NDLI: Mössbauer effect studies of Tb$_{0.27}$Dy$_{0.73}$(Fe$_{1−x }$Co$

Content Provider	Springer Nature Link
Author	Bodnar, W. Szklarska Łukasik, M. Stoch, P. Zachariasz, P. Pszczoła, J. Suwalski, J.
Copyright Year	2010
Abstract	The synthesis of materials and the studies of crystal structure and $^{57}$Fe Mössbauer effect were performed for Tb$_{0.27}$Dy$_{0.73}$(Fe$_{1−x }$Co$_{x}$)$_{2}$ intermetallics. Terfenol-D (Tb$_{0.27}$Dy$_{0.73}$Fe$_{2}$) is the starting compound of this Fe/Co-substituted series. X-ray measurements showed evidence of a pure cubic Laves phase C15, MgCu$_{2}$-type, and unit cell parameters were determined across the series. A Co substitution introduced local area, at sub-nanoscale, with random Fe/Co neighbourhoods of the $^{57}$Fe atoms.Mössbauer effect spectra for the Tb$_{0.27}$Dy$_{0.73}$(Fe$_{1−x }$Co$_{x}$)$_{2}$ series at room temperature are composed of a number of locally originated subspectra due to the random distribution of Fe and Co atoms in the transition metal sublattice, and due to [1 1 1] an easy axis of magnetization. Isomer shift, magnetic hyperfine field and quadrupole interaction parameter were obtained from the spectra, both for the local area and for the bulk sample.As a result of Fe/Co substitution, a Slater-Pauling-type curve for the average magnetic hyperfine field vs. Co content was observed. It was found that the magnetic hyperfine fields corresponding to the local area also create a dependence of the Slater-Pauling-type vs. Co contribution in the Fe/Co neighbourhoods.
Starting Page	537
Ending Page	548
Page Count	12
File Format	PDF
ISSN	03044289
Journal	Pramana
Volume Number	75
Issue Number	3
e-ISSN	09737111
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-10-03
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Intermetallics crystal structure Laves phase Mössbauer effect hyperfine interaction Slater-Pauling dependence easy axis of magnetization Astrophysics and Astroparticles Astronomy, Observations and Techniques Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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