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Low-carrier density and fragile magnetism in a Kondo lattice system
Binod K. Rai, Iain W. H. Oswald, Wenjing Ban +17
Kondo-based semimetals and semiconductors are of extensive current interest as a viable platform for strongly correlated states. It is thus important to understand the routes towar…
Anomalous metamagnetism in the low carrier density Kondo lattice YbRh3Si7
Binod K. Rai, S. Chikara, Xiaxin Ding +25
We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical transport, magnetization, and specific heat measurem…
Frustrated Ferroelectricity in Niobate Pyrochlores
T. M. McQueen, B. Muegge, Q. Huang +3
The crystal structures of the A2B2O7-x Niobium-based pyrochlores Y2(Nb0.86Y0.14)2O6.91, CaYNb2O7, and Y2NbTiO7 are reported, determined by powder neutron diffraction. These compoun…
Magnetism and structure of LixCoO2 and comparison to NaxCoO2
J. T. Hertz, Q. Huang, T. McQueen +4
The magnetic properties and structure of LixCoO2 for x between 0.5 and 1.0 are reported. Co4+ is found to be high-spin in LixCoO2 for x between 0.94 and 1.0 and low-spin for x betw…
Neel to Spin-Glass-like Phase Transition versus Dilution in Geometrically Frustrated ZnCr_{2-2x}Ga_{2x}O_4
S. -H. Lee, W. Ratcliff, Q. Huang +2
ZnCr2O4 undergoes a first order spin-Peierls-like phase transition at 12.5 K from a cubic spin liquid phase to a tetragonal Neel state. Using powder diffraction and single crystal…
Incommensurate magnetic structure in the orthorhombic perovskite ErMnO_3
F. Ye, B. Lorenz, Q. Huang +6
By combining dielectric, specific heat, and magnetization measurements and high-resolution neutron powder diffraction, we have investigated the thermodynamic and magnetic/structura…