Повнотекстовий пошук
Пошуковий запит: (<.>A=Rogulis U$<.>) |
Загальна кількість знайдених документів : 2
Представлено документи з 1 до 2
|
1. |
Antuzevics A. Crystalline phase detection in glass ceramics by EPR spectroscopy [Електронний ресурс] / A. Antuzevics, U. Rogulis, A. Fedotovs, A. I. Popov // Физика низких температур. - 2018. - Т. 44, № 4. - С. 449-454. - Режим доступу: http://nbuv.gov.ua/UJRN/PhNT_2018_44_4_14 The advances of EPR spectroscopy for the detection of activators as well as determining their local structure in the crystalline phase of glass ceramics is considered. The feasibility of d-element (Mn<^>2+, Cu<^>2+) and f-element (Gd<^>3+, Eu<^>2+) ion probes for the investigation of glass ceramics is discussed. In the case of Mn<^>2+, the information is obtained from the EPR spectrum superhyperfine structure, for Gd<^>3+ and Eu<^>2+ probes - from the EPR spectrum line structure, whereas for Cu<^>2+ ions the changes in the EPR spectrum shape could be useful. The examples of EPR spectra of the above-mentioned probes in oxyfluoride glass ceramics are illustrated.
| 2. |
Rogulis U. Optical detection of paramagnetic centres: from crystals to glass-ceramics [Електронний ресурс] / U. Rogulis // Физика низких температур. - 2016. - Т. 42, № 7. - С. 689-693. - Режим доступу: http://nbuv.gov.ua/UJRN/PhNT_2016_42_7_5 An unambiguous attribution of the absorption spectra to definite paramagnetic centres identified by the EPR techniques in the most cases is problematic. This problem may be solved by applying of a direct measurement techniques - the EPR detected via the magnetic circular dichroism, or briefly MCD-EPR. The present survey reports on the advantages and disadvantages applying the MCD-EPR techniques to simple and complex paramagnetic centres in crystals as well as glasses and glass-ceramics.
|
|
|