Pr2M2O7 (M=Zr, Hf) Local and Crystal Structure Changes in a Fluorite-Pyrochlore Phase Transition Научная публикация
| Конференция |
Международная конференция «Плазменные, лазерные исследования и технологии» (ПЛИТ 2016) 25-27 янв. 2016 , Москва |
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| Журнал |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
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| Вых. Данные | Год: 2016, Том: 747, Номер статьи : 012038, Страниц : 5 DOI: 10.1088/1742-6596/747/1/012038 | ||||
| Ключевые слова | NANOCRYSTALLINE STRUCTURES; Ln2HF2O7; Ln; SYSTEMS; Gd; Dy | ||||
| Авторы |
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Реферат:
The formation of nanocrystal powders of Pr2M2O7 (M=Zr, Hf) compounds upon calcinations up to 1400°C has been investigated by using of X-ray absorption fine structure (XAFS) spectroscopy combined with X-ray powder diffraction (XRD). The structure ordering upon calcination was estimated independently from XRD and EXAFS data. It was found that the phase transition fluorite-pyrochlore occurs at calcination temperature in the range of 900–1000°C. The appearance of the ordered pyrochlore structure at calcination temperatures above 1000°C was manifested as splitting of the first oxygen coordination shell of the local praseodymium environment and supported by a sharp reduction of the Debye-Waller factor values of interatomic bonds. Besides we observed the L3-Hf X-ray absorption near edge line shape splitting with increasing of annealing temperature of amorphous precursor due to crystal field influence in high ordered pyrochlore-type structure.
Библиографическая ссылка:
Menushenkov A.P.
, Popov V.V.
, Gaynanov B.R.
, Zubavichus Y.V.
Pr2M2O7 (M=Zr, Hf) Local and Crystal Structure Changes in a Fluorite-Pyrochlore Phase Transition
Journal of Physics: Conference Series. 2016.
V.747. 012038
:1-5. DOI: 10.1088/1742-6596/747/1/012038
WOS
Scopus
РИНЦ
CAPlus
OpenAlex
Pr2M2O7 (M=Zr, Hf) Local and Crystal Structure Changes in a Fluorite-Pyrochlore Phase Transition
Journal of Physics: Conference Series. 2016.
V.747. 012038
:1-5. DOI: 10.1088/1742-6596/747/1/012038
WOS
Scopus
РИНЦ
CAPlus
OpenAlex
Файлы:
Полный текст от издателя
Даты:
| Поступила в редакцию: | 1 сент. 2016 г. |
| Опубликована в печати: | 1 сент. 2016 г. |
| Опубликована online: | 21 сент. 2016 г. |
Идентификаторы БД:
| Web of science: | WOS:000387066400038 |
| Scopus: | 2-s2.0-84992154232 |
| РИНЦ: | 27581546 |
| Chemical Abstracts: | 2016:1945889 |
| OpenAlex: | W2522931050 |