The effect of spin fluctuations on the resistivities of 14 different $Fe sb{x}Ni sb{1-x}Zr sb2$ metallic glasses were analyzed in the temperature range from 4.2K to 80K. The corrections to the resistivity due to the superconductivity and quantum interference effects at very low temperatures were performed to obtain the spin fluctuation resistivity, $ rho sb{sf}$, as a function of temperature and composition. It is found that, $ rho sb{sf}$ varies as $T sp2$ at very low temperatures, i.e. below around 20K, and as T at higher temperatures. This confirms the predictions of the two-band model of Kaiser and Doniach and the one-band model of Rivier and Zlatic. The spin fluctuation temperatures for all the compositions, were determined from both models. $T sb{sf}$ calculated from the one-band model were about 30% higher than those calculated from the two-band model. The spin fluctuation temperature is lowest when the system is closest to the magnetic transition and it increases when the amount of magnetic species is reduced in the alloy, i.e. for x = 1, $T sb{sf}$ = 10K (15K) and for x = 0.4, $T sb{sf}$ = 64K (96K) for the two-band (one-band) model.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.59262 |
| Date | January 1989 |
| Creators | Dantu, Srilakshmi V. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Physics.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001067867, proquestno: AAIMM63456, Theses scanned by UMI/ProQuest. |
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