Abstract：
:Hexagonal Fe(3)Sn has many of the desirable properties for a new permanent magnet phase with a Curie temperature of 725 K, a saturation moment of 1.18 MA/m. and anisotropy energy, K1 of 1.8 MJ/m(3). However, contrary to earlier experimental reports, we found both experimentally and theoretically that the easy magnetic axis lies in the hexagonal plane, which is undesirable for a permanent magnet material. One possibility for changing the easy axis direction is through alloying. We used first principles calculations to investigate the effect of elemental substitutions. The calculations showed that substitution on the Sn site has the potential to switch the easy axis direction. However, transition metal substitutions with Co or Mn do not have this effect. We attempted synthesis of a number of these alloys and found results in accord with the theoretical predictions for those that were formed. However, the alloys that could be readily made all showed an in-plane easy axis. The electronic structure of Fe(3)Sn is reported, as are some are magnetic and structural properties for the Fe(3)Sn(2), and Fe(5)Sn(3) compounds, which could be prepared as mm-sized single crystals.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Sales BC,Saparov B,McGuire MA,Singh DJ,Parker DSdoi
10.1038/srep07024subject
Has Abstractpub_date
2014-11-12 00:00:00pages
7024issn
2045-2322pii
srep07024journal_volume
4pub_type
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