Single crystals of La1.7Ca0.3NiO4 were grown by floating zone method.
The crystal structure was determined by single crystal X-ray diffracti
on. La1.7Ca0.3NiO4 crystallizes tetragonal in space group I 4/mmm (No.
139) with a = 3.833(1) and c = 12.604(4) Angstrom. The stability of t
he structure is proved down to 125 K. (C) 1997 Elsevier Science Ltd.