排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
Batulin R. G. Cherosov M. A. Gil’mutdinov I. F. Khaliulin B. F. Kiiamov A. G. Klekovkina V. V. Malkin B. Z. Mukhamedshin I. R. Mumdzhi I. E. Nikitin S. I. Rodionov A. A. Yusupov R. V. 《Physics of the Solid State》2019,61(5):818-825
Physics of the Solid State - Cubic Y2Ti2O7 single crystals doped with Er3+ or Yb3+ ions have been studied by the methods of electron spin resonance (ESR) and selective laser spectroscopy. ESR... 相似文献
2.
V. V. Klekovkina R. R. Gainov F. G. Vagizov A. V. Dooglav V. A. Golovanevskiy I. N. Pen’kov 《Optics and Spectroscopy》2014,116(6):885-888
The ground state band structure, magnetic moments, charges and population numbers of electronic shells of Cu and Fe atoms have been calculated for chalcopyrite CuFeS2 using density functional theory. The comparison between our calculation results and experimental data (X-ray photoemission, X-ray absorption and neutron diffraction spectroscopy) has been made. Our calculations predict a formal oxidation state for chalcopyrite as Cu1+Fe3+S 2 2? . However, the assignment of formal valence state to transition metal atoms appears to be oversimplified. It is anticipated that the valence state can be confirmed experimentally by nuclear magnetic and nuclear quadrupole resonance and Mössbauer spectroscopy methods. 相似文献
3.
R. R. Gainov F. G. Vagizov V. A. Golovanevskiy V. A. Ksenofontov G. Klingelhöfer V. V. Klekovkina T. G. Shumilova I. N. Pen’kov 《Hyperfine Interactions》2014,226(1-3):51-55
Nuclear resonance methods, including Mössbauer spectroscopy,are considered as unique techniques suitable for remote on-line mineralogical analysis. The employment of these methods provides potentially significant commercial benefits for mining industry. As applied to copper sulfide ores, Mössbauer spectroscopy method is suitable for the analysis noted. Bornite (formally Cu5FeS4) is a significant part of copper ore and identification of its properties is important for economic exploitation of commercial copper ore deposits. A series of natural bornite samples was studied by 57Fe Mössbauer spectroscopy. Two aspects were considered: reexamination of 57Fe Mössbauer properties of natural bornite samples and their stability irrespective of origin and potential use of miniaturized Mössbauer spectrometers MIMOS II for in-situ bornite identification. The results obtained show a number of potential benefits of introducing the available portative Mössbauer equipment into the mining industry for express mineralogical analysis. In addition, results of some preliminary 63,65Cu nuclear quadrupole resonance (NQR) studies of bornite are reported and their merits with Mössbauer techniques for bornite detection discussed. 相似文献
4.
In terms of a semiphenomenological exchange charge model, we have obtained estimates of parameters of the crystal field and parameters of the electron-deformation interaction in terbium titanate Tb2Ti2O7 with a pyrochlore structure. The obtained set of parameters has been refined based on the analysis of spectra of neutron inelastic scattering and Raman light scattering, field dependences of the forced magnetostriction, and temperature dependences of elastic constants. 相似文献
1