Partial correlations in NiNb amorphous alloys
| Autor: | Gy. Mészáros, S.L. Isakov, Erzsébet Sváb, S.N. Ishmaev, J. Takács, I.P. Sadikov |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Amorphous metal
Isotope Scattering Chemistry Coordination number Neutron diffraction Analytical chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Amorphous solid Crystallography Correlation function (statistical mechanics) Materials Chemistry Ceramics and Composites Structure factor |
| Zdroj: | Journal of Non-Crystalline Solids. 144:99-106 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/s0022-3093(05)80389-8 |
| Popis: | Short range order in amorphous Ni 44 Nb 56 was investigated using time-of-flight neutron diffraction. The total structure factors were measured for three isotope substituted Ni 44 Nb 56 samples with 58 Ni, 60 Ni, and 0 Ni (a mixture of 62 Ni and 60 Ni isotopes with zero average coherent scattering amplitude). The partial structure factors, the atomic and the density-concentration correlation functions were determined. The characteristic parameters of the short range order are given, i.e., the neighbouring atomic pair distances, their distribution width and the coordination numbers. The results are compared with those given in the literature for amorphous Ni 62 Nb 38 , and the concentration dependence is analyzed in the amorphous Ni Nb system. It is established that chemical short range order is stronger in Ni-rich samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|