Studying the electronic structure of Cr{sub x}Ti{sub 1-x}Se{sub 2} by X-ray resonance and absorption spectroscopy

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776110061172· OSTI ID:22028192

Yarmoshenko, Yu M; Skorikov, N A; Merentsov, A I; Titov, A N ^[1]; Slepukhin, P A ^[2]; Marchenko, D E; Sperling, M ^[3]

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1. Russian Academy of Sciences, Ural Branch, Institute of Metal Physics (Russian Federation)
2. Russian Academy of Sciences, Ural Branch, Institute of Organic Synthesis (Russian Federation)
3. Helmholtz-Zentrum Berlin fuer Materialien und Energie (Germany)

Cr{sub x}Ti{sub 1-x}Se{sub 2} (x = 0-0.83) solid solutions have been synthesized. Single crystals have been grown in the range of concentrations x = 0-0.83. Structural studies of samples have revealed that chromium atoms substitute titanium in the TiSe{sub 2} matrix. The X-ray photoelectron spectra of the core levels, the resonance spectra of the valence bands in 1T-Cr{sub x}Ti{sub 1-x}Se{sub 2}, and the X-ray absorption spectra of titanium and chromium are studied. The titanium and chromium atoms are shown to have oxidation numbers of +4 and +3, respectively, in an identical octahedral environment. The local density of chromium states has been calculated. The results of the calculation agree well with the experimental data and indicate that the electronic 3d states of chromium substituting titanium in the matrix are spin-polarized and the density of chromium states is halfmetal magnet in behavior.

• OSTI ID: 22028192
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 112, Issue 1; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
CHROMIUM
CHROMIUM SELENIDES
CONCENTRATION RATIO
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
MAGNETISM
MONOCRYSTALS
OXIDATION
RESONANCE
SOLID SOLUTIONS
SPIN ORIENTATION
TITANIUM
TITANIUM SELENIDES
VALENCE
X RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY
X-RAY SPECTRA