Solvothermal synthesis of In2-xCoxO3 (0.05 ≤ x ≤ 0.15) dilute magnetic semiconductors: Optical, magnetic, and dielectric properties

Sarvari Khatoon, Kelsey Coolahan, Samuel E. Lofland, Tokeer Ahmad

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Highly crystalline and monophasic nanoparticles of In2-xCo xO3 (0.05 ≤ x ≤ 0.15) were successfully synthesized by the solvothermal method through an oxalate precursor route. Collective evidence from X-ray diffraction and reflectance measurements suggest that the Co2+ is incorporated into the In2O3 lattice site. Effect of cobalt dopant on the growth and morphology of indium oxide was studied by transmission electron microscopy. It has been observed that particle size decreases from 23 to 9 nm on increasing the Co concentration. High surface area has been obtained, with values ranging between 66 and 151 m2/g, respectively. Values for the dielectric constant were around 40. All these solid solutions show paramagnetic behavior with weak antiferromagnetic interactions.

Original languageEnglish (US)
Pages (from-to)2544-2550
Number of pages7
JournalJournal of the American Ceramic Society
Issue number8
StatePublished - Aug 2013

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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