A Comparison of Thermal Annealing and Ion Beam Mixing in the Fe/Al Bilayer

A brief overview of thermal annealing and ion beam mixing of thin solid film structures is presented. Some important experimental results of previous works on the Fe/Al bilayer system submitted to both metallurgical treatments are complemented by Rutherford backscattering spectroscopy study of the ion mixed samples. On the basis of the conversion electron Mossbauer spectroscopy data some information is obtained about the reaction kinetics of the Fe2Al5 phase formed by ion mixing. A comparison is then made of the interdiffusion and reaction behaviour of the Fe/Al bilayer under controlled temperature and ion bombardment. Eine kurze ubersicht uber die thermische Anlassbehandlung und lonenstrahlmischung in Dunn-schichtstrukturen wird dargestellt. Einige wichtige experimentelle Ergebnisse fruherer Arbeiten im Fe/Al Doppelschichtsystem werden hier mit einer Rutherford-Ruckstreu-Analyse ionenstrahl-gemischter Proben erganzt. Anhand von Mosbauerspektroskopie-Daten wird die Reaktionskinetik dcr Fe2Al5 Phase unter lonenbestrahlung aufgeklart. Zuletzt wird die Interdiffusion und das Reak-tionsverhalten der Fe/Al Doppelschicht unter thermischer Anlassung und lonenstrahlmischung verglichen.

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