COL  ICSD Collection Code 68781
 DATE Recorded Jan 20, 1992
 NAME Zirconium oxide
 FORM Zr O2
      = O2 Zr
 TITL Neutron diffraction studies of phase transformations between 
      tetragonal and orthorhombic zirconia in magnesia-
      partiallystabilized zirconia
 REF  Journal of the American Ceramic Society
      JACTA 73 (1990) 2828-2833  Issue 10
 AUT  Howard C J, Kisi˙E˙H, Roberts˙R˙B, Hill˙R˙J
 CELL a=3.592(0) b=3.592(0) c=5.184(1) ŕ=90.0 á=90.0 ç=90.0
      V=66.9 Z=2
 SGR  P 42/n m c Z  (137) - tetragonal
 CLAS 4/mmm (Hermann-Mauguin) - D4h (Schoenflies)
 PRS  tP6
 ANX  AX2
 PARM Atom__No OxStat  Wyck -----X----- -----Y----- -----Z-----  -SOF-
      Zr     1  4.000    2a  3/4         1/4         1/4
      O      1 -2.000    4d  1/4         1/4         0.4546(6)
 WYCK d a
 ITF  Zr  1   B=0.41(4)
 ITF  O   1   B=0.36(4)
 REM  NDP (neutron diffraction from a powder)
 REM  RVP
 RVAL 0.046