XAFS and Neutron Diffraction Study of La1-xSr xCo1-yNbyO3
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
XVI International Synchrotron Radiation Conference
10-14 июл. 2006
,
Novosibirsk
|
| Журнал |
Nuclear Instruments and Methods in Physics Research Section A
ISSN: 0168-9002
|
| Вых. Данные |
Год: 2007,
Том: 575,
Номер: 1-2,
Страницы: 176-179
Страниц
: 4
DOI:
10.1016/j.nima.2007.01.061
|
| Ключевые слова |
Cobaltites, X-ray and neutron diffraction, XAFS |
| Авторы |
Efimov V.V.
1
,
Efimova E.A.
1
,
Karpinsky D.V.
2
,
Kochubey D.I.
3
,
Kriventsov V.V.
3
,
Kuzmin A.
4
,
Molodtsov S.L.
5
,
Sikolenko V.
1,6
,
Purans J.
7
,
Tiutiunnikov S.I.
1
,
Troyanchuk I.O.
2
,
Shmakov A.N.
3
,
Vyalikh D.
5
|
| Организации |
| 1 |
Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna 141980, Moscow Region, Russia
|
| 2 |
Institute of Solid State and Semiconductor Physics, 220072 Minsk, Belarus
|
| 3 |
Boreskov Institute of Catalysis, Lavrentiev prosp. 5, Novosibirsk 630090, Russia
|
| 4 |
Institute of Solid State Physics, Kengaraga Str. 8, LV-1063 Riga, Latvia
|
| 5 |
Institut für Kristallographie und Festkörperphysik (IKFP), Zellescher Weg 16, Physikgebäude C 115, 01069 Dresden, Germany
|
| 6 |
Hahn-Meitner-Institut Glienicker Str. 100, Berlin D-14109, Germany
|
| 7 |
Dipartimento di Fisica, Universita’di Trento, Via Sommarive 14, I-38050 Povo (Trento), Italy
|
|
Информация о финансировании (2)
|
1
|
Российский фонд фундаментальных исследований
|
06-02-81038
|
|
2
|
Белорусский республиканский фонд фундаментальных исследований
|
F06R-134
|
The effect of hole doping on the crystal and electronic structure of La1xSrxCo1yNbyO3 (y ¼ 0.0–0.25) at the x ¼ 0.0; 0.2; 0.5 has been studied by neutron diffraction and X-ray absorption spectroscopy at the Co K and L2,3-edges. The preliminary analysis of the Co K and L2,3-edges X-ray absorption near edge structure (XANES) in La1xSrxCo1yNbyO3 series suggests that upon niobium doping, an increase of the intermediate Co3+ spin state and a decrease of low spin Co4+ states contributions occur. The possible explanation of the observed changes of crystal and electronic structure in these cobaltites is discussed.