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標題:Study of Structural, Morphological and Electrical Properties of Ce doped NiFe2O4 Nanoparticles and Their Electronic Structure Investigation
學年102
學期1
出版(發表)日期2013/12/25
作品名稱Study of Structural, Morphological and Electrical Properties of Ce doped NiFe2O4 Nanoparticles and Their Electronic Structure Investigation
作品名稱(其他語言)
著者Gagan Dixit; Jitendra Pal Singh; Chen, C. L.; Dong, C. L. ; R. C. Srivastava; H. M. Agrawal; Pong, W. F. ; K. Asokan
單位淡江大學物理學系
出版者Amsterdam: Elsevier BV
著錄名稱、卷期、頁數Journal of Alloys and Compounds 581(25), pp.178–185
摘要Present work reports the structural, morphological, electrical properties of the Ce doped nickel ferrite (NiFe2O4) compounds and their electronic structures studied by X-ray absorption spectroscopy. The samples of NiFe2−xCexO4 (x = 0.0–0.10) were prepared by the chemical route and sintered at 1100 °C for 3 h. X-ray diffraction patterns of these sintered pellets show that Ce doped samples exhibit pure spinel phase up to x = 0.03. With increase of Ce concentration the crystallite size of the samples change randomly, however lattice parameters do not exhibit any significant change. Temperature dependent resistivity shows semiconducting nature for all the compositions. Sample with Ce concentration x = 0.04 shows maximum resistivity. The sample with x = 0.02 shows highest dielectric constant in the frequency range of 75 kHz–1 MHz at room temperature. The observed results are discussed on the basis of change in the electronic structure of these compounds with the Ce concentration. It has been observed that valence state of Ce ion is playing dominant role in determining the electrical and dielectric properties of the synthesized system.
關鍵字Ferrites;Dielectric constant;Electrical resistivity;Local electronic structure
語言英文
ISSN1873-4669
期刊性質國外
收錄於SCI;
產學合作
通訊作者Gagan Dixit
審稿制度
國別瑞士
公開徵稿
出版型式,電子版,紙本
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