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Compounds with the YbFe2O4Structure Type: Frustrated Magnetism and Spin-Glass Behavior

โœ Scribed by R.J. Cava; A.P. Ramirez; Q. Huang; J.J. Krajewski

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
334 KB
Volume
140
Category
Article
ISSN
0022-4596

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โœฆ Synopsis

The YbFe 2 O 4 structure type consists of triangular layers of lanthanide oxygen octahedra stacked with triangular double layers of transition metal oxygen triangular bipyramids. The crystallographic structures determined by neutron diffraction powder profile analysis at 300 and 11 K for new members of this structural family are reported. The compounds are found to be magnetically frustrated, by both lattice geometry and disorder. The magnetic properties of YbCuGaO 4 , LuCuGaO 4 , LuZn FeO 4 , LuCoGaO 4 , and LuCuFeO 4 reveal the effects of total spin, spin mixing, and interaction between spins on different sublattices on the magnetic frustration. The magnetism is increasingly frustrated as the spin on the magnetic ions is decreased.

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