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HEAS Data Platform · 材料科学计算数据库

SmTlCd

高熵材料 HEA 传统材料 TRA 弹性数据 ELA

MP-ID: mp-1019255 · 空间群: P6_3/mmc (#194)

基础信息

化学式
SmTlCd
MP-ID
mp-1019255
元素数
3
位点数
6
密度
9.8710
g/cm³
体积
157.17
ų
晶胞参数 a
4.9307
Å
晶胞参数 b
4.9304
Å
晶胞参数 c
7.4656
Å
α 角
90.00
°
β 角
90.00
°
γ 角
120.00
°
空间群
P6_3/mmc
点群
6/mmm
晶体系统
Hexagonal
布拉维格子
Hexagonal P
稳定性
否
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
23.84 3.7328 14.9 (0,0,0,2)
24.01 3.7066 11.0 (1,0,-1,1)
24.01 3.7064 5.5 (0,1,-1,1)
31.84 2.8104 100.0 (1,0,-1,2)
31.84 2.8103 50.0 (0,1,-1,2)
36.44 2.4654 39.8 (2,-1,-1,0)
36.45 2.4652 79.7 (1,1,-2,0)
42.02 2.1501 2.8 (1,0,-1,3)
42.02 2.1500 1.4 (0,1,-1,3)
44.02 2.0572 5.9 (2,-1,-1,2)
44.02 2.0571 11.8 (1,1,-2,2)
44.12 2.0527 2.4 (2,0,-2,1)
44.12 2.0526 1.2 (0,2,-2,1)
48.79 1.8664 17.4 (0,0,0,4)
49.16 1.8533 29.8 (2,0,-2,2)
49.16 1.8532 14.9 (0,2,-2,2)
56.82 1.6204 1.2 (2,0,-2,3)
58.51 1.5775 1.2 (3,-1,-2,1)
58.51 1.5774 1.2 (2,1,-3,1)
58.51 1.5774 1.1 (1,2,-3,1)
62.41 1.4881 16.6 (2,-1,-1,4)
62.41 1.4880 33.1 (1,1,-2,4)
62.72 1.4814 14.3 (3,-1,-2,2)
62.72 1.4814 14.3 (2,1,-3,2)
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能量属性

形成能/原子
-0.29929
eV/atom
能量/原子
-2.98265
eV/atom
凸包距离
0.0164
eV/atom
未修正能量
-34.7491
eV/atom
体积/原子
26.20
ų
c/a 比
1.5141

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
0.0039
μB
磁有序
Unknown
磁性位点数
0
磁化强度/体积
0.000020
μB/ų

弹性属性

体积模量 KVRH
52.820
GPa
剪切模量 GVRH
28.712
GPa
杨氏模量 E
72.923
GPa
泊松比 ν
0.270
Pugh 比 K/G
1.840
维氏硬度估算
3.986
GPa
韧性
Brittle
各向异性
0.346
拉梅 λ
33.679
GPa

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
Sm · 0.333
元素家族
Lanthanide
溶质分数
0.667
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
1.0986
高熵判据(>1.0 视为高熵)
混合熵 ΔS
9.1339
J/mol·K
Ω 参数
1.4638
Ω > 1.1 利于固溶体形成
原子尺寸错配 δr
8.248%
δr < 6.6% 利于单相固溶
电负性差 Δχ
0.2304
越小混合越稳定
价电子浓度 VEC
7.000
价电子浓度,影响相稳定性
混合焓 ΔH_mix
-5.234
kJ/mol 且负值为放热混合
熵归一化
1.0000
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
C
评分
0.339
家族
Sm-rich Multi-Component
基质元素
Sm · 0.333

弹性数据特征

弹性模量对比 (GPa)
弹性特征
弹性各向异性 AU
0.3460
均匀泊松比 ν
0.2700
Debye 温度
216.5
K
声速
1,897.9
m/s
均匀度
0.2700

关联任务

引用参考

Materials Project 官方页面
https://materialsproject.org/materials/mp-1019255
参考引用

The crystal structure and related material properties of SmTlCd were obtained from the Materials Project database (MP-ID: mp-1019255, 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_SmTlCd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.93072322
_cell_length_b   4.93038338
_cell_length_c   7.46563114
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.00228013
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SmTlCd
_chemical_formula_sum   'Sm2 Tl2 Cd2'
_cell_volume   157.17320054
_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
  Sm  Sm0  1  -0.00000000  -0.00000000  0.50000000  1.0
  Sm  Sm1  1  -0.00000000  -0.00000000  -0.00000000  1.0
  Tl  Tl2  1  0.33330572  0.66660944  0.75000000  1.0
  Tl  Tl3  1  0.66669428  0.33339056  0.25000000  1.0
  Cd  Cd4  1  0.33332088  0.66664176  0.25000000  1.0
  Cd  Cd5  1  0.66667912  0.33335824  0.75000000  1.0
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