Pm2ZnPt

High-Entropy Materials HEA Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-983154 · Space group: Fm-3m (#225)

Materials Project API

Basic Information

Formula

Pm2ZnPt

MP-ID

mp-983154

Elements

Sites

Density

9.7857

g/cm³

Volume

93.41

Å³

Cell a

5.0930

Cell b

5.0930

Cell c

5.0930

α Angle

60.00

β Angle

60.00

γ Angle

60.00

Space Group

Fm-3m

Point Group

m-3m

Crystal System

Cubic

Bravais Lattice

Stability

Yes

Packing Fraction

0.7405

X-ray Diffraction

Diffraction Pattern

Target / Radiation

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

Diffraction Peaks (Top 10)

2θ	d (Å)	I	hkl
21.37	4.1584	10.6	(1,1,1)
35.24	2.5465	100.0	(2,1,1)
41.59	2.1717	5.9	(2,2,1)
50.70	1.8007	17.8	(2,2,0)
55.62	1.6524	2.7	(3,2,2)
63.25	1.4702	36.5	(3,3,2)
67.58	1.3861	2.0	(3,3,3)
74.53	1.2733	11.3	(4,2,2)
78.58	1.2175	2.1	(4,3,2)
85.21	1.1388	16.2	(4,3,1)

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Energy Properties

Formation Energy/atom

-0.68836

eV/atom

Energy/atom

-4.89635

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-30.6333

eV/atom

Volume/atom

23.35

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

75.923

GPa

G_VRH

25.950

GPa

Young's Modulus E

69.888

GPa

Poisson Ratio ν

0.347

Pugh Ratio K/G

2.926

Vickers Hardness Est.

0.827

GPa

Ductility

Brittle

Anisotropy

0.007

Lame λ

58.623

GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Pm · 0.500

Element Family

Lanthanide

Solute Fraction

0.500

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0397

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

8.6442

J/mol·K

Ω Parameter

2.0587

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

15.126%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.4732

smaller = more stable mixing

VEC

8.000

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-5.752

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9464

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.509

Family

Pm-rich Multi-Component

Matrix Element

Pm · 0.500

Elasticity Features

Elastic Modulus Comparison (GPa)

Elastic Features

Elastic Anisotropy A^U

0.0070

Homogeneous Poisson ν

0.3470

Debye Temperature

244.6

Sound Velocity

1,830.0

m/s

Homogeneity

0.3470

Related Tasks

Related computation task IDs (5)

aaadobnk aaadwlib aaaegugs aaaetgpt aaafizqe

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-983154

Reference Citation

The crystal structure and related material properties of Pm2ZnPt were obtained from the Materials Project database (MP-ID: mp-983154, 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_Pm2ZnPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.09301845
_cell_length_b   5.09301845
_cell_length_c   5.09301845
_cell_angle_alpha   60.00000000
_cell_angle_beta   60.00000000
_cell_angle_gamma   60.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pm2ZnPt
_chemical_formula_sum   'Pm2 Zn1 Pt1'
_cell_volume   93.41373770
_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
  Pm  Pm0  1  0.50000100  0.50000100  0.50000100  1.0
  Pm  Pm1  1  -0.00000000  0.00000000  0.00000000  1.0
  Zn  Zn2  1  0.75000000  0.75000000  0.75000000  1.0
  Pt  Pt3  1  0.25000000  0.25000000  0.25000000  1.0

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