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#$Date: 2016-02-11 00:55:37 +0200 (Thu, 11 Feb 2016) $
#$Revision: 176342 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/30/03/2300355.cif $
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#
# 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_2300355
loop_
_publ_author_name
'Jensen, Kirsten'
'Christensen, Mogens'
'Tyrsted, Christoffer'
'Brummerstedt Iversen, Bo'
_publ_section_title
;
Real-time synchrotron powder X-ray diffraction study of the antisite
defect formation during sub- and supercritical synthesis of LiFePO~4~
and LiFe~1{-~x}Mn~x~PO~4~ nanoparticles
;
_journal_coeditor_code KO5132
_journal_issue 2
_journal_name_full 'Journal of Applied Crystallography'
_journal_page_first 287
_journal_page_last 294
_journal_paper_doi 10.1107/S0021889811006522
_journal_volume 44
_journal_year 2011
_chemical_formula_sum 'Fe0.25 Li Mn0.75 O4 P'
_chemical_name_systematic ' ?'
_space_group_IT_number 62
_symmetry_cell_setting orthorhombic
_symmetry_space_group_name_Hall '-P 2ac 2n'
_symmetry_space_group_name_H-M 'P n m a'
_cell_angle_alpha 90.00000
_cell_angle_beta 90.00000
_cell_angle_gamma 90.00000
_cell_formula_units_Z 4
_cell_length_a 10.4303(3)
_cell_length_b 6.08084(19)
_cell_length_c 4.74531(18)
_cell_measurement_pressure 2.5E4
_cell_measurement_temperature 618
_cell_volume 300.971(17)
_computing_structure_refinement FULLPROF
_diffrn_ambient_pressure 2.5E4
_diffrn_ambient_temperature 618
_diffrn_radiation_wavelength 0.94449
_pd_block_diffractogram_id LiFe025Mn075PO4345
_pd_instr_location ' ?'
_pd_meas_2theta_range_inc 0.037384
_pd_meas_2theta_range_max 43.97871
_pd_meas_2theta_range_min 3.45480
_pd_meas_number_of_points 1086
_pd_proc_2theta_range_inc 0.037384
_pd_proc_2theta_range_max 43.9675
_pd_proc_2theta_range_min 3.4436
_pd_proc_ls_pref_orient_corr ' ?'
_pd_proc_ls_prof_R_factor 0.3631
_pd_proc_ls_prof_wR_expected 0.3526
_pd_proc_ls_prof_wR_factor 0.4891
_pd_proc_wavelength 0.944490
_pd_spec_mounting ' ?'
_refine_ls_number_parameters 46
_refine_ls_number_reflns 167
_refine_ls_number_restraints 0
_cod_data_source_file ko5132.cif
_cod_data_source_block LiFe025Mn075PO4345
_cod_depositor_comments
;
Luca Lutterotti, 10/5/2013
Problem with occupancy exceeding 1.
Occupancy corrected using following rules:
- Fe/Mn and Li relatives occupancies as refined by authors
- Fe/Mn ratio fixed to nominal composition: 0.75/0.25, 0.5/0.5, 0.25/0.75
- O and P occupancies = 1
Everything turn out correct this way.
#----------------------------------------------------------------------
The original ko5132.cif from the IUCr web-site was updated according
to the message received from the authors:
From: Bo Brummerstedt Iversen
To: Saulius Gra\
Subject: Re: Supplementary data for your paper ko5132.cif
Date: Thu, 12 May 2011 10:27:02 +0200 (11:27 EEST)
Dear Saulius,
Thanks for your mail
1) /.../ The compositions are LiFePO4, LiFe0.75Mn0.25PO4,
LiFe0.50Mn0.50PO4, and LiFe0.25Mn0.50PO4
The occupancy of the Fe in the second block should therefore be
changed to 0.7465(17), while that of manganese should be 0.25096. We
are sorry about this confusion.
2) Yes, the bruttoformula should be the data header, and the Z value 4
3) Yes, the data were measured at 345 degrees celcius.
4) Yes, the pressure during the measurement was 250 bar.
/.../
Best regards,
Bo
Saulius Gra\