The geometrical frustration occurring in the crystal lattice of pyrochlore oxides of the type A(2)B(2)O(7) (where A=Rare Earth, B=Mo, Sn, Ti, Zr) leads to exotic magnetic properties of these materials. The present study focuses on a new class of frustrated magnets, the lanthanide zirconates. Large, high quality single-crystals of the rare-earth zirconium oxides, Ln(2)Zr(2)O(7) (where Ln=La, Nd, Sm, and Gd), have been grown by the floating zone technique, using a high power xenon arc lamp furnace. The crystals have been characterized and tested for their quality using X-ray diffraction techniques. (C) 2015 Elsevier B.V. All rights reserved.