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2005 J. Phys.: Condens. Matter 17 6969-6979 doi: 10.1088/0953-8984/17/43/014 
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Abstract. We have grown single crystals of YbFe6Ge6 and LuFe6Ge6 and characterized their anisotropic behaviour through low-field magnetic susceptibility, field-dependent magnetization, resistivity and heat capacity measurements. The Yb3+ valency is confirmed by LIII XANES measurements. YbFe6Ge6 crystals exhibit a field-dependent, sudden reorientation of the Fe spins at about 63 K, a unique effect in the RFe6Ge6 family (R = rare earths), where the Fe ions order anti-ferromagnetically with Neél temperatures above 450 K and the R ions' magnetism appears to behave independently. The possible origins of this unusual behaviour of the ordered Fe moments in this compound are discussed.
Print publication: Issue 43 (2 November 2005) |
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