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yuxf木蟲 (正式寫手)
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[求助]
求GdMn2O5的原子坐標(biāo) 已有2人參與
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只找到了晶格常數(shù)和空間群,求大神幫忙找下原子坐標(biāo) 先謝謝啦~ |
至尊木蟲 (職業(yè)作家)
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從附件的文獻(xiàn)里,相信你能得到答案! GdMn2O5 Crystal Structure General Information Phase Label(s): GdMn2O5 Structure Class(s): – Classification by Property(s): intermediate valence Mineral Name(s): – Pearson Symbol: oP32 Space Group: 55 Phase Prototype: DyMn2O5 1. Crystal Structure of Paramagnetic DyMn2O5 at 298°K S. C. Abrahams1 and J. L. Bernstein1 J. Chem. Phys. 46, 3776 (1967) 2. C Vecchini et al 2014 J. Phys.: Conf. Ser. 519 012004 doi:10.1088/1742-6596/519/1/012004 Magnetic phase diagram and ordered ground state of GdMn2O5 multiferroic studied by x-ray magnetic scattering C Vecchini1,2, A Bombardi1, L C Chapon3,4, N Lee5, P G Radaelli6 and S-W Cheong5 3. C Wilkinson et al 1981 J. Phys. C: Solid State Phys. 14 1671 doi:10.1088/0022-3719/14/11/027 The antiferromagnetic structure of DyMn2O5 at 4.2K C Wilkinson, F Sinclair, P Gardner, J B Forsyth and B M R Wanklyn |
至尊木蟲 (職業(yè)作家)
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GdMn2O5 crystallizes in the centrosymmetric Pbam space group. Manganese ions are found in two oxidation states, Mn4+ (Wyckoff position 4f, 0,0.5,0.2551) and Mn3+ (Wyckoff position 4h,0.4118,0.3518,0.5), respectively in octahedral and square-pyramidal environments. The octahedra share edges to form chains along the c-axis. In the ab-plane, Mn polyhedra share edges and corners to form layers that can be viewed as an alternate stacking along b of ziz-zag ...Mn4+-Mn3+-Mn3+-Mn4+... chains running along the a-axis. The Gd3+ cations form GdO8 polyhedra which are located on position 4g (0.1395,0.1716,0) and separate the adjacent ”Mn” ab-layers. |
至尊木蟲 (職業(yè)作家)
至尊木蟲 (職業(yè)作家)
至尊木蟲 (職業(yè)作家)
鐵桿木蟲 (正式寫手)
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GdMn2O5的cif文件如下: #### CIF created by Crystallographica 2 #### data_GadoliniumManganoIIImanganateIV _audit_creation_method 'Crystallographica 2' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 7.3531 _cell_length_b 8.5371 _cell_length_c 5.6807 _cell_volume 356.601 _cgraph_comments 'Structure and ferroelectricity of R Mn2 O5 ' _cgraph_title 'Gadolinium Mangano(III)manganate(IV)' _chemical_formula_sum 'Gd (Mn2 O5)' _symmetry_space_group_name_H-M 'P b a m' _symmetry_space_group_name_Hall '-P 2 2ab' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' '-x, -y, z' 'x, y, -z' 'x+1/2, -y+1/2, -z' '-x+1/2, y+1/2, z' '-x+1/2, y+1/2, -z' 'x+1/2, -y+1/2, z' loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_thermal_displace_type _atom_site_occupancy Gd1 Gd3+ 0.1395 0.1716 0 0 Uiso 1 Mn1 Mn4+ 0 0.5 0.2551 0 Uiso 1 Mn2 Mn3+ 0.4118 0.3518 0.5 0 Uiso 1 O1 O2- 0 0 0.2697 0 Uiso 1 O2 O2- 0.1526 0.4486 0 0 Uiso 1 O3 O2- 0.1454 0.4356 0.5 0 Uiso 1 O4 O2- 0.3994 0.2076 0.245 0 Uiso 1 _eof #### End of Crystallographic Information File #### 將以上內(nèi)容復(fù)制粘貼到文本文件中,另存為*.cif文件,即可導(dǎo)入MS中。 |
鐵桿木蟲 (正式寫手)
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symmetry Group: PBAM IT Number: 55 晶格常數(shù):a=7.3531,b=8.5371,c=5.6807 原子坐標(biāo): Gd原子只有一種位置:x=0.1395,y=0.1716,z=0 O原子有四種位置: O1:x=0,y=0,z=0.2697 O2:x=0.6526,y=0.0514,z=0 O3:x=0.6454,y=0.0644,z=0.5 O4:x=0.8994,y=0.2924,z=0.2450 Mn原子有兩種位置: Mn1:x=0.5,y=0,z=0.2551 Mn:x=0.9118,y=0.1482,z=0.5 |
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