Synthesis, Structure and Characterization of Nd

Journal of the Korean Chemical Society

B B Das¹  S Ramesh¹ 

关键词: ÀüÀÚ »óÀÚ¼º °ø¸í;    Nanocomposites;    Sol-gel;    X-ray diffraction;    Optical properties;    Electron paramagnetic resonance;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Synthesis of Nd2xCd2-3xSiO4 (0.01¡Âx¡Â0.21) [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 4I9/2¡æ 4F7/2 + 4S3/2 transition optically active Nd3+ 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 Nd3+.

【 授权许可】

Unknown