Sufficiently large single crystals of Y2Cu2O5 for use in neutron diffractio
n experiments were successfully grown by the traveling-solvent floating zon
e method under an oxygen partial pressure of 40-100%. The optimum compositi
on for growth from a high-temperature solution was determined in situ using
high-temperature optical microscopy. The growth direction was parallel to
the crystallographic b-axis. This crystal exhibited well-defined metamagnet
ic transitions. (C) 1999 Elsevier Science B.V. All rights reserved.