Sr3Ag2

Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-30357 · Space group: R-3 (#148)

Materials Project API

Basic Information

Formula

Sr3Ag2

MP-ID

mp-30357

Elements

Sites

Density

4.4381

g/cm³

Volume

537.21

Å³

Cell a

8.4805

Cell b

8.4805

Cell c

8.4805

α Angle

72.15

β Angle

72.15

γ Angle

72.15

Space Group

R-3

Point Group

-3

Crystal System

Trigonal

Bravais Lattice

Stability

Packing Fraction

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
11.28	7.8472	50.4	(1,0,0)
13.96	6.3423	2.0	(1,1,0)
14.24	6.2183	12.4	(1,1,1)
17.76	4.9939	21.2	(1,0,-1)
21.09	4.2131	9.0	(1,1,-1)
22.66	3.9236	1.2	(2,0,0)
22.84	3.8937	2.7	(2,1,0)
26.01	3.4259	7.5	(1,2,2)
26.01	3.4259	15.1	(2,2,1)
27.70	3.2202	59.7	(2,0,-1)
28.14	3.1712	9.9	(0,2,2)
28.14	3.1712	19.8	(2,2,0)
28.71	3.1091	44.8	(2,2,2)
28.94	3.0853	99.6	(2,1,-1)
28.94	3.0853	49.8	(2,-1,1)
31.02	2.8832	73.0	(2,-1,-1)
31.67	2.8250	4.0	(1,1,3)
31.67	2.8250	8.0	(3,1,1)
33.47	2.6770	98.3	(3,1,0)
33.97	2.6394	100.0	(3,2,1)
34.28	2.6157	6.9	(3,0,0)
35.24	2.5468	1.5	(3,2,2)
35.97	2.4970	2.0	(2,0,-2)
36.54	2.4589	27.1	(3,2,0)

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Energy Properties

Formation Energy/atom

-0.21550

eV/atom

Energy/atom

-17.84524

eV/atom

Energy above Hull

0.0033

eV/atom

Uncorrected Energy

-17.8452

eV/atom

Volume/atom

35.81

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

0.0000

μB

Mag. Ordering

Unknown

Mag. Sites

Magnetization/Volume

0.000000

μB/Å³

Elastic Properties

K_VRH

21.352

GPa

G_VRH

9.351

GPa

Young's Modulus E

24.479

GPa

Poisson Ratio ν

0.309

Pugh Ratio K/G

2.283

Vickers Hardness Est.

0.000

GPa

Ductility

Brittle

Anisotropy

0.811

Lame λ

15.118

GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Sr · 0.600

Element Family

N/A

Solute Fraction

0.400

Interstitial Fraction

0.000

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.664

Family

Binary Alloy

Matrix Element

Sr · 0.600

Elasticity Features

Elastic Modulus Comparison (GPa)

Elastic Features

Elastic Anisotropy A^U

0.8110

Homogeneous Poisson ν

0.3090

Debye Temperature

191.2

Sound Velocity

1,623.2

m/s

Homogeneity

0.3090

Related Tasks

Related computation task IDs (5)

aaadnitf aaadrclc aaaelcxa aaaetnlj aaafrzfd

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-30357

Reference Citation

The crystal structure and related material properties of Sr3Ag2 were obtained from the Materials Project database (MP-ID: mp-30357, database version v2026.04.13).

Literature Citation

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

3D Crystal Structure Rendering

Loading 3D structure…

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Raw CIF Data

# generated using pymatgen
data_Sr3Ag2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.48051405
_cell_length_b   8.48051413
_cell_length_c   8.48051514
_cell_angle_alpha   72.15370668
_cell_angle_beta   72.15371597
_cell_angle_gamma   72.15370861
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr3Ag2
_chemical_formula_sum   'Sr9 Ag6'
_cell_volume   537.20857671
_cell_formula_units_Z   3
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
  Sr  Sr0  1  0.16618408  0.88793044  0.66278254  1.0
  Sr  Sr1  1  0.88793044  0.66278254  0.16618408  1.0
  Sr  Sr2  1  0.66278254  0.16618408  0.88793044  1.0
  Sr  Sr3  1  0.83381592  0.11206856  0.33721746  1.0
  Sr  Sr4  1  0.11206856  0.33721746  0.83381592  1.0
  Sr  Sr5  1  0.33721746  0.83381592  0.11206856  1.0
  Sr  Sr6  1  0.50000000  0.50000000  0.50000000  1.0
  Sr  Sr7  1  0.29450786  0.29450786  0.29450786  1.0
  Sr  Sr8  1  0.70549214  0.70549214  0.70549214  1.0
  Ag  Ag9  1  0.53972390  0.91274260  0.36085972  1.0
  Ag  Ag10  1  0.91274260  0.36085972  0.53972390  1.0
  Ag  Ag11  1  0.36085972  0.53972390  0.91274260  1.0
  Ag  Ag12  1  0.46027610  0.08725740  0.63914028  1.0
  Ag  Ag13  1  0.08725740  0.63914028  0.46027610  1.0
  Ag  Ag14  1  0.63914028  0.46027610  0.08725740  1.0

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