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<p>This study investigates the structural, optical, and magnetic properties of a perovskite material, Cd<sub>0.5</sub>Ni<sub>0.5</sub>TiO<sub>3</sub> (CNTO), synthesized via the solid-state reaction method. The structural analysis of CNTO samples revealed a dependence on calcination conditions. Rietveld refinement of X-ray diffraction patterns showed that the sample calcinated at 800&#xa0;°C for 5&#xa0;h exhibited a trigonal structure with space group R3 (#148) and a minor secondary phase of TiO<sub>2</sub> with a tetragonal rutile structure (P4₂/mnm, #136). In contrast, calcination at 900&#xa0;°C for 10&#xa0;h yielded a pure rhombohedral ilmenite phase with no detectable secondary phase. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the formation of metal-oxygen bonds, and UV-Vis spectroscopy coupled with Tauc plot analysis determined a direct bandgap of 3.0 (± 0.015) eV. Magnetic measurements indicated room temperature paramagnetism (PM), suggesting a unique combination of optical and magnetic properties. These results position CNTO as a promising candidate for optoelectronic devices and magnetic sensor applications.</p>

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Structural, electronic, and magnetic characteristics of Cd0.5Ni0.5TiO3: a perovskite compound

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • Senthilkumar C,
  • Winfred Shashikanth F

摘要

This study investigates the structural, optical, and magnetic properties of a perovskite material, Cd0.5Ni0.5TiO3 (CNTO), synthesized via the solid-state reaction method. The structural analysis of CNTO samples revealed a dependence on calcination conditions. Rietveld refinement of X-ray diffraction patterns showed that the sample calcinated at 800 °C for 5 h exhibited a trigonal structure with space group R3 (#148) and a minor secondary phase of TiO2 with a tetragonal rutile structure (P4₂/mnm, #136). In contrast, calcination at 900 °C for 10 h yielded a pure rhombohedral ilmenite phase with no detectable secondary phase. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the formation of metal-oxygen bonds, and UV-Vis spectroscopy coupled with Tauc plot analysis determined a direct bandgap of 3.0 (± 0.015) eV. Magnetic measurements indicated room temperature paramagnetism (PM), suggesting a unique combination of optical and magnetic properties. These results position CNTO as a promising candidate for optoelectronic devices and magnetic sensor applications.