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<p>Infrared spectroscopy is used to examine the concentration-dependent elastic nature of Nickel &amp; Zinc ferrite nanoparticles when iron is replaced by Cu/Co in small quantities. Stiffness constants (C11, C12), longitudinal (V<sub><i>l</i></sub>), shear (V<sub><i>t</i></sub>) velocities are assessed and verified. The values of Poisson’s ratio (σ), elastic moduli values (viz i.e., Rigidity Modulus (G), Bulk Modulus (K), and Young’s Modulus (<i>E</i>)) are calculated with changing concentration. Debye temperature realising from Anderson and Waldron formulae exhibits reverse trend for both the doped cations. The gas sensing response of undoped NZF, NZCu<sub>0.03</sub>F and NZCo<sub>0.04</sub> F samples for the Acetone gas reveals much higher response than for Hydrogen and ethanol gas atmospheres. Tested samples exhibit superior performance for acetone with fast response and recovery time. Pure sample (NZF) and NZCu<sub>0.03</sub>F displays n-type behavior, whereas, NZCo<sub>0.04</sub>F verified n-type for below 250&#xa0;°C and p-type behavior above 250&#xa0;°C in Acetone atmosphere. The outcome of our results verified the dopant reliant elastic features and sensing suitability of the tested ferrite materials.</p>

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Elastic behaviour and gas sensing properties of substituted Ni–Zn nano crystalline ferrites

  • 期刊论文

  • 发表日期：

    2025年2月23日

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  • V. Lakshmi Savithri Vatsalya,
  • G. Sunita Sundari,
  • K. Siva Maha Laxmi,
  • Sankeshi Supraja,
  • Ch.S. Lakshmi

摘要

Infrared spectroscopy is used to examine the concentration-dependent elastic nature of Nickel & Zinc ferrite nanoparticles when iron is replaced by Cu/Co in small quantities. Stiffness constants (C11, C12), longitudinal (Vl), shear (Vt) velocities are assessed and verified. The values of Poisson’s ratio (σ), elastic moduli values (viz i.e., Rigidity Modulus (G), Bulk Modulus (K), and Young’s Modulus (E)) are calculated with changing concentration. Debye temperature realising from Anderson and Waldron formulae exhibits reverse trend for both the doped cations. The gas sensing response of undoped NZF, NZCu0.03F and NZCo0.04 F samples for the Acetone gas reveals much higher response than for Hydrogen and ethanol gas atmospheres. Tested samples exhibit superior performance for acetone with fast response and recovery time. Pure sample (NZF) and NZCu0.03F displays n-type behavior, whereas, NZCo0.04F verified n-type for below 250 °C and p-type behavior above 250 °C in Acetone atmosphere. The outcome of our results verified the dopant reliant elastic features and sensing suitability of the tested ferrite materials.