EuAgO3

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1077622 · Space group: Pm-3m (#221)

Materials Project API

Basic Information

Formula

EuAgO3

MP-ID

mp-1077622

Elements

Sites

Density

7.4746

g/cm³

Volume

68.39

Å³

Cell a

4.0894

Cell b

4.0894

Cell c

4.0894

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 9)

2θ	d (Å)	I	hkl
30.92	2.8916	100.0	(1,1,0)
38.12	2.3610	4.9	(1,1,1)
44.30	2.0447	29.0	(2,0,0)
55.00	1.6695	39.1	(2,1,1)
64.45	1.4458	17.6	(2,2,0)
73.19	1.2932	16.8	(3,1,0)
77.40	1.2330	1.5	(3,1,1)
81.54	1.1805	5.9	(2,2,2)
89.72	1.0929	21.0	(3,2,1)

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Energy Properties

Formation Energy/atom

-1.50666

eV/atom

Energy/atom

-7.10165

eV/atom

Energy above Hull

0.4033

eV/atom

Uncorrected Energy

-6.6895

eV/atom

Volume/atom

13.68

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

6.4884

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.094880

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.600

Element Family

Metalloid-Nonmetal

Solute Fraction

0.400

Interstitial Fraction

0.000

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

0.0000

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

51.877%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.9471

smaller = more stable mixing

VEC

6.000

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

0.000

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8650

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.334

Family

O-rich Multi-Component

Matrix Element

O · 0.600

Related Tasks

Related computation task IDs (5)

aaadfyvj aaadnytr aaadwdvo aaaeteap aaafsloo

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1077622

Reference Citation

The crystal structure and related material properties of EuAgO3 were obtained from the Materials Project database (MP-ID: mp-1077622, 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_EuAgO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.08937300
_cell_length_b   4.08937300
_cell_length_c   4.08937300
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuAgO3
_chemical_formula_sum   'Eu1 Ag1 O3'
_cell_volume   68.38646827
_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
  Eu  Eu0  1  0.50000000  0.50000000  0.50000000  1.0
  Ag  Ag1  1  0.00000000  0.00000000  0.00000000  1.0
  O  O2  1  0.50000000  0.00000000  0.00000000  1.0
  O  O3  1  0.00000000  0.50000000  0.00000000  1.0
  O  O4  1  0.00000000  0.00000000  0.50000000  1.0

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