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Structural characterization, optical and magnetic properties of Ni-doped CdO dilute magnetic semiconductor nanoparticles

Published online by Cambridge University Press:  12 April 2013

Tokeer Ahmad ,
Sarvari Khatoon ,
Kelsey Coolahan  and
Samuel E. Lofland
Tokeer Ahmad*
Affiliation:
Department of Chemistry, Nanochemistry Laboratory, Jamia Millia Islamia, New Delhi-110025, India
Sarvari Khatoon
Affiliation:
Department of Chemistry, Nanochemistry Laboratory, Jamia Millia Islamia, New Delhi-110025, India
Kelsey Coolahan
Affiliation:
Department of Physics and Astronomy, Rowan University, Glassboro, New Jersey 08028
Samuel E. Lofland
Affiliation:
Department of Physics and Astronomy, Rowan University, Glassboro, New Jersey 08028
*
a)Address all correspondence to this author. e-mail: tahmad3@jmi.ac.in
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Abstract

A simple and modified solvothermal method using oxalate precursor, used to synthesize Cd1−xNixO (x = 0.047, 0.102, and 0.163) nanoparticles and their phase structure, morphology, optical and magnetic properties, have been investigated. X-ray diffraction studies revealed that as-prepared Ni-doped CdO solid solutions are highly crystalline and stabilized in a monophasic cubic CdO structure. X-ray diffraction and ICP-MS studies confirmed the incorporation of Ni2+ in a CdO matrix. The average grain size was found to be 30, 15, and 11 nm, respectively, using transmission electron microscopic studies. High surface area in the range of 118–143 m2/g has been achieved for these solid solutions using the multipoint BET method, which increases on increasing Ni concentration in Cd lattice site. The optical band gap of these solid solutions shows red shift to the undoped CdO. Ni-doped CdO nanoparticles exhibit co-existence of paramagnetism and ferromagnetism.

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Articles
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Journal of Materials Research , Volume 28 , Issue 9 , 14 May 2013 , pp. 1245 - 1253
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Copyright © Materials Research Society 2013 

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