Synthesis, crystal structure and luminescence properties of CaY2−xEuxGe3O10 (x=0‒2)
Lipina, Olga A.; Surat, Ludmila L.; Melkozerova, Marina A.; Tyutyunnik, Alexander P.; Leonidov, Ivan I.; Zubkov, Vladimir G.; Journal of Solid State Chemistry 206 (2013) 117–121; doi:10.1016/j.jssc.2013.08.002

data_1562527
_publ_section_title
;
 Synthesis, crystal structure and luminescence properties of
 CaY2&#x2212;xEuxGe3O10 (x=0--2)
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              117
_journal_page_last               121
_journal_paper_doi               10.1016/j.jssc.2013.08.002
_journal_volume                  206
_journal_year                    2013
_chemical_formula_structural     'Ca Eu2 Ge3 O10'
_chemical_formula_sum            'Ca Eu2 Ge3 O10'
_chemical_formula_weight         721.76
_chemical_name_common            'Calcium Europium Germanium Oxide'
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90.0
_cell_angle_beta                 108.4623(11)
_cell_angle_gamma                90.0
_cell_formula_units_Z            4
_cell_length_a                   6.96679(16)
_cell_length_b                   6.91315(14)
_cell_length_c                   18.8713(4)
_cell_measurement_temperature    298(2)
_cell_volume                     862.11(3)
_computing_data_collection
'STOE Powder Software Package (STOE, Germany)'
_computing_data_reduction
'STOE Powder Software Package (STOE, Germany)'
_computing_structure_refinement  GSAS
_diffrn_ambient_temperature      298
_diffrn_detector                 'position sensitive detector'
_diffrn_detector_type            'linear mini-PSD (STOE)'
_diffrn_measurement_device_type  'transmission diffractometer Stadi-P (STOE)'
_diffrn_radiation_monochromator  'Primary, curved Ge 111'
_diffrn_radiation_polarisn_ratio 0.8
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a~1~'
_diffrn_radiation_wavelength     1.54056
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_target            Cu
_diffrn_source_type              'PHILIPS PW 2283/20'
_exptl_absorpt_correction_T_max  1.0
_exptl_absorpt_correction_T_min  0.0
_exptl_absorpt_process_details
;   GSAS Absorption/surface roughness correction: function number 4
 Flat plate transmission absorption correction
Terms =    -0.59366         0.0000    
Correction is refined.
;
_exptl_crystal_density_diffrn    5.562
_exptl_crystal_density_method    'not measured'
_pd_calc_method                  'Rietveld Refinement'
_pd_char_colour                  white
_pd_instr_dist_mono/spec         130
_pd_instr_dist_spec/detc         220
_pd_instr_dist_src/mono          260
_pd_meas_2theta_range_inc        0.02
_pd_meas_2theta_range_max        119.98
_pd_meas_2theta_range_min        5.0
_pd_meas_number_of_points        5750
_pd_meas_scan_method             step
_pd_prep_temperature             1373
_pd_proc_2theta_range_inc        0.02
_pd_proc_2theta_range_max        119.95256
_pd_proc_2theta_range_min        4.97256
_pd_proc_info_datetime           2013-04-02T13:52:17
_pd_proc_ls_background_function
;   GSAS Background function number 1 with 36 terms.
 Shifted Chebyshev function of 1st kind
      1:    14477.2     2:   -3051.27     3:    3665.17     4:   -1813.89    
      5:    408.824     6:    24.8294     7:   -194.066     8:    158.877    
      9:   -86.3711    10:   -24.7716    11:    79.1603    12:   -47.7627    
     13:    88.7107    14:   -98.2249    15:   -11.5589    16:    31.8561    
     17:   -10.7379    18:    45.2549    19:   -55.3708    20:    35.8707    
     21:   -26.0902    22:    40.8130    23:   -18.8300    24:    25.2455    
     25:   -17.9668    26:   -16.4648    27:    40.9252    28:   -17.9909    
     29:   -5.41165    30:    14.8720    31:   -1.73172    32:    10.1083    
     33:   -31.0335    34:    67.8499    35:   -58.3534    36:    34.6767    
;
_pd_proc_ls_peak_cutoff          0.00100
_pd_proc_ls_profile_function
;
 CW Profile function number 2 with  18 terms
 Profile coefficients for Simpson's rule integration of pseudovoigt function
 C.J. Howard (1982). J. Appl. Cryst.,15,615-620.
 P. Thompson, D.E. Cox & J.B. Hastings (1987). J. Appl. Cryst.,20,79-83.
 #1(GU)   =  135.992 #2(GV)   =  -22.914 #3(GW)   =   17.528
 #4(LX)   =    3.235 #5(LY)   =    5.347 #6(trns) =    0.000
 #7(asym) =   4.1086 #8(shft) =   0.0000 #9(GP)   =    0.000
 #10(stec)=     0.00 #11(ptec)=     0.00 #12(sfec)=     0.00
 #13(L11) =    0.000 #14(L22) =    0.000 #15(L33) =    0.000
 #16(L12) =    0.000 #17(L13) =    0.000 #18(L23) =    0.000
 Peak tails are ignored  where the intensity is below 0.0010 times the peak
   Aniso. broadening axis   0.0   0.0   1.0
;
_pd_proc_ls_prof_R_factor        0.0083
_pd_proc_ls_prof_wR_expected     0.0085
_pd_proc_ls_prof_wR_factor       0.0108
_pd_proc_number_of_points        5750
_pd_spec_mounting                'powder on Mylar film'
_pd_spec_mount_mode              transmission
_pd_spec_shape                   flat_sheet
_pd_spec_size_axial              7
_pd_spec_size_equat              0.1
_refine_ls_goodness_of_fit_all   1.29
_refine_ls_matrix_type           full
_refine_ls_number_parameters     101
_refine_ls_number_restraints     0
_refine_ls_R_Fsqd_factor         0.04472
_refine_ls_shift/su_max          0.02
_refine_ls_shift/su_mean         0.00
_reflns_d_resolution_high        0.890
_reflns_d_resolution_low         8.950
_reflns_limit_h_max              8
_reflns_limit_h_min              0
_reflns_limit_k_max              7
_reflns_limit_k_min              0
_reflns_limit_l_max              20
_reflns_limit_l_min              -21
_reflns_number_total             1273
_cod_data_source_file            CAEU2GE3O10.cif
_cod_data_source_block           CAEU2GE3O10
_cod_database_code               1562527
_gsas_exptl_extinct_corr_t_min   1.00000
_gsas_exptl_extinct_corr_t_max   1.00000