X-ray and 57Fe Mössbauer study of sputtered FeZn alloys

✍ Scribed by A. Hauet; A. Laggoun; J. Teillet

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 440 KB
• Volume: 148
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(91)90872-k

✦ Synopsis

Fe~ ,Zn, alloys (0 < x < 0.8) were produced by simultaneous cathodic pulverization of iron and zinc. Metastablc crystalline phases were obtained: an a phase supersaturated with zinc, and a new ~¢ phase which can be indexed in an f.c.c, lattice and which presents two variants, 1¢~ with low zinc content and ~¢2 with more zinc. On annealing, the a and ~¢ phases are transformed into the stable phases a, U and F~. A M6ssbauer study at low temperatures showed the existence in as-sputtered samples of iron-rich clusters exhibiting superparamagnetic behaviour, and showed environments rich in iron or rich in zinc in the stable phases. The magnetic transitions are broad. The transition temperatures, hyperfine parameters and hyperfine field distributions at low temperatures are given and discussed.