Sr3PN

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1013536 · Space group: Pm-3m (#221)

Materials Project API

Basic Information

Formula

Sr3PN

MP-ID

mp-1013536

Elements

Sites

Density

2.8043

g/cm³

Volume

182.28

Å³

Cell a

5.6700

Cell b

5.6700

Cell c

5.6700

α Angle

90.00

β Angle

90.00

γ Angle

90.00

Space Group

Pm-3m

Point Group

m-3m

Crystal System

Cubic

Bravais Lattice

Stability

Packing Fraction

0.5236

X-ray Diffraction

Diffraction Pattern

Target / Radiation

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

Diffraction Peaks (Top 23)

2θ	d (Å)	I	hkl
15.63	5.6700	52.1	(1,0,0)
22.17	4.0093	6.5	(1,1,0)
27.24	3.2736	100.0	(1,1,1)
31.56	2.8350	80.2	(2,0,0)
35.40	2.5357	27.1	(2,1,0)
38.91	2.3148	3.8	(2,1,1)
45.23	2.0047	57.0	(2,2,0)
48.15	1.8900	14.1	(2,2,1)
50.93	1.7930	1.9	(3,1,0)
53.61	1.7096	44.3	(3,1,1)
56.20	1.6368	19.6	(2,2,2)
58.71	1.5726	6.3	(3,2,0)
61.16	1.5154	2.3	(3,2,1)
65.89	1.4175	9.0	(4,0,0)
68.19	1.3752	8.2	(4,1,0)
70.46	1.3364	1.2	(4,1,1)
72.69	1.3008	17.7	(3,3,1)
74.90	1.2679	25.0	(4,2,0)
77.08	1.2373	5.9	(4,2,1)
83.53	1.1574	19.0	(4,2,2)
85.66	1.1340	2.9	(4,3,0)
87.78	1.1120	1.4	(4,3,1)
89.90	1.0912	14.1	(5,1,1)

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Energy Properties

Formation Energy/atom

0.07294

eV/atom

Energy/atom

-12.64063

eV/atom

Energy above Hull

1.0257

eV/atom

Uncorrected Energy

-3.5296

eV/atom

Volume/atom

36.46

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0004

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000000

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Sr · 0.600

Element Family

Alkali-AlkEarth

Solute Fraction

0.400

Interstitial Fraction

0.400

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.9503

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

7.9005

J/mol·K

Ω Parameter

6.2103

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

34.277%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.8588

smaller = more stable mixing

VEC

3.200

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-0.898

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8650

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.374

Family

Interstitial Alloy

Matrix Element

Sr · 0.600

Related Tasks

Related computation task IDs (5)

aaadbnad aaadoniw aaadvtln aaaepbdv aaafbmri

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1013536

Reference Citation

The crystal structure and related material properties of Sr3PN were obtained from the Materials Project database (MP-ID: mp-1013536, 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_Sr3PN
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.67000000
_cell_length_b   5.67000000
_cell_length_c   5.67000000
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr3PN
_chemical_formula_sum   'Sr3 P1 N1'
_cell_volume   182.28426300
_cell_formula_units_Z   1
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  0.00000000  0.50000000  0.50000000  1.0
  Sr  Sr1  1  0.50000000  0.00000000  0.50000000  1.0
  Sr  Sr2  1  0.50000000  0.50000000  0.00000000  1.0
  P  P3  1  0.50000000  0.50000000  0.50000000  1.0
  N  N4  1  0.00000000  0.00000000  0.00000000  1.0

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