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Scherba, Ivan

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  • Scherba, Ivan (2)
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Author's Bibliography

Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds

Scherba, Ivan; Noga, Henrik; Antonov, Viktor; Zhak, Olga; Uskoković, Dragan; Jatcyk, Bohdan M.

(Belgrade : Materials Research Society of Serbia, 2018)

TY  - CONF
AU  - Scherba, Ivan
AU  - Noga, Henrik
AU  - Antonov, Viktor
AU  - Zhak, Olga
AU  - Uskoković, Dragan
AU  - Jatcyk, Bohdan M.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3668
AB  - We have studied experimentally and theoretically the electronic structure and x-ray absorption spectrum at the R.E.L3 - edge and x-ray emission spectra of Ni and P in the R.E.2Ni12P5 compounds. Crystal structure of the ternary phosphate Ce2Ni12P5 has been refined using X-ray powder diffraction pattern of the single phase sample with the same nominal composition, and the isotopic structure as for earlier known La2Ni12P5-type has been proved: space group P21/m, formula units Z = 2, lattice parameters are a = 1.07809(2) nm, b = 0.36869(1) nm, c = 1.31490(3) nm, b = 107.776(4), residual R-values are RI = 0.0681, RP = 0.0442 , RwP = 0.0603. The theoretical calculations have been carried out by means of the ab initio fully-relativistic spinpolarized Dirac linear muffin-tin orbital method. The calculations show good agreement with the experimental measurements. R.E.LIII - absorption spectra in ternary R.E.2Ni12P5 compounds were obtained at 78K and 300K using a tube spectrometer equipped with an RKD-01 co-ordinate detector. The mixed valence state of Ce and Eu was obtained in the Ce2Ni12P5 and Eu2Ni12P5 compounds.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
T1  - Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds
SP  - 109
EP  - 109
ER  - 
@conference{
author = "Scherba, Ivan and Noga, Henrik and Antonov, Viktor and Zhak, Olga and Uskoković, Dragan and Jatcyk, Bohdan M.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3668",
abstract = "We have studied experimentally and theoretically the electronic structure and x-ray absorption spectrum at the R.E.L3 - edge and x-ray emission spectra of Ni and P in the R.E.2Ni12P5 compounds. Crystal structure of the ternary phosphate Ce2Ni12P5 has been refined using X-ray powder diffraction pattern of the single phase sample with the same nominal composition, and the isotopic structure as for earlier known La2Ni12P5-type has been proved: space group P21/m, formula units Z = 2, lattice parameters are a = 1.07809(2) nm, b = 0.36869(1) nm, c = 1.31490(3) nm, b = 107.776(4), residual R-values are RI = 0.0681, RP = 0.0442 , RwP = 0.0603. The theoretical calculations have been carried out by means of the ab initio fully-relativistic spinpolarized Dirac linear muffin-tin orbital method. The calculations show good agreement with the experimental measurements. R.E.LIII - absorption spectra in ternary R.E.2Ni12P5 compounds were obtained at 78K and 300K using a tube spectrometer equipped with an RKD-01 co-ordinate detector. The mixed valence state of Ce and Eu was obtained in the Ce2Ni12P5 and Eu2Ni12P5 compounds.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018",
title = "Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds",
pages = "109-109"
}
Scherba, I., Noga, H., Antonov, V., Zhak, O., Uskoković, D.,& Jatcyk, B. M. (2018). Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds.
Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018Belgrade : Materials Research Society of Serbia., null, 109-109. 
Scherba I, Noga H, Antonov V, Zhak O, Uskoković D, Jatcyk BM. Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds. Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018. 2018;:109-109

Valence State Ce(Yb), Electron Structure and Physical Properties of New Ternary Intermetallic Compounds

Scherba, Ivan; Uskoković, Dragan; Kovalska, Maria V.

(Belgrade : Materials Research Society of Serbia, 2015)

TY  - CONF
AU  - Scherba, Ivan
AU  - Uskoković, Dragan
AU  - Kovalska, Maria V.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/830
AB  - High-energy spectroscopy (XES, XAS and XPS) has been used to study the electron structure of the investigated new ternary intermetallic compounds. In recent years there has been a continually increasing interest in investigation of ternary compounds with crystallize in the YNi9Si2, CeGa2Al2, Yb2Fe4Si9, ThMn12 and AlB2, which have a large variety of ground state properties. LIII -absorption spectra Ce(Yb) in ternary compounds were obtained at 80K and 300K using a tube spectrometer. The mixed valence state of Ce(Yb) was obtained in the investigation compounds. The measurements were carried out both with classical methods as well with the Mossbauer effect in order to establish parameters of the hyperfine interactions (only for confirm Fe atoms compounds). The calculations of electron energy bands E(k) and partial DOS for compounds new R.E.M2X2 were performed by the semi relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions A satisfactory agreement between theoretical and experimental data is achieved.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 2015, Herceg Novi, August 31– September 4, 2015
T1  - Valence State Ce(Yb), Electron Structure and Physical Properties of New Ternary Intermetallic Compounds
SP  - 66
EP  - 66
ER  - 
@conference{
author = "Scherba, Ivan and Uskoković, Dragan and Kovalska, Maria V.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/830",
abstract = "High-energy spectroscopy (XES, XAS and XPS) has been used to study the electron structure of the investigated new ternary intermetallic compounds. In recent years there has been a continually increasing interest in investigation of ternary compounds with crystallize in the YNi9Si2, CeGa2Al2, Yb2Fe4Si9, ThMn12 and AlB2, which have a large variety of ground state properties. LIII -absorption spectra Ce(Yb) in ternary compounds were obtained at 80K and 300K using a tube spectrometer. The mixed valence state of Ce(Yb) was obtained in the investigation compounds. The measurements were carried out both with classical methods as well with the Mossbauer effect in order to establish parameters of the hyperfine interactions (only for confirm Fe atoms compounds). The calculations of electron energy bands E(k) and partial DOS for compounds new R.E.M2X2 were performed by the semi relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions A satisfactory agreement between theoretical and experimental data is achieved.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 2015, Herceg Novi, August 31– September 4, 2015",
title = "Valence State Ce(Yb), Electron Structure and Physical Properties of New Ternary Intermetallic Compounds",
pages = "66-66"
}
Scherba, I., Uskoković, D.,& Kovalska, M. V. (2015). Valence State Ce(Yb), Electron Structure and Physical Properties of New Ternary Intermetallic Compounds.
Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 2015, Herceg Novi, August 31– September 4, 2015Belgrade : Materials Research Society of Serbia., null, 66-66. 
Scherba I, Uskoković D, Kovalska MV. Valence State Ce(Yb), Electron Structure and Physical Properties of New Ternary Intermetallic Compounds. Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 2015, Herceg Novi, August 31– September 4, 2015. 2015;:66-66