EXAFS and X-ray Diffractional Investigation of the Heusler-type Alloys Co2MnSi and Fe2.4Mn0.6Al.
Determination of the Ordering Probabilities
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Physica Status Solidi (A) Applied Research (1969-2004)
ISSN: 0031-8965
|
| Вых. Данные |
Год: 1984,
Том: 86,
Номер: 1,
Страницы: 117-124
Страниц
: 8
DOI:
10.1002/pssa.2210860111
|
| Ключевые слова |
COBALT METALLOGRAPHY - Order-Disorder; IRON AND STEEL METALLOGRAPHY - Order-Disorder; IRON MANGANESE ALUMINUM ALLOYS - Microstructure |
| Авторы |
Zschech E.
1
,
Blau W.
1
,
Vega H.
1
,
Kleinstück K.
1
,
Mager S.
2
,
Kozlov M.A.
3
,
Sheromov M.A.
4
|
| Организации |
| 1 |
Sektion Physik der Technischen Universitat Dresden, Mommsenstr. 13, DDR-8027 Dresden, GDR
|
| 2 |
Zentralinstitut fur Pestkorperphysik und Werkstofforschung der Akademie der Wissenschaften der DDR
|
| 3 |
Institute of Catalysis Academy of Sciences of the USSR, Siberian Branch, 630090 Novosibirsk, USSR
|
| 4 |
Institute of Nuclear Physics, Academy of Sciences of the USSR, Siberian Branch, 630090 Novosibirsk, USSR
|
|
The DO3 order of the Heusler-type alloys is proved by X-ray diffraction. The order of the transition metal atoms and consequently the degree of the L21 order are not provable because of the impossible task of distinguishing the transition metal atoms. Using EXAFS different occupation numbers of the lattice sites are obtained. The short-range order of Co2MnSi is almost ideally that of the Heusler-type, the Fe2.4Mn0.6Al alloy tends to the disordered DO3 structure. The reason behind the different order degree can be explained by the influence of electronegativity.