Tuning Magnetic and Structural Transitions through Valence Electron Concentration in the Giant Magnetocaloric Gd5‒xEuxGe4Phases
Yao, Jinlei; Wang, Peng; Mozharivskyj, Yurij; Chemistry of Materials 24 (2012) 552–; doi:10.1021/cm203148e

data_4001971
_publ_section_title
;
 Tuning Magnetic and Structural Transitions through Valence Electron
 Concentration in the Giant Magnetocaloric Gd5--xEuxGe4Phases
;
_journal_issue                   3
_journal_name_full               'Chemistry of Materials'
_journal_page_first              552
_journal_paper_doi               10.1021/cm203148e
_journal_volume                  24
_journal_year                    2012
_chemical_formula_sum            'Eu0.25 Gd4.75 Ge4'
_chemical_formula_weight         1075.29
_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'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.6781(6)
_cell_length_b                   14.8416(14)
_cell_length_c                   7.7797(7)
_cell_measurement_reflns_used    1230
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.14
_cell_measurement_theta_min      2.74
_cell_volume                     886.54(13)
_computing_cell_refinement       X-Area
_computing_data_collection       X-Area
_computing_data_reduction        X-Red32
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'STOE IPDSII'
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0813
_diffrn_reflns_av_sigmaI/netI    0.0621
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            8524
_diffrn_reflns_theta_full        29.14
_diffrn_reflns_theta_max         29.14
_diffrn_reflns_theta_min         2.74
_exptl_absorpt_coefficient_mu    49.990
_exptl_absorpt_correction_T_max  0.0997
_exptl_absorpt_correction_T_min  0.0441
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   X-Red
_exptl_crystal_colour            metallic
_exptl_crystal_density_diffrn    8.056
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1791
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.131
_exptl_crystal_size_min          0.117
_refine_diff_density_max         1.954
_refine_diff_density_min         -2.406
_refine_diff_density_rms         0.467
_refine_ls_extinction_coef       0.00108(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.960
_refine_ls_matrix_type           full
_refine_ls_number_parameters     47
_refine_ls_number_reflns         1230
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.0649
_refine_ls_R_factor_gt           0.0386
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0182P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0515
_refine_ls_wR_factor_ref         0.0555
_reflns_number_gt                952
_reflns_number_total             1230
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            Gd4.75Eu0.25Ge4.cif
_cod_data_source_block           pnma
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      Pnma
_cod_database_code               4001971