Publication: Nanocrystallization in amorphous Fe<inf>40</inf>Ni<inf>40</inf>(Si+B)<inf>19</inf>Mo<inf>1-2</inf>ribbons
Issued Date
2004-07-01
Resource Type
ISSN
03048853
Other identifier(s)
2-s2.0-2942568040
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Magnetism and Magnetic Materials. Vol.278, No.1-2 (2004), 172-178
Suggested Citation
S. Saiseng, P. Winotai, S. Nilpairuch, P. Limsuwan, I. M. Tang Nanocrystallization in amorphous Fe<inf>40</inf>Ni<inf>40</inf>(Si+B)<inf>19</inf>Mo<inf>1-2</inf>ribbons. Journal of Magnetism and Magnetic Materials. Vol.278, No.1-2 (2004), 172-178. doi:10.1016/j.jmmm.2003.11.404 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/21431
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Nanocrystallization in amorphous Fe<inf>40</inf>Ni<inf>40</inf>(Si+B)<inf>19</inf>Mo<inf>1-2</inf>ribbons
Author(s)
Other Contributor(s)
Abstract
Cut Fe40Ni40(Si+B)19Mo1-2ribbons were annealed for 2 h at various temperatures between 350°C and 600°C. XRD and Mossbauer effect spectroscopy (ME) measurements were then performed on all of the ribbons. The magnetic properties of several ribbons were measured using a vibrating sample magnetometer (VSM). A differential thermal analysis scan (over the range 20-800°C) of the as-cast ribbon showed two phase transitions; the first at 454°C and the second at 525°C. Both the XRD and ME spectra of the as cast, the 350°C and 400°C annealed ribbons showed that they were amorphous. The ME spectra of the 450°C, 475°C and 500°C annealed ribbons showed that these ribbons contained α-Fe, α-Fe(Si) and t-Fe2B nanocrystallites. For the ribbons annealed above 550°C, crystallites of t-Fe2B, t-Fe3B, t-Fe5SiB2and FCC-FeNi appeared, with the α-Fe and α-Fe(Si) crystallites disappearing. The sextets of all of the Fe compounds appeared in the ME spectra of the 525°C annealed ribbon. The VSM measurements supported the picture of a two-stage phase transitions; amorphous phase→a nanocrystalline phase (Fe-containing nanocrystallites in an amorphous matrix) at 454°C and then a second transition, the nanocrystalline phase→a disordered alloy containing Fe-B and Fe-Ni crystallites at 525°C. © 2004 Elsevier B.V. All rights reserved.