Magnetic structure determination of TbCo2Ni3 using polarized and nonpolarized neutron powder diffraction

被引：12
|
作者：
Rivin, Oleg [1 ,2 ]
Caspi, El'ad N. [1 ]
Ettedgui, Hanania [1 ]
Shaked, Hagai [2 ]
Gukasov, Arsen [3 ]
机构：
[1] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel
[2] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel
[3] CE Saclay, CEA CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France
来源：
PHYSICAL REVIEW B | 2013年 / 88卷 / 05期
关键词：
ANISOTROPY; YCO5; INTERMETALLICS; METAL; AL;
D O I：
10.1103/PhysRevB.88.054430
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structural (space group P6/mmtn) and magnetic parameters of TbCo2Ni3 are investigated using neutron powder diffraction and polarized neutron powder diffraction at several temperatures below the magnetic transition temperature. It is found that this compound orders ferrimagnetically at 315 K, with ferromagnetic Tb and Co/Ni sublattices. Below 100 K, the magnetic axis is perpendicular to the hexagonal axis. Above 100 K, the magnetic axis reorients slightly towards the hexagonal axis. The magnitudes and orientation of the ordered magnetic moments exhibit complex temperature dependences. The observed magnitude of the ordered Tb magnetic moment at T = 10 K, is found to be 8.1(2) mu(B), smaller than the free Tb3+ ion. The significance of this property, and its relation to the mechanisms driving the magnetic order in the parent TbCo5 compound, are discussed.
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页数：11
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