Reference : A study of the high temperature spin reorientation in YCoFe/sub 3/B
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/33152
A study of the high temperature spin reorientation in YCoFe/sub 3/B
English
Grandjean, Fernande mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Sougrati, Moulay Tahar mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Mayot, H. [> >]
Isnard, O. [> >]
Long, Gary J [> >]
2009
Journal of Physics : Condensed Matter
21
18
186001 (7 pp.)-186001 (7 pp.)
Yes (verified by ORBi)
International
0953-8984
1361-648X
[en] Experimental/ boron alloys ; cobalt alloys ; ferromagnetic materials ; iron alloys ; magnetic anisotropy ; magnetic moments ; magnetic structure ; Mossbauer effect ; neutron diffraction ; spin dynamics ; thermomagnetic effects ; yttrium alloys/ high temperature spin reorientation ; /sup 57/Fe Mossbauer spectra ; magnetic moments ; basal orientation ; thermomagnetic curves ; magnetic anisotropy ; neutron diffraction patterns ; magnetic orientation ; hybridization ; hyperfine field ; temperature 4.2 K to 480 K ; temperature 2 K ; temperature 290 K to 770 K ; YCoFe/sub 3/B/ A7530D Spin waves in magnetically ordered materials A7540G Dynamic properties of magnetic materials A7680 Mo uml ssbauer effect ; other gamma-ray spectroscopy in condensed matter A7530C Magnetic moments and susceptibility in magnetically ordered materials A7215H Thermomagnetic effects (metals/alloys) A7530G Magnetic anisotropy A7525 Spin arrangements in magnetically ordered materials A7550B Ferromagnetism of Fe and its alloys/ temperature 4.2E+00 to 4.8E+02 K ; temperature 2.0E+00 K ; temperature 2.9E+02 to 7.7E+02 K/ YCoFe3B/ss Fe3/ss Co/ss Fe/ss B/ss Y/ss
[en] The iron-57 Mossbauer spectra of YCoFe /sub 3/ B have been measured between 4.2 and 480 K and reveal that YCoFe /sub 3/ B exhibits an axial orientation of the iron magnetic moments below 450 K and a basal orientation above 450 K. This spin reorientation, also observed in the thermomagnetic curves, results from the different signs of the contributions to the magnetic anisotropy of the 2c and 6i sites that are occupied by iron. The neutron diffraction patterns of YCoFe /sub 3/ B have been measured at 2 K and between 290 and 770 K and have been successfully analyzed with a model compatible with the magnetic orientation obtained from the Mossbauer spectra. The hybridization between the cobalt or iron 3d orbitals and the boron 2p orbitals leads to a larger magnetic moment and hyperfine field on the 2c site as compared to the 6i site.
ULG
http://hdl.handle.net/2268/33152
10.1088/0953-8984/21/18/186001

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