Electron structure, valense state, X-ray spectra and surface morfhologies of the new CeM2P2 (M=Fe, Co, Ni) compounds
Abstract
High-energy spectroscopy has been used to study the electronic structure and valence state of new ternary intermetallic CeM2P2 (M=Fe, Co, Ni) compounds which crystallize in the ThCr2Si2 types. The calculations of electron energy bands E(k) and partial DOS for compounds were performed by the semi- relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions. Effective filling numbers of electrons in different bands of components in CeM2P2 (M=Fe, Co, Ni) compounds have been calculated. Analysis of the results of calculations showed that the degree of occupation of spd-valence orbital of components varies and differs considerably from of external electrons in isolated atoms. The occupancy of d-orbital of M in the CeM2P2 compounds was shown to be significantly larger than in an isolated state. The electron configuration of P in compounds can be described as s1.4p2.8. LIII – absorption spectra Ce in the ternary CeM2P2 (M=Fe, Co, Ni) compounds were obtained... at 78 K and 300 K using a tube spectrometer equipped with an RKD -01 coordinate detector. The mixed valence state of Ce was obtained in the investigated compounds. Surface morphologies CeM2P2 (M=Fe, Co, Ni) compounds are investigated by scanning tunneling microscopy (NT-MDT). The range scanning was 100 um x 100 um and 2 um x 2 um. The surface topography, distribution of grain diameter and area were obtained. The distribution of grain diameter and area of the CeM2P2 (M=Fe, Co, Ni) compounds is established. The picture of the distribution of the stiffness of the samples (amplitude and phase fluctuations) is obtained.
Keywords:
CeM2P2 compounds / surface morphology / electron structure / valence stateSource:
The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts, 2013, 98-98Publisher:
- Belgrade : Materials Research Society of Serbia
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Shcherba, Ivan D. AU - Uskoković, Dragan AU - Sacharevych, M. V. AU - Jatcyk, Bohdan M. PY - 2013 UR - https://dais.sanu.ac.rs/123456789/403 AB - High-energy spectroscopy has been used to study the electronic structure and valence state of new ternary intermetallic CeM2P2 (M=Fe, Co, Ni) compounds which crystallize in the ThCr2Si2 types. The calculations of electron energy bands E(k) and partial DOS for compounds were performed by the semi- relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions. Effective filling numbers of electrons in different bands of components in CeM2P2 (M=Fe, Co, Ni) compounds have been calculated. Analysis of the results of calculations showed that the degree of occupation of spd-valence orbital of components varies and differs considerably from of external electrons in isolated atoms. The occupancy of d-orbital of M in the CeM2P2 compounds was shown to be significantly larger than in an isolated state. The electron configuration of P in compounds can be described as s1.4p2.8. LIII – absorption spectra Ce in the ternary CeM2P2 (M=Fe, Co, Ni) compounds were obtained at 78 K and 300 K using a tube spectrometer equipped with an RKD -01 coordinate detector. The mixed valence state of Ce was obtained in the investigated compounds. Surface morphologies CeM2P2 (M=Fe, Co, Ni) compounds are investigated by scanning tunneling microscopy (NT-MDT). The range scanning was 100 um x 100 um and 2 um x 2 um. The surface topography, distribution of grain diameter and area were obtained. The distribution of grain diameter and area of the CeM2P2 (M=Fe, Co, Ni) compounds is established. The picture of the distribution of the stiffness of the samples (amplitude and phase fluctuations) is obtained. PB - Belgrade : Materials Research Society of Serbia C3 - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts T1 - Electron structure, valense state, X-ray spectra and surface morfhologies of the new CeM2P2 (M=Fe, Co, Ni) compounds SP - 98 EP - 98 UR - https://hdl.handle.net/21.15107/rcub_dais_403 ER -
@conference{ author = "Shcherba, Ivan D. and Uskoković, Dragan and Sacharevych, M. V. and Jatcyk, Bohdan M.", year = "2013", abstract = "High-energy spectroscopy has been used to study the electronic structure and valence state of new ternary intermetallic CeM2P2 (M=Fe, Co, Ni) compounds which crystallize in the ThCr2Si2 types. The calculations of electron energy bands E(k) and partial DOS for compounds were performed by the semi- relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions. Effective filling numbers of electrons in different bands of components in CeM2P2 (M=Fe, Co, Ni) compounds have been calculated. Analysis of the results of calculations showed that the degree of occupation of spd-valence orbital of components varies and differs considerably from of external electrons in isolated atoms. The occupancy of d-orbital of M in the CeM2P2 compounds was shown to be significantly larger than in an isolated state. The electron configuration of P in compounds can be described as s1.4p2.8. LIII – absorption spectra Ce in the ternary CeM2P2 (M=Fe, Co, Ni) compounds were obtained at 78 K and 300 K using a tube spectrometer equipped with an RKD -01 coordinate detector. The mixed valence state of Ce was obtained in the investigated compounds. Surface morphologies CeM2P2 (M=Fe, Co, Ni) compounds are investigated by scanning tunneling microscopy (NT-MDT). The range scanning was 100 um x 100 um and 2 um x 2 um. The surface topography, distribution of grain diameter and area were obtained. The distribution of grain diameter and area of the CeM2P2 (M=Fe, Co, Ni) compounds is established. The picture of the distribution of the stiffness of the samples (amplitude and phase fluctuations) is obtained.", publisher = "Belgrade : Materials Research Society of Serbia", journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts", title = "Electron structure, valense state, X-ray spectra and surface morfhologies of the new CeM2P2 (M=Fe, Co, Ni) compounds", pages = "98-98", url = "https://hdl.handle.net/21.15107/rcub_dais_403" }
Shcherba, I. D., Uskoković, D., Sacharevych, M. V.,& Jatcyk, B. M.. (2013). Electron structure, valense state, X-ray spectra and surface morfhologies of the new CeM2P2 (M=Fe, Co, Ni) compounds. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts Belgrade : Materials Research Society of Serbia., 98-98. https://hdl.handle.net/21.15107/rcub_dais_403
Shcherba ID, Uskoković D, Sacharevych MV, Jatcyk BM. Electron structure, valense state, X-ray spectra and surface morfhologies of the new CeM2P2 (M=Fe, Co, Ni) compounds. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:98-98. https://hdl.handle.net/21.15107/rcub_dais_403 .
Shcherba, Ivan D., Uskoković, Dragan, Sacharevych, M. V., Jatcyk, Bohdan M., "Electron structure, valense state, X-ray spectra and surface morfhologies of the new CeM2P2 (M=Fe, Co, Ni) compounds" in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):98-98, https://hdl.handle.net/21.15107/rcub_dais_403 .