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KMID : 1059520110550030502
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Journal of the Korean Chemical Society
2011 Volume.55 No. 3 p.502 ~ p.508
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Synthesis, Structure and Characterization of Nd2XCd2-3XSiO4 (0.01≤X≤0.21) Solid-Solutions
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Ramesh, S.
Das, B.B.
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Abstract
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Synthesis of () [S1-S3: x=0.01, 0.11 and 0.21] solid solutions were prepared by solgel method. Powder x-ray diffraction (XRD) results show monoclinic unit cell with space group P21/m. The average crystallite sizes are found to be 20 to 45 nm. The Scanning Electron Microcopy (SEM) images show morphology of the sample is in globular nature. The energy dispersive analysis of x-rays (EDX) and X-ray mapping results confirmed that all the constituent elements of the composites were present and that were distributed in uniformly. The optical absorption band at ~750 nm was due to transition optically active ions. Electron Paramagnetic Resonance (EPR) lineshapes of S1-S3 at 10, 40, 77 and 300 K show a broad unresolved isotropic lineshapes were observed due to rapid spin lattice relaxation of .
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KEYWORD
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Nanocomposites, Sol-gel, X-ray diffraction, Optical properties, Electron paramagnetic resonance
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