Magnetism and Negative Magnetoresistance of Two Magnetically Ordering, Rare-Earth-Containing Zintl phases with a New Structure Type: EuGa2Pn2(Pn = P, As)
Goforth, Andrea M.; Hope, Håkon; Condron, Cathie L.; Kauzlarich, Susan M.; Jensen, Newell; Klavins, Peter; MaQuilon, Samuel; Fisk, Zachary; Chemistry of Materials 21 (2009) 4480–; doi:10.1021/cm901219u

data_4001041
_publ_section_title
;
 Magnetism and Negative Magnetoresistance of Two Magnetically Ordering,
 Rare-Earth-Containing Zintl phases with a New Structure Type: EuGa2Pn2(Pn
 = P, As)
;
_journal_issue                   19
_journal_name_full               'Chemistry of Materials'
_journal_page_first              4480
_journal_paper_doi               10.1021/cm901219u
_journal_volume                  21
_journal_year                    2009
_chemical_formula_sum            'As2 Eu Ga2'
_chemical_formula_weight         441.24
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           10
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2y'
_symmetry_space_group_name_H-M   'P 1 2/m 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.3040(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4953(7)
_cell_length_b                   4.0294(3)
_cell_length_c                   12.4237(9)
_cell_measurement_temperature    100(1)
_cell_volume                     473.30(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(1)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART APEXII'
_diffrn_measurement_method       \w
_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  0.0272
_diffrn_reflns_av_sigmaI/netI    0.0200
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6040
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.59
_exptl_absorpt_coefficient_mu    38.065
_exptl_absorpt_correction_T_max  0.15
_exptl_absorpt_correction_T_min  0.05
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (multi-scan)'
_exptl_crystal_colour            'silver metallic'
_exptl_crystal_density_diffrn    6.192
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelpiped
_exptl_crystal_F_000             764
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.740
_refine_diff_density_min         -0.898
_refine_diff_density_rms         0.265
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.261
_refine_ls_matrix_type           full
_refine_ls_number_parameters     66
_refine_ls_number_reflns         1240
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.261
_refine_ls_R_factor_all          0.0161
_refine_ls_R_factor_gt           0.0155
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0065P)^2^+1.2900P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0315
_refine_ls_wR_factor_ref         0.0317
_reflns_number_gt                1219
_reflns_number_total             1240
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm901219u_si_001.cif
_cod_data_source_block           hh460as
_cod_database_code               4001041