Determination of the magnetic structure of Ho2BaNiO5.

Exercise: Determine the propagation vector
          symmetry analysis with BasIreps
          Solve the magnetic structure
          Refine the magnetic structure

Additional info:
Reference: Magnetic Structure of Ho2BaNiO5
E. Garca-Matres, J. Rodrguez-Carvajal, J.L. Martnez,
A. Salinas-Snchez and R. Sez-Puche.
Solid State Communications 85(7), 553 (1993)

   Crystal structure:
   SPGR    I m m m
   CELL    a= 3.754168   b=5.729970  c=11.269413

BA   BA      0.50000  0.50000  0.00000  0.00000  0.12500
HO   HO      0.50000  0.00000  0.20255  0.00000  0.25000
NI   NI      0.00000  0.00000  0.00000  0.00000  0.12500
O1   O       0.00000  0.24362  0.14954  0.00000  0.50000
O2   O       0.50000  0.00000  0.00000  0.00000  0.12500

Lambda: 2.524
Approx. U,V,W parameters of D1B: 1.614013  -1.077673   0.363416
INSTR: 3

The crystal structure cannot be refined alone with this pattern taken at 1.5K.
The magnetic scattering is dominating the whole pattern.
Data file: hobk.dat
The PCR file containing the crystal structure is provided.

