The spin ice materials, including Ho 2 Ti 2 O 7 and Dy 2 Ti 2 O 7, are rare-earth pyrochlore
magnets which, at low temperatures, enter a constrained paramagnetic state with an …

A frustrated system is one whose symmetry precludes the possibility that every pairwise
interaction (“bond”) in the system can be satisfied at the same time. Such systems are …

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 3+ B 2 4+ O 7, where A is a rare-earth ion and …

The current state of efforts to understand the phenomenon of geometric magnetic frustration
is described in the context of several key materials. All are transition metal oxides which …

Abstract The pyrochlore material Ho 2 Ti 2 O 7 has been suggested to show “spin ice”
behavior. We present neutron scattering and specific heat results that establish …

We describe magnetization measurements on the heavy rare earth titanate pyrochlores R 2
Ti 2 O 7, where R= Gd, Dy, Ho, Er, Yb, in the temperature range 1.8-300 K, and the field …

Er 2 Ti 2 O 7 has been suggested to be a realization of the frustrated< 111> XY pyrochlore
lattice antiferromagnet, for which theory predicts fluctuation-induced symmetry breaking in a …

Rare earth-based materials have played a central role in recent efforts to understand the
very unconventional behavior of geometrically frustrated magnetic materials. In particular …

Using neutron diffraction, 170 Yb Mössbauer and muon spin relaxation spectroscopies, we
have examined the pyrochlore Yb 2 Ti 2 O 7, where the Yb 3+ S′= 1/2 ground state has …

We have carried out extensive neutron-scattering studies on the pyrochlore antiferromagnet
Tb 2 Ti 2 O 7 in both polycrystalline and single-crystal form. This insulating material belongs …