Abstract
Humidity sensing properties of NiFe2O4/CoCr2O4 nanocomposites ceramics were reported for the first time through chemical synthesis and mechanical mixing methods. The interaction of CoCr2O4 and NiFe2O4 was analyzed through X-ray diffraction, and the morphology of the samples was studied with Field emission scanning electron microscopy(FESEM). The results indicate that nonmetal elements act as interstitial ones to form the composite. As the amount of NiFe2O4 increased, the morphology of the nanocomposites changed from near-spherical to irregular cube-like shapes, with their particle sizes increasing over 10 nm. We studied elemental analysis using the EDX technique. Additionally, the resistance and humidity sensing responses become more noticeable, with desorption occurring slower than adsorption. The sensor takes 10 s to react and 15 s to recover. These findings provide a potential approach to creating large-scale chromate–ferrite composites and improving their structural, morphological, and humidity sensing properties, making them excellent candidates for humidity sensor applications.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request. The data that support the findings of this study are not openly available due to unpublished this work anywhere and are available from the corresponding author upon reasonable request.
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Acknowledgements
The authors extend their sincere appreciation to the Researchers Supporting Project number (RSPD2024R682), King Saud University, Riyadh, Saudi Arabia, for the support. We acknowledge the financial support provided by the National Science and Technology Council (NSTC) of the Republic of China through grant numbers NSTC-112-2112-M-259-017, NSTC-112-2811-M-259-012, NSTC-111-2112-M-259-013, NSTC-111-2811-M-259-009, and NSTC-111-2112-M-259-014.
Funding
This study was supported by Researchers Supporting Project number (RSPD2024R682), King Saud University, Riyadh, Saudi Arabia.
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KM: Conceptualization, Methodology, Software and Writing- Original MKH: Analysis, TEH: Analysis, AK: Analysis of humidity data, SYW: Analysis and editing, SSH: Synthesis, CB: Analysis of humidity data, VP: Analysis of humidity data, BP: editing, MU: Analysis of humidity data, JAV: Conceptualization, Methodology, Software, and Writing-Original.
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Manjunatha, K., Ho, MK., Hsu, TE. et al. Structure, microstructure, and enhanced sensing behavior of nickle ferrite–cobalt chromate for humidity sensor applications. J Mater Sci: Mater Electron 35, 471 (2024). https://doi.org/10.1007/s10854-024-12198-z
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DOI: https://doi.org/10.1007/s10854-024-12198-z