NDLI: Mössbauer study of incompletely alloyed nanocrystalline Fe100 − x Al x prepared by high energy ball milling

Content Provider	Springer Nature Link
Author	Sebastian, Varkey Lakshmi, N. Venugopalan, K.
Copyright Year	2007
Abstract	Mechanically alloyed Fe100 − x Al x powders, with 20≤ x ≤90, have been studied by X-ray diffraction and room temperature 57Fe Mössbauer spectroscopy. The milling time was chosen such that complete alloying does not take place. For a fixed milling time of 10 h, the rate of alloying was seen to increase exponentially with increase in Fe content. Mössbauer spectra of all the samples consist of a broad magnetic sextet and a quadrupole doublet. The isomer shifts and quadrupole splitting of the doublets are typical of Al-rich, Fe–Al alloys. The area under the quadrupole doublet is a maximum for x = 66. Analysis of the Mössbauer spectra indicates the formation off- stoichiometric Fe3Al phase for x < 66, while the formation of Fe clusters is largely responsible for the magnetic hyperfine component in x ≥ 66 compositions.
Starting Page	127
Ending Page	135
Page Count	9
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	174
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-07-20
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Mechanical alloying Mössbauer spectroscopy Iron aluminides Magnetic properties Surfaces and Interfaces, Thin Films Condensed Matter Atoms, Molecules, Clusters and Plasmas Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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