Comprehensive studies of structural, electronic and magnetic properties of Zn0.95Co0.5O nanopowders

Ivana Radisavljević, Nikola Novaković, Branko Matović, Novica Paunović, Mirjana Medić, Nenad Bundaleski, Velibor Andrić, Orlando M N D Teodoro

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

X-ray absorption (XANES, EXAFS, XMCD) and photoelectron (XPS) spectroscopic techniques were employed to study local structural, electronic and magnetic properties of Zn0.95Co0.5O nanopowders. The substitutional Co2+ ions are incorporated in ZnO lattice at regular Zn sites and the sample is characterized by high structural order. There was no sign of ferromagnetic ordering of Co magnetic moments and the sample is in paramagnetic state at all temperatures down to 5 K. The possible connection of the structural defects with the absence of ferromagnetism is discussed on the basis of theoretical calculations of the O K-edge absorption spectra.

Original languageEnglish
Pages (from-to)78-84
Number of pages7
JournalMaterials Research Bulletin
Volume74
DOIs
Publication statusPublished - 1 Feb 2016

Keywords

  • A. Oxides
  • A. Semiconductors
  • B. Magnetic properties
  • C. XAFS
  • D. Electronic structure

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