TY - JOUR
T1 - Comprehensive studies of structural, electronic and magnetic properties of Zn0.95Co0.5O nanopowders
AU - Radisavljević, Ivana
AU - Novaković, Nikola
AU - Matović, Branko
AU - Paunović, Novica
AU - Medić, Mirjana
AU - Bundaleski, Nenad
AU - Andrić, Velibor
AU - Teodoro, Orlando M N D
N1 - The research leading to these results has received funding from the European Community's Seventh Framework programme (FP7/2007-2013) under the Grant agreement No. 226716 and is supported by Serbian Ministry of Education, Science and Technological Development under the Grant No. III 45012, the Program of scientific and technological cooperation between Republic of Serbia and Republic of Portugal under the Grant No.451-03-02328/2012-14/03 and the Portuguese Research Grant Pest-OE/FIS/UI0068/2011 through FCT-MEC. The authors gratefully acknowledge HASYLAB @ DESY and ELETTRA for providing the beamtime. A1 and CiPo beamline scientists, in particular E. Welter (DESY) and N. Zema (ELETTRA), are acknowledged for the assistance during the XAFS/XMCD measurements.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - 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.
AB - 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.
KW - A. Oxides
KW - A. Semiconductors
KW - B. Magnetic properties
KW - C. XAFS
KW - D. Electronic structure
UR - http://www.scopus.com/inward/record.url?scp=84944789669&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2015.10.014
DO - 10.1016/j.materresbull.2015.10.014
M3 - Article
AN - SCOPUS:84944789669
SN - 0025-5408
VL - 74
SP - 78
EP - 84
JO - Materials Research Bulletin
JF - Materials Research Bulletin
ER -