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Ba7Ga4As9

高熵材料 HEA

MP-ID: mp-1195273 · 空间群: Pmmn (#59)

基础信息

化学式
Ba7Ga4As9
MP-ID
mp-1195273
元素数
3
位点数
40
密度
5.2586
g/cm³
体积
1,209.08
ų
晶胞参数 a
6.8654
Å
晶胞参数 b
10.2454
Å
晶胞参数 c
17.1893
Å
α 角
90.00
°
β 角
90.00
°
γ 角
90.00
°
空间群
Pmmn
点群
mmm
晶体系统
Orthorhombic
Bravais 格子
oP
稳定性
Yes
堆积分数
-

能量属性

形成能/原子
-0.88922
eV/atom
能量/原子
-4.26803
eV/atom
凸包距离
0.0000
eV/atom
未修正能量
-19.2398
eV/atom
体积/原子
30.23
ų
c/a 比
2.5038

电子属性

金属性
金属
带隙
0
eV
直接带隙
No
CBM
N/A
eV

磁性属性

磁性
No
总磁矩
0.0000
μB
磁有序
NM
磁性位点数
0
磁化强度/体积
0.000000
μB/ų

弹性属性

弹性数据暂不开放

特征分析

元素组成(原子分数)
组成信息
主元 / 基质元素
As · 0.450
元素家族
Metalloid-Nonmetal
溶质分数
0.550
间隙分数
0.000
综合指标雷达(归一化)
元素类别占比
混合熵 ΔS/R
1.0487
高熵判据(>1.0 视为高熵)
混合熵 ΔS
8.7185
J/mol·K
Ω 参数
0.0000
Ω > 1.1 利于固溶体形成
原子尺寸错配 δr
29.465%
δr < 6.6% 利于单相固溶
电负性差 Δχ
0.5776
越小混合越稳定
VEC
2.650
价电子浓度,影响相稳定性
混合焓 ΔH_mix
0.000
kJ/mol 且负值为放热混合
熵归一化
0.9545
固溶体倾向
0
相趋势
IM

关联任务

关联的计算任务 ID(1 个)

引用参考

Materials Project 官方页面
https://materialsproject.org/materials/mp-1195273
参考引用

The crystal structure and related material properties of Ba7Ga4As9 were obtained from the Materials Project database (MP-ID: mp-1195273, database version v2026.04.13).

文献引用

Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0

晶体结构 3D 渲染

加载 3D 结构...

样式: Ball & Stick
原始 CIF 数据
# generated using pymatgen
data_Ba7Ga4As9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.86544284
_cell_length_b   10.24540857
_cell_length_c   17.18932988
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba7Ga4As9
_chemical_formula_sum   'Ba14 Ga8 As18'
_cell_volume   1209.08486243
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.45114125  0.50000000  0.78376508  1.0
  Ba  Ba1  1  0.45114125  0.50000000  0.21623492  1.0
  Ba  Ba2  1  0.54885875  0.00000000  0.71623492  1.0
  Ba  Ba3  1  0.54885875  0.00000000  0.28376508  1.0
  Ba  Ba4  1  0.94560375  0.27731489  0.87525603  1.0
  Ba  Ba5  1  0.94560375  0.72268511  0.87525603  1.0
  Ba  Ba6  1  0.94560375  0.27731489  0.12474397  1.0
  Ba  Ba7  1  0.94560375  0.72268511  0.12474397  1.0
  Ba  Ba8  1  0.05439625  0.22268511  0.62474397  1.0
  Ba  Ba9  1  0.05439625  0.77731489  0.62474397  1.0
  Ba  Ba10  1  0.05439625  0.22268511  0.37525603  1.0
  Ba  Ba11  1  0.05439625  0.77731489  0.37525603  1.0
  Ba  Ba12  1  0.40535487  0.50000000  0.50000000  1.0
  Ba  Ba13  1  0.59464513  0.00000000  0.00000000  1.0
  Ga  Ga14  1  0.76557470  0.50000000  0.37645256  1.0
  Ga  Ga15  1  0.76557470  0.50000000  0.62354744  1.0
  Ga  Ga16  1  0.23442530  0.00000000  0.12354744  1.0
  Ga  Ga17  1  0.23442530  0.00000000  0.87645256  1.0
  Ga  Ga18  1  0.56973196  0.82348500  0.50000000  1.0
  Ga  Ga19  1  0.56973196  0.17651500  0.50000000  1.0
  Ga  Ga20  1  0.43026804  0.67651500  0.00000000  1.0
  Ga  Ga21  1  0.43026804  0.32348500  0.00000000  1.0
  As  As22  1  0.56035553  0.29125859  0.37206959  1.0
  As  As23  1  0.56035553  0.70874141  0.37206959  1.0
  As  As24  1  0.56035553  0.29125859  0.62793041  1.0
  As  As25  1  0.56035553  0.70874141  0.62793041  1.0
  As  As26  1  0.43964447  0.20874141  0.12793041  1.0
  As  As27  1  0.43964447  0.79125859  0.12793041  1.0
  As  As28  1  0.43964447  0.20874141  0.87206959  1.0
  As  As29  1  0.43964447  0.79125859  0.87206959  1.0
  As  As30  1  0.97765765  0.50000000  0.26292967  1.0
  As  As31  1  0.97765765  0.50000000  0.73707033  1.0
  As  As32  1  0.02234235  0.00000000  0.23707033  1.0
  As  As33  1  0.02234235  0.00000000  0.76292967  1.0
  As  As34  1  0.69263420  0.50000000  0.00000000  1.0
  As  As35  1  0.30736580  0.00000000  0.50000000  1.0
  As  As36  1  0.16754346  0.50000000  0.00000000  1.0
  As  As37  1  0.83245654  0.00000000  0.50000000  1.0
  As  As38  1  0.95226536  0.50000000  0.50000000  1.0
  As  As39  1  0.04773464  0.00000000  0.00000000  1.0
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