Structural, spectroscopic and magnetic characterization of undoped, Ni2+ doped ZnO nanopowders

被引：31

作者：

Babu, B. ^{[1
]}

Sundari, G. Rama ^{[1
]}

Ravindranadh, K. ^{[1
]}

Yadav, M. Rajesh ^{[1
]}

Ravikumar, R. V. S. S. N. ^{[1
]}

机构：

[1] Acharya Nagarjuna Univ, Univ Coll Sci, Dept Phys, Nagarjuna Nagar 522510, Andhra Pradesh, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 372卷

关键词：

ZnO; Chemical synthesis; X-ray diffraction; Infrared spectroscopy; Crystal structure; Electronic paramagnetic resonance; ROOM-TEMPERATURE FERROMAGNETISM; SOLID-STATE REACTION; NANORODS; PHOTOLUMINESCENCE; NI(II); IONS;

D O I：

10.1016/j.jmmm.2014.07.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structural, magnetic and optical properties of undoped and Ni2+ doped ZnO nanopowders have been prepared by sonochemical assistance. Powder XRD studies confirm the hexagonal structure of both undoped and Ni2+ doped of ZnO nanopowders and its average crystallite sizes are evaluated. Optical absorption and Electron Paramagnetic Resonance spectral data confirmed the site symmetry for Ni2+ ions as octahedral. Photoluminescence spectra exhibited the emission bands in ultraviolet and blue regions at an excitation wavelength of 328 nm. FT-IR spectra showed the characteristic vibrational bands of Zn-O. Vibrating sample magnetometer was used for the magnetic property investigations and indicates room temperature ferromagnetism which is intrinsic in nature and attributed to oxygen and/or Zn deficiencies. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：79 / 85

页数：7

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