| Autor: |
W. A. Ferrando, A. I. Schindler, R. Segnan |
| Rok vydání: |
1972 |
| Předmět: |
|
| Zdroj: |
Physical Review B. 5:4657-4664 |
| ISSN: |
0556-2805 |
| DOI: |
10.1103/physrevb.5.4657 |
| Popis: |
A study of hyperfine magnetic fields at nuclei of $^{57}\mathrm{Fe}$ diffused as impurities in the transition-metal alloys Ni-Pt and Ni-Pd and at nuclei of $^{61}\mathrm{Ni}$ in the Ni-Pt system has been carried out using the M\"ossbauer-effect technique. The fields were measured as a function of composition and temperature on the atomically disordered alloys. The experimentally determined Curie temperatures ${T}_{C}$ and saturation hyperfine fields are presented for the entire composition range of each system. Analysis of the M\"ossbauer spectra of specific samples for various diffusion times of the $^{57}\mathrm{Fe}$ traces gives clear indication of iron impurity clustering within the Ni-Pd and Ni-Pt alloy matrices. A simple phenomenological theory is presented in an attempt to explain the ${T}_{C}$ vs concentration dependence in these alloys. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
