title: The Crystal Structure of Micro- and Nanopowders of ZnS Studied by EPR of Mn2+and XRD.
abstract: The crystal structure of micro- and nanopowders of ZnS doped with different impurities was analyzed by the electron paramagnetic resonance (EPR) of Mn2+and XRD methods. The powders of ZnS:Cu, ZnS:Mn, ZnS:Co, and ZnS:Eu with the particle sizes of 5-7 μm, 50-200 nm, 7-10 μm, and 5-7 nm, respectively, were studied. Manganese was incorporated in the crystal lattice of all the samples as uncontrolled impurity or by doping. The Mn2+ions were used as EPR structural probes. It is found that the ZnS:Cu has the cubic structure, the ZnS:Mn has the hexagonal structure with a rhombic distortion, the ZnS:Co is the mixture of the cubic and hexagonal phases in the ratio of 1:10, and the ZnS:Eu has the cubic structure and a distorted cubic structure with stacking defects in the ratio 3:1. The EPR technique is shown to be a powerful tool in the determination of the crystal structure for mixed-polytype ZnS powders and powders with small nanoparticles. It allows observation of the stacking defects, which is revealed in the XRD spectra.
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine. vvnosenko@ukr.net.
authors.forename: Valentyna
authors.initials: V
authors.lastname: Nosenko
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Igor
authors.initials: I
authors.lastname: Vorona
authors.affiliation: Physics Department, Montana State University, Bozeman, MT, 59717, USA.
authors.forename: Valentyn
authors.initials: V
authors.lastname: Grachev
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Stanislav
authors.initials: S
authors.lastname: Ishchenko
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Nikolai
authors.initials: N
authors.lastname: Baran
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Yurii
authors.initials: Y
authors.lastname: Becherikov
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Anton
authors.initials: A
authors.lastname: Zhuk
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Yuliya
authors.initials: Y
authors.lastname: Polishchuk
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Vasyl
authors.initials: V
authors.lastname: Kladko
authors.affiliation: L.V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, 31, Pr. Nauky, Kyiv, 03028, Ukraine.
authors.forename: Alexander
authors.initials: A
authors.lastname: Selishchev
keywords: EPR; Lattice structure; Manganese ions; Paramagnetic defect; XRD; ZnS