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Conspicuous Ferromagnetic and Optical Properties of Well-Rounded TiO2 Nano Grains Synthesized by Hydrothermal Technique

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In this work, we have reported the conspicuous ferromagnetic and optical properties of well-rounded nano grains of TiO2. Single crystalline well rounded nano grains have been synthesized by template free hydrothermal method combined with the adjustment of pH value in the reaction system. The detailed characteristics of well-rounded nano grains have been analyzed by employing X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), Raman spectroscopy, UV-visible spectroscopy and vibrating sample magnetometer (VSM). The Raman spectrum confirms its anatase tetragonal structure of well-rounded nano grains while EDX analysis suggests oxygen deficiency in synthesized TiO2 sample. Magnetic investigation betokens that the TiO2 nano grains possess ferromagnetic ordering at room temperature with saturation magnetization M s = 3.166 emu/g, remanence of M r = 0.287 emu/g and coercivity of H c = 160 Oe and UV-spectrum points direct band gap of 3.26 eV with prominent absorption in visible region.
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Document Type: Research Article

Publication date: 2012-04-01

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  • Journal of Spintronics and Magnetic Nanomaterials is an international multidisciplinary peer-reviewed journal reporting new developments in the fields of magnetic and spintronics materials including their synthesis, characterization, properties, and applications in electronics, photonics, telecommunications, computer sciences, medicine, health science, etc. JSM is the first journal devoted to the exciting field of spintronics, which is playing a fundamental role in the novel technological developments based on the new spin torque transfer phenomena.
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