Doping dependent room-temperature ferromagnetism and structural properties of dilute magnetic semiconductor ZnO:Cu{sup 2+} nanorods Sharma, Prashant K. [Nanophosphor Application Centre, University of Allahabad, Allahabad 211002 (India)], E-mail: prashantnac@gmail.com; Dutta, Ranu K; Pandey, Avinash C [Nanophosphor Application Centre, University of Allahabad, Allahabad 211002 (India)] 36 MATERIALS SCIENCE; ASPECT RATIO; COPPER IONS; COPPER OXIDES; DOPED MATERIALS; FERROMAGNETISM; HYDROTHERMAL SYNTHESIS; MAGNETIC SEMICONDUCTORS; MORPHOLOGY; NANOSTRUCTURES; PARAMAGNETISM; SCANNING ELECTRON MICROSCOPY; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION; ZINC OXIDES Copper doped ZnO nanoparticles were synthesized by the chemical technique based on the hydrothermal method. The crystallite structure, morphology and size were determined by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM) for different doping percentages of Cu{sup 2+} (1-10%). TEM/SEM images showed formation of uniform nanorods, the aspect ratio of which varied with doping percentage of Cu{sup 2+}. The wurtzite structure of ZnO gradually degrades with the increasing Cu{sup 2+} doping concentration and an additional CuO associated diffraction peak was observed above 8% of Cu{sup 2+} doping. The change in magnetic behavior of the nanoparticles of ZnO with varying Cu{sup 2+} doping concentrations was investigated using a vibrating sample magnetometer (VSM). Initially these nanoparticles showed strong room-temperature ferromagnetic behavior, however at higher doping percentage of copper the ferromagnetic behavior was suppressed and paramagnetic nature was enhanced. Available from http://dx.doi.org/10.1016/j.jmmm.2009.07.066;INIS Netherlands 2009-12-15 English Journal Article Journal Name: Journal of Magnetism and Magnetic Materials; Journal Volume: 321; Journal Issue: 24; Other Information: DOI: 10.1016/j.jmmm.2009.07.066; PII: S0304-8853(09)00803-8; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA) Medium: X; Size: page(s) 4001-4005 https://doi.org/10.1016/j.jmmm.2009.07.066 [] 24 321 Journal ID: ISSN 0304-8853; JMMMDC; TRN: NL09S1078010147 NLN 2012-12-20 21259330