With the improvement in both materials and processing techniques, very
large-grained YBa2-. Cu3O7 samples with overall dimension of 4 x 12 x
12 mm(3) were produced. Each sample was capable of levitating over a
kilogram in weight. A high temperature superconducting magnetic-suspen
sion (levitation) train prototype was constructed using the YBa2Cu3O7
samples, to validate the concept of using an HTS Meissner effect magne
tic suspension system. Measurements on important magnetic suspension p
arameters, such as relative suspension stability and suspension force,
as well as magnetic field intensity and distribution are reported and
discussed. (C) 1998 Published by Elsevier Science Ltd. All rights res
erved.