Compositional dependence of resistivity changes during structural relaxation in (Co, Fe) 75 Si 10 B 15 metallic glasses
Acta Metallurgica, ISSN: 0001-6160, Vol: 34, Issue: 10, Page: 1899-1904
1986
- 37Citations
- 5Captures
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Article Description
The compositional dependence of resistivity changes during structural relaxation in ( Co 1−x Fe x ) 75 Si 10 B 15 metallic glasses was examined. The behaviors of resistivity changes in both asquenched and pre-annealed samples depend greatly on the CoFe ratio and particularly the resistivity changes in (Co 0.75 Fe 0.25 ) 75 Si 10 B 15 metallic glass ( CoFe = 3 ) are extremely large. The reversible resistivity changes were clearly detected in pre-annealed Co-rich metallic glasses which contain both Co and Fe atoms. The present results suggest that the degree of short range ordering during structural relaxation is strongly affected by the CoFe ratio. Nous avons étudié la variation des changements de résistivité en fonction de la composition dans des verres métalliques (( Co 1−x Fe x ) 75 Si 10 B 15. Les comportements des changements de résistivité dans les échantillons bruts de trempe et pré-recuits dépendent fortement du rapport CoFe et en particulier les changements de résistivité dans le verre métallique (Co 0,75 Fe 0,25 ) 75 Si 10 B 15 sont extrêmement larges. Des changements de résistivité réversibles étaient nettement détectés dans des verres métalliques pré-recuits riches en cobalt contenant à la fois des atomes de cobalt et de fer. Nos résultats suggèrent que la mise en ordre à courte distance au cours de la relaxation structurale est fortement modifiée par le rapport CoFe. Die während der strukturellen Relaxation in (( Co 1−x Fe x ) 75 Si 10 B 15 -Metallgläsern auftretenden Änderungen im Widerstand wurden in Abhängigkeit von der Zusammensetzung untersucht, Das Verhalten der Widerstandsänderungen in abgeschreckten und angelassenen Proben hängt überwiegend von dem Verhältnis CoFe ab; die Widerstandsänderungen sind in dem Metallglas (Co 0,75 Fe 0,25 ) 75 Si 10 B 15 ( CoFe = 3 ) extrem groβ. Die reversiblen Widerstandsänderungen wurden in angelassenen Co-reichen Metallgläsern, die sowohl Co- als auch Fe-Atome enthalten, eindeutig gefunden. Diese Ergebnisse legen die Annahme nahe, daβ der Grad der Nahordnung während der strukturellen Relaxation von dem CoFe -Verhältnis stark beeinfluβt wird.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/0001616086902488; http://dx.doi.org/10.1016/0001-6160(86)90248-8; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0001540759&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/0001616086902488; http://dx.doi.org/10.1016/0001-6160%2886%2990248-8; https://dx.doi.org/10.1016/0001-6160%2886%2990248-8
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