr7Mn4O15 - SrO has been produced. Above a specified temperature (Tc), a change in permittivity sign from positive to negative is observed at all measured frequencies (10 Hz-2MHz). Experimental data of real part of permittivity was fitted to Drude-Lorentz oscillator model. Plasma oscillations of thermally excited free carriers have been identified as the cause of negative permittivity. High temperature plasma plasmonic activity of synthesized composite make it promising metamaterial for electromagnetic devices working in the radio frequency (10 Hz -2MHz) range.

Author Biographies

Gurudeo Nirala, A research scholar

Department of Physics, IIT BHU Varanasi, U.P., India

Rajni Baranwal, A research scholar

Department of Physics, IIT BHU Varansi, U.P., India

Shail Upadhyay, Associate professor

Department of Physics, IIT BHU Varansi, U.P., India

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Published

2023-12-01

How to Cite

1.
Gurudeo Nirala, Verma H, Rajni Baranwal, Upadhyay S. Study of negative permittivity behavior Sr7Mn4O15-SrO nanocomposite. J. Cond. Matt. [Internet]. 2023 Dec. 1 [cited 2024 Nov. 21];1(02):90-3. Available from: https://jcm.thecmrs.in/index.php/j/article/view/17

Issue

Vol. 1 No. 02 (2023): Jul-Dec

Section

Research Article

Categories

License

Copyright (c) 2023 Gurudeo Nirala, Harish Verma, Rajni Baranwal, Shail Upadhyay

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

1. All articles published in this journal are licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

2. Article are open access and can be downloaded and cited.

 

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