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Ti4CoBi2

高熵材料 HEA 传统材料 TRA

MP-ID: mp-567883 · 空间群: I4/mcm (#140)

基础信息

化学式
Ti4CoBi2
MP-ID
mp-567883
元素数
3
位点数
14
密度
8.2020
g/cm³
体积
270.63
ų
晶胞参数 a
4.8533
Å
晶胞参数 b
7.8518
Å
晶胞参数 c
7.8518
Å
α 角
84.52
°
β 角
72.00
°
γ 角
72.00
°
空间群
I4/mcm
点群
4/mmm
晶体系统
Tetragonal
布拉维格子
Tetragonal I
稳定性
是
堆积分数
0.7400

X 射线衍射

衍射图谱
横轴为 2θ (°),纵轴为相对强度,CuKa , λ=1.5406 Å
衍射峰(Top 24)
2θd (Å)Ihkl
11.85 7.4674 4.2 (0,1,0)
16.79 5.2802 2.3 (0,1,1)
26.33 3.3847 60.0 (1,0,-1)
26.33 3.3847 100.0 (1,2,0)
26.69 3.3395 53.3 (0,2,1)
33.96 2.6401 35.4 (0,2,2)
35.81 2.5077 10.8 (1,0,-2)
35.81 2.5077 75.8 (1,1,-2)
36.08 2.4891 18.6 (0,3,0)
37.05 2.4266 34.2 (2,1,1)
38.11 2.3614 13.1 (0,3,1)
39.03 2.3078 11.9 (2,1,0)
39.79 2.2652 47.2 (1,-1,-2)
40.93 2.2049 2.4 (2,0,0)
40.93 2.2049 7.1 (2,2,0)
43.71 2.0711 5.3 (0,3,2)
43.71 2.0711 5.3 (0,3,-2)
44.53 2.0347 3.0 (2,1,-1)
46.25 1.9631 4.8 (2,-1,0)
46.92 1.9367 6.7 (1,1,-3)
48.78 1.8669 17.7 (0,4,0)
50.17 1.8182 40.3 (1,-1,-3)
50.17 1.8182 5.8 (1,-1,4)
51.13 1.7866 20.8 (2,-1,-1)
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能量属性

形成能/原子
-0.31085
eV/atom
能量/原子
-26.30939
eV/atom
凸包距离
0.0000
eV/atom
未修正能量
-26.3094
eV/atom
体积/原子
19.33
ų
c/a 比
1.6178

电子属性

金属性
金属
带隙
0
eV
直接带隙
否
导带底 CBM
N/A
eV

磁性属性

磁性
是
总磁矩
0.0000
μB
磁有序
Unknown
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

组成概览

元素组成(原子分数)
组成信息
主元 / 基质元素
Ti · 0.571
元素家族
3d-TM
溶质分数
0.429
间隙分数
0.000

高熵合金特征

综合指标雷达(归一化)
元素类别占比
混合熵 ΔS/R
0.9557
高熵判据(>1.0 视为高熵)
混合熵 ΔS
7.9457
J/mol·K
Ω 参数
2.1045
Ω > 1.1 利于固溶体形成
原子尺寸错配 δr
7.333%
δr < 6.6% 利于单相固溶
电负性差 Δχ
0.2188
越小混合越稳定
价电子浓度 VEC
5.000
价电子浓度,影响相稳定性
混合焓 ΔH_mix
-5.729
kJ/mol 且负值为放热混合
熵归一化
0.8699
固溶体倾向
0
相趋势
IM

传统材料特征

ROM 混合特征雷达
评级与分类
评级 Tier
A
评分
0.727
家族
Ti-based Alloy
基质元素
Ti · 0.571

关联任务

引用参考

Materials Project 官方页面
https://materialsproject.org/materials/mp-567883
参考引用

The crystal structure and related material properties of Ti4CoBi2 were obtained from the Materials Project database (MP-ID: mp-567883, 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

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

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_Ti4CoBi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85326002
_cell_length_b   7.85177389
_cell_length_c   7.85177379
_cell_angle_alpha   84.51903681
_cell_angle_beta   71.99771792
_cell_angle_gamma   71.99771259
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ti4CoBi2
_chemical_formula_sum   'Ti8 Co2 Bi4'
_cell_volume   270.62662380
_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
  Ti  Ti0  1  0.42019310  0.27277458  0.88684122  1.0
  Ti  Ti1  1  0.69296668  0.88684122  0.72722542  1.0
  Ti  Ti2  1  0.80703332  0.27277458  0.11315878  1.0
  Ti  Ti3  1  0.19296668  0.72722542  0.88684122  1.0
  Ti  Ti4  1  0.07980690  0.11315878  0.72722542  1.0
  Ti  Ti5  1  0.92019310  0.88684122  0.27277458  1.0
  Ti  Ti6  1  0.57980690  0.72722542  0.11315878  1.0
  Ti  Ti7  1  0.30703332  0.11315878  0.27277458  1.0
  Co  Co8  1  0.25000000  0.00000000  -0.00000000  1.0
  Co  Co9  1  0.75000000  0.00000000  -0.00000000  1.0
  Bi  Bi10  1  0.35923503  0.78152894  0.50000000  1.0
  Bi  Bi11  1  0.85923503  0.50000000  0.78152894  1.0
  Bi  Bi12  1  0.14076497  0.50000000  0.21847106  1.0
  Bi  Bi13  1  0.64076497  0.21847106  0.50000000  1.0
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