#------------------------------------------------------------------------------
#$Date: 2011-09-28 15:24:46 +0100 (Wed, 28 Sep 2011) $
#$Revision: 26848 $
#$URL: svn://www.crystallography.net/cod/cif/2/10/20/2102001.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2102001
loop_
_publ_author_name
'Christophe MULLER'
'Jean-Louis BAUDOUR'
'C\'edric BEDOYA'
'Fran\,coise BOUREE'
'Jean-Louis SOUBEYROUX'
'Marc ROUBIN'
_publ_section_title
;Octahedron deformations and cation displacements
in the ferroelectric PbHf~0.8~Ti~0.2~O~3~:
a neutron powder diffraction study from 10 K to 770 K
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              27
_journal_page_last               38
_journal_volume                  56
_journal_year                    2000
_chemical_formula_analytical     PbHf~0.8~Ti~0.2~O~3~
_chemical_formula_structural     PbHf~0.8~Ti~0.2~O~3~
_chemical_formula_sum            'Hf0.8 O3 Pb Ti0.2'
_chemical_formula_weight         407.52
_chemical_name_systematic        'lead hafnate titanate'
_space_group_IT_number           161
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   5.79430(10)
_cell_length_b                   5.79430(10)
_cell_length_c                   14.2742(5)
_cell_measurement_temperature    290
_cell_volume                     415.04(3)
_computing_cell_refinement       Fullprof
_computing_molecular_graphics    'CaRIne, version 3.0'
_computing_structure_refinement  Fullprof
_diffrn_measurement_device_type  'Diffractometer in Debye-Scherrer geometry'
_diffrn_radiation_type           neutron
_diffrn_radiation_wavelength     1.2251
_refine_ls_goodness_of_fit_all   2.28
_refine_ls_number_parameters     39
_refine_ls_number_reflns         158
_refine_ls_weighting_details     'w = 1/(\s^2^), \s^2^ = y'
_refine_ls_weighting_scheme      sigma
_[local]_cod_data_source_file    sh0134.cif
_[local]_cod_cif_authors_sg_H-M  'R 3 c'
_[local]_cod_chemical_formula_sum_orig 'Hf0.8 O3 Pb1 Ti0.2'
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Rhombohedral' changed to 'rhombohedral'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               2102001
loop_
_symmetry_equiv_pos_as_xyz
+x,+y,+z
-y,+x-y,+z
+y-x,-x,+z
-y,-x,1/2+z
+x,x-y,1/2+z
+y-x,+y,1/2+z
1/3+x,2/3+y,2/3+z
1/3-y,2/3+x-y,2/3+z
1/3+y-x,2/3-x,2/3+z
1/3-y,2/3-x,1/6+z
1/3+x,2/3+x-y,1/6+z
1/3+y-x,2/3+y,1/6+z
2/3+x,1/3+y,1/3+z
2/3-y,1/3+x-y,1/3+z
2/3+y-x,1/3-x,1/3+z
2/3-y,1/3-x,5/6+z
2/3+x,1/3+x-y,5/6+z
2/3+y-x,1/3+y,5/6+z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
Pb 0 0 .27930(10) .0243(4) Uequiv 1
Hf 0 0 .0114(2) .0023(2) Uiso .80
Ti 0 0 .0114(2) .0023(2) Uiso .20
O .1525(2) .3448(3) .0833 .0162(3) Uiso 3
loop_
_atom_type_symbol
Pb
Hf
Ti
O
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
Hf O 2.02
Hf O 2.11
Ti O 2.02
Ti O 2.11
O O 2.80
O O 3.00
O O 2.91
Pb O 2.54
Pb O 2.81
Pb O 3.04
Pb O 3.29