Weak magnetic transitions in pyrochlore Bi2Ir2O7

Magnetic pyrochlore oxides

Within the past 20 years or so, there has occurred an explosion of interest in the magnetic behavior of pyrochlore oxides of the type A 2 B 4+ 2 O7 where A is a rare-earth ion and B is usually a transition metal. Both the A and B sites form a network of corner-sharing tetrahedra which is the quintessential framework for a geometrically frustrated magnet. In these systems the natural tendency to...

Infrared study of the electronic structure of the metallic pyrochlore iridate Bi2Ir2O7

Y. S. Lee,1,2 S. J. Moon,1,3 Scott C. Riggs,4,5 M. C. Shapiro,4,5 I. R. Fisher,4,5 Bradford W. Fulfer,6 Julia Y. Chan,6 A. F. Kemper,7 and D. N. Basov1 1Department of Physics, University of California at San Diego, La Jolla, California 92093, USA 2Department of Physics, Soongsil University, Seoul 156-743, Republic of Korea 3Department of Physics, Hanyang University, Seoul 133-791, Republic of K...

Anisotropy-Tuned Magnetic Order in Pyrochlore Iridates.

The magnetic behavior of polycrystalline samples of Er(2)Ir(2)O(7) and Tb(2)Ir(2)O(7) pyrochlores is studied by magnetization measurements and neutron diffraction. Both compounds undergo a magnetic transition at 140 and 130 K, respectively, associated with an ordering of the Ir sublattice, signaled by thermomagnetic hysteresis. In Tb(2)Ir(2)O(7), we show that the Ir molecular field leads the Tb...

Dimensional evolution of spin correlations in the magnetic pyrochlore Yb2Ti2O7

magnetic resonance imaging in dentistry

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