On the phosphors Na<sub>5</sub>M(WO<sub>4</sub>)<sub>4</sub> (M = Y, La-Nd, Sm-Lu, Bi) - crystal structures, thermal decomposition, and optical and magnetic properties.
Hämmer, Matthias; Janka, Oliver; Bönnighausen, Judith; Klenner, Steffen; Pöttgen, Rainer; Höppe, Henning A; Dalton transactions (Cambridge, England : 2003) 49 (2020) 8209–8225; doi:10.1039/d0dt00782j

data_7704470
_publ_section_title
;
 On the phosphors Na<sub>5</sub>M(WO<sub>4</sub>)<sub>4</sub> (M = Y,
 La-Nd, Sm-Lu, Bi) - crystal structures, thermal decomposition, and
 optical and magnetic properties.
;
_journal_issue                   24
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8209
_journal_page_last               8225
_journal_paper_doi               10.1039/d0dt00782j
_journal_volume                  49
_journal_year                    2020
_chemical_formula_moiety         'Na5 O16 Er1 W4'
_chemical_formula_structural     'Na5 Er (W O4)4'
_chemical_formula_sum            'Er Na5 O16 W4'
_chemical_formula_weight         1273.56
_chemical_name_mineral           Na5Er(WO4)4
_chemical_name_structure_type    Na5Lu(WO4)4
_chemical_name_systematic        'pentasodium erbium tetratungstate'
_space_group_crystal_system      tetragonal
_space_group_IT_number           88
_space_group_name_Hall           '-I 4ad'
_space_group_name_H-M_alt        'I 41/a :2'
_audit_update_record
;
2020-02-27 deposited with the CCDC.	2020-05-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.42573(13)
_cell_length_b                   11.42573(13)
_cell_length_c                   11.32408(14)
_cell_measurement_temperature    300(3)
_cell_measurement_theta_max      60
_cell_measurement_theta_min      2.5
_cell_volume                     1478.33(3)
_computing_structure_refinement  'TOPAS 5'
_computing_structure_solution    model
_diffrn_ambient_temperature      300(3)
_diffrn_detector                 'Ge solid-state'
_diffrn_detector_type            'GE METEOR 1D line detector'
_diffrn_measurement_device_type  'Seifert 3003 TT'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_exptl_crystal_density_diffrn    5.72
_exptl_crystal_description       powder
_pd_calc_method                  'Rietveld Refinement'
_pd_char_colour                  pink
_pd_char_particle_morphology     powder
_pd_meas_2theta_range_inc        0.01
_pd_meas_2theta_range_max        120
_pd_meas_2theta_range_min        5
_pd_meas_number_of_points        11501
_pd_meas_scan_method             step
_pd_proc_ls_background_function  Chebychev
_pd_proc_ls_profile_function     'fundamental parameters'
_pd_proc_ls_prof_R_factor        0.0261
_pd_proc_ls_prof_wR_factor       0.0394
_pd_proc_number_of_points        11501
_pd_spec_mount_mode              reflection
_pd_spec_shape                   flat_sheet
_pd_spec_size_axial              5
_pd_spec_size_equat              5
_pd_spec_size_thick              1
_refine_ls_number_parameters     46
_refine_ls_R_I_factor            0.016
_refine_ls_shift/su_max          0.001
_cod_data_source_file            d0dt00782j2.cif
_cod_data_source_block           Na5ErWO44
_cod_depositor_comments
'Adding full bibliography for 7704452--7704470.cif.'
_cod_original_cell_volume        1478.33(4)
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_original_formula_sum        'Na5 O16 Er1 W4'
_cod_database_code               7704470