Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Synthesis, structure and properties of the layered CuxTiS2 compounds. / Titov, A. A.; Shkvarina, E. G.; Merentsov, A. I.; Doroshek, A. A.; Shkvarin, A. S.; Zhukov, Yu M.; Rybkin, A. G.; Pryanichnikov, S. V.; Uporov, S. A.; Titov, A. N.
в: Journal of Alloys and Compounds, Том 750, 25.06.2018, стр. 42-54.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Synthesis, structure and properties of the layered CuxTiS2 compounds
AU - Titov, A. A.
AU - Shkvarina, E. G.
AU - Merentsov, A. I.
AU - Doroshek, A. A.
AU - Shkvarin, A. S.
AU - Zhukov, Yu M.
AU - Rybkin, A. G.
AU - Pryanichnikov, S. V.
AU - Uporov, S. A.
AU - Titov, A. N.
PY - 2018/6/25
Y1 - 2018/6/25
N2 - A low-temperature layered phase CuxTiS2 (0 ≤ x ≤ 0.7) has been prepared. The occupation of both octahedral and tetrahedral sites by the copper atoms in the interlayer gap of the TiS2 lattice is revealed. The presence of two concentration regions of 0 ≤ x ≤ 0.3 and 0.5 ≤ x ≤ 0.7, which differ in the concentration dependence of the unit cell volume, has been observed. In the first region the unit cell volume increases with x, in the second region it decreases. This difference may be associated with the competition between Cu-Ti and Cu-S covalent centres. The electrical and magnetic properties of the materials are in a good agreement with this assumption. The electronic structure of CuxTiS2 in the low copper concentrations region has been studied using X-ray photoelectron, resonant photoelectron and absorption spectroscopy techniques. It was found that, in the low copper concentrations region, the charge transfer from Cu to the conduction band of TiS2 along with the formation of covalent centres is observed.
AB - A low-temperature layered phase CuxTiS2 (0 ≤ x ≤ 0.7) has been prepared. The occupation of both octahedral and tetrahedral sites by the copper atoms in the interlayer gap of the TiS2 lattice is revealed. The presence of two concentration regions of 0 ≤ x ≤ 0.3 and 0.5 ≤ x ≤ 0.7, which differ in the concentration dependence of the unit cell volume, has been observed. In the first region the unit cell volume increases with x, in the second region it decreases. This difference may be associated with the competition between Cu-Ti and Cu-S covalent centres. The electrical and magnetic properties of the materials are in a good agreement with this assumption. The electronic structure of CuxTiS2 in the low copper concentrations region has been studied using X-ray photoelectron, resonant photoelectron and absorption spectroscopy techniques. It was found that, in the low copper concentrations region, the charge transfer from Cu to the conduction band of TiS2 along with the formation of covalent centres is observed.
KW - Crystal structure
KW - Electronic structure
KW - Intercalated compounds
KW - Layered phase
KW - Physical properties
KW - Titanium dichalcogenides
KW - RESONANT PHOTOEMISSION
KW - CO
KW - DISULFIDE
KW - TIS2
KW - POLARON SHIFT
KW - TITANIUM DICHALCOGENIDES
KW - METAL
KW - INTERCALATION COMPOUNDS
KW - SCATTERING
KW - FE
UR - http://www.scopus.com/inward/record.url?scp=85056468003&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2018.03.376
DO - 10.1016/j.jallcom.2018.03.376
M3 - Article
AN - SCOPUS:85056468003
VL - 750
SP - 42
EP - 54
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -
ID: 36287875