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|Title: ||The effect of non-magnetic dilution of the Tb sublattice in TbCo3B2|
|Authors: ||Wolfson, EJ|
|Issue Date: ||20-Jan-2010|
|Publisher: ||IOP PUBLISHING LTD|
|Citation: ||Wolfson, E. J., Caspi, E. N., Ettedgui, H., Shaked, H., & Avdeev, M. (2010). The effect of non-magnetic dilution of the Tb sublattice in TbCo3B2. Journal of Physics Condensed Matter, 22(2), Article Number 026001.|
|Abstract: ||Solid solutions of Tb 1− x Y x Co 3 B 2 ( x = 0.05, 0.1, 0.25, 0.4 and 0.5) were studied by neutron powder diffraction, x-ray diffraction, AC susceptibility and SQUID magnetization measurements. Their magnetic and crystallographic properties were deduced and examined together with those previously published for the end compounds ( x = 0,1). These solid solutions have hexagonal symmetry and are paramagnetic at RT, and undergo a magnetic ordering transition of the Co sublattice, with the magnetic moments along the hexagonal axis, at T Co ~150(15) K, independent of Y concentration. A second magnetic ordering transition of the Tb sublattice T Tb ≤30 K accompanied by the rotation of the magnetic moments towards the basal plane, was observed for solid solutions with Y concentration x ≤0.25. This transition was also found to be accompanied by a crystallographic symmetry decrease. Unexpectedly, neutron powder diffraction showed that the magnitude of the ordered magnetic moment of the Tb ion decreases with Tb concentration. © 2010 IOP Publishing LTD.|
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