Heterogeneous Structure of the Quaternary Metallic Glass Fe40Ni40P14B6: An EXAFS Investigation
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Journal of Non-Crystalline Solids
ISSN: 0022-3093
, E-ISSN: 1873-4812
|
| Вых. Данные |
Год: 1986,
Том: 86,
Номер: 3,
Страницы: 336-349
Страниц
: 14
DOI:
10.1016/0022-3093(86)90022-0
|
| Ключевые слова |
INTERMETALLICS - Amorphous; MATHEMATICAL TECHNIQUES - Algorithms |
| Авторы |
Zschech E.
1
,
Blau W.
1
,
Kleinstück K.
1
,
Hermann H.
2
,
Mattern N.
2
,
Kozlov M.A.
3
,
Sheromov M.A.
4
|
| Организации |
| 1 |
Sektion Physik der Technischen Universitat Dresden, 8027 Dresden, GDR
|
| 2 |
Zentralinstitut fur Festkorperphysik und Werkstofforschung der Akademie der Wissenschaften der DDR, 8027 Dresden, GDR
|
| 3 |
Institute Kataliza Sibirskogo Otdelenija Akademii Nauk SSSR, 630090 Nowosibirsk, USSR
|
| 4 |
Institut Jadernoj Fiziki Sibirskogo Otdelenija Akadernii Nauk SSSR, 630090 Nowosibirsk, USSR
|
|
The problems encountered in the analysis of EXAFS data from Fe40Ni40P14B6 are solved by assuming a micro-heterogeneous structure from chemically and structurally different micro-phases. A special Bayesian-type least-squares algorithm with general constraints was developed to reduce the effective number of free parameters, which fits simultaneously the EXAFS spectra at the NiK and the FeK edges and maximum prior knowledge as available. As a result of the analysis, the decomposition into micro-phase regions with Fe3B-type short-range order (52%) as well as random dense packed FeNiPB solid solution regions (48%) is proposed.