Structural phase transitions in EuNbO3 perovskite
Kususe, Yoshiro; Yoshida, Suguru; Fujita, Koji; Akamatsu, Hirofumi; Fukuzumi, Masafumi; Murai, Shunsuke; Tanaka, Katsuhisa; Journal of Solid State Chemistry 239 (2016) 192–199; doi:10.1016/j.jssc.2016.04.032

data_1561462
_publ_section_title
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 Structural phase transitions in EuNbO3 perovskite
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_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              192
_journal_page_last               199
_journal_paper_doi               10.1016/j.jssc.2016.04.032
_journal_volume                  239
_journal_year                    2016
_chemical_formula_sum            'Eu Nb O3'
_chemical_formula_weight         292.869
_space_group_IT_number           140
_space_group_name_Hall           '-I 4 2c'
_space_group_name_H-M_alt        'I 4/m c m'
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      140
_symmetry_space_group_name_Hall  '-I 4 2c'
_symmetry_space_group_name_H-M   'I 4/m c m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.68690(5)
_cell_length_b                   5.68690(5)
_cell_length_c                   8.05140(9)
_cell_measurement_reflns_used    147
_cell_measurement_temperature    400
_cell_measurement_theta_max      74.374
_cell_measurement_theta_min      11.393
_cell_volume                     260.389(4)
_computing_cell_refinement       'RIETAN-FP (Izumi and Momma, 2007)'
_computing_molecular_graphics    'VESTA (Momma and Izumi, 2008)'
_computing_structure_refinement  'RIETAN-FP (Izumi and Momma, 2007)'
_diffrn_ambient_temperature      400
_diffrn_radiation_wavelength     0.799150
_diffrn_source                   synchrotron
_exptl_crystal_density_diffrn    7.4707
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             512.00
_pd_calc_method                  'Rietveld Refinement'
_pd_char_colour                  dark-blue
_pd_instr_location               ' ?'
_pd_meas_2theta_range_inc        0.0100
_pd_meas_2theta_range_max        77.4300
_pd_meas_2theta_range_min        0.0000
_pd_meas_number_of_points        7744
_pd_meas_scan_method             step
_pd_proc_2theta_range_inc        0.0100
_pd_proc_2theta_range_max        75.0000
_pd_proc_2theta_range_min        10.0000
_pd_proc_ls_background_function  'Legendre polynomials'
_pd_proc_ls_pref_orient_corr     ' ?'
_pd_proc_ls_profile_function     'split pseudo-Voigt function'
_pd_proc_ls_prof_R_factor        0.04970
_pd_proc_ls_prof_wR_expected     0.06995
_pd_proc_ls_prof_wR_factor       0.07655
_pd_spec_mounting                ' ?'
_pd_spec_mount_mode              reflection
_pd_spec_shape                   flat_sheet
_refine_diff_density_max         0.0
_refine_diff_density_min         0.0
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.0943
_refine_ls_matrix_type           full
_refine_ls_number_constraints    1
_refine_ls_number_parameters     28
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.02541
_refine_ls_R_Fsqd_factor         0.07540
_refine_ls_R_I_factor            0.02047
_refine_ls_shift/su_max          0.0
_refine_ls_weighting_details     1/<i>y</i>~i~
_refine_ls_weighting_scheme      sigma
_cod_data_source_file            JSSC-2016-239-192.cif
_cod_data_source_block           single_phase_400K
_cod_database_code               1561462