Sr24Ta8O43

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-675061 · Space group: P1 (#1)

Materials Project API

Basic Information

Formula

Sr24Ta8O43

MP-ID

mp-675061

Elements

Sites

Density

5.6707

g/cm³

Volume

1,241.13

Å³

Cell a

6.0383

Cell b

6.0569

Cell c

39.0507

α Angle

85.77

β Angle

87.17

γ Angle

60.63

Space Group

Point Group

Crystal System

Triclinic

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
2.27	38.9400	5.4	(0,0,1)
6.81	12.9800	1.2	(0,0,3)
16.82	5.2699	1.1	(0,1,0)
17.02	5.2104	1.4	(1,1,1)
17.31	5.1225	1.4	(1,1,2)
17.68	5.0154	2.4	(0,1,-2)
17.80	4.9826	28.6	(0,1,3)
17.90	4.9565	1.6	(1,1,3)
17.94	4.9435	23.3	(1,1,-2)
18.10	4.9021	11.1	(1,0,3)
18.23	4.8675	31.0	(0,0,8)
20.51	4.3296	23.1	(1,0,-5)
20.88	4.2536	26.0	(0,1,-5)
21.10	4.2106	21.9	(1,1,6)
22.57	3.9393	1.2	(0,1,7)
24.17	3.6816	1.2	(0,1,8)
24.23	3.6734	3.0	(1,1,-7)
25.82	3.4509	1.3	(1,1,9)
25.93	3.4360	1.1	(1,1,-8)
26.88	3.3174	1.9	(1,0,-9)
27.49	3.2450	1.8	(0,0,12)
27.61	3.2308	1.3	(1,1,10)
27.70	3.2206	1.3	(0,1,10)
27.73	3.2172	1.4	(1,1,-9)

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Energy Properties

Formation Energy/atom

-3.27235

eV/atom

Energy/atom

-7.91657

eV/atom

Energy above Hull

0.0524

eV/atom

Uncorrected Energy

-7.5227

eV/atom

Volume/atom

16.55

Å³

c/a Ratio

6.4671

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

1.9703

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.001590

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.573

Element Family

Metalloid-Nonmetal

Solute Fraction

0.427

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.9223

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

7.6679

J/mol·K

Ω Parameter

0.0000

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

56.507%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

1.1739

smaller = more stable mixing

VEC

3.467

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

0.000

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8395

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.479

Family

O-rich Multi-Component

Matrix Element

O · 0.573

Related Tasks

Related computation task IDs (1)

aaacyapa

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-675061

Reference Citation

The crystal structure and related material properties of Sr24Ta8O43 were obtained from the Materials Project database (MP-ID: mp-675061, 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_Sr24Ta8O43
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.03834200
_cell_length_b   6.05689034
_cell_length_c   39.05068628
_cell_angle_alpha   85.77241381
_cell_angle_beta   87.17397991
_cell_angle_gamma   60.63033484
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr24Ta8O43
_chemical_formula_sum   'Sr24 Ta8 O43'
_cell_volume   1241.13016275
_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  0.63072200  0.60587100  0.02604500  1.0
  Sr  Sr1  1  0.28763600  0.28243000  0.06288200  1.0
  Sr  Sr2  1  0.25725300  0.23811100  0.15098200  1.0
  Sr  Sr3  1  0.98282200  0.88365600  0.09848300  1.0
  Sr  Sr4  1  0.96614900  0.89416000  0.18869000  1.0
  Sr  Sr5  1  0.90866500  0.89423500  0.28221400  1.0
  Sr  Sr6  1  0.65184900  0.51897100  0.21593200  1.0
  Sr  Sr7  1  0.48435900  0.49760700  0.41434900  1.0
  Sr  Sr8  1  0.56420800  0.58857600  0.31244000  1.0
  Sr  Sr9  1  0.15485700  0.07452900  0.52497700  1.0
  Sr  Sr10  1  0.15972500  0.15850300  0.43573000  1.0
  Sr  Sr11  1  0.23607400  0.19078700  0.34675800  1.0
  Sr  Sr12  1  0.85000200  0.75105400  0.57212500  1.0
  Sr  Sr13  1  0.87083500  0.73785400  0.48140300  1.0
  Sr  Sr14  1  0.72696400  0.75075300  0.66526400  1.0
  Sr  Sr15  1  0.47612400  0.31589800  0.77157300  1.0
  Sr  Sr16  1  0.53504800  0.37926300  0.58703000  1.0
  Sr  Sr17  1  0.40800300  0.42090100  0.68025100  1.0
  Sr  Sr18  1  0.13961800  0.99457700  0.73044900  1.0
  Sr  Sr19  1  0.10017400  0.01343300  0.82021600  1.0
  Sr  Sr20  1  0.03143900  0.03132300  0.91088500  1.0
  Sr  Sr21  1  0.77879100  0.64668500  0.83390800  1.0
  Sr  Sr22  1  0.68144000  0.70139100  0.92826300  1.0
  Sr  Sr23  1  0.34472800  0.28731300  0.97268700  1.0
  Ta  Ta24  1  0.00100700  0.98746400  0.99668400  1.0
  Ta  Ta25  1  0.61739900  0.57857100  0.12470400  1.0
  Ta  Ta26  1  0.25819200  0.27235100  0.25171600  1.0
  Ta  Ta27  1  0.87978100  0.89951600  0.37772500  1.0
  Ta  Ta28  1  0.50224400  0.44054000  0.50256100  1.0
  Ta  Ta29  1  0.12722100  0.15605200  0.62693400  1.0
  Ta  Ta30  1  0.75761500  0.69675200  0.75001300  1.0
  Ta  Ta31  1  0.37568000  0.42086900  0.87334100  1.0
  O  O32  1  0.38735800  0.93199100  0.10382900  1.0
  O  O33  1  0.68012100  0.16872600  0.02319100  1.0
  O  O34  1  0.84426400  0.52059100  0.08268900  1.0
  O  O35  1  0.83844500  0.68074200  0.15059300  1.0
  O  O36  1  0.39337100  0.46484800  0.10530900  1.0
  O  O37  1  0.16627700  0.70788100  0.03019100  1.0
  O  O38  1  0.61344400  0.11058000  0.23200600  1.0
  O  O39  1  0.38462000  0.67162000  0.16671800  1.0
  O  O40  1  0.89345900  0.21198800  0.38475400  1.0
  O  O41  1  0.30613400  0.56752700  0.25777500  1.0
  O  O42  1  0.12277000  0.20544600  0.21304600  1.0
  O  O43  1  0.84295300  0.21861200  0.14410600  1.0
  O  O44  1  0.23859400  0.76585600  0.35899900  1.0
  O  O45  1  0.89938900  0.50499200  0.26742400  1.0
  O  O46  1  0.29665800  0.78625500  0.47550600  1.0
  O  O47  1  0.31604500  0.02697400  0.28830200  1.0
  O  O48  1  0.79882000  0.75841200  0.34019400  1.0
  O  O49  1  0.51689200  0.09330300  0.39457100  1.0
  O  O50  1  0.76727600  0.36436200  0.46650900  1.0
  O  O51  1  0.68753500  0.57008000  0.53195800  1.0
  O  O52  1  0.30412800  0.31780100  0.47879400  1.0
  O  O53  1  0.99605100  0.67025200  0.41661000  1.0
  O  O54  1  0.49419300  0.00893900  0.61254200  1.0
  O  O55  1  0.22816100  0.57802000  0.53899000  1.0
  O  O56  1  0.55874000  0.03944800  0.72153400  1.0
  O  O57  1  0.13132700  0.48026600  0.62695300  1.0
  O  O58  1  0.02740300  0.06455200  0.58754300  1.0
  O  O59  1  0.69789700  0.10105300  0.52765500  1.0
  O  O60  1  0.03801100  0.59713000  0.71676700  1.0
  O  O61  1  0.75994500  0.36645400  0.64092400  1.0
  O  O62  1  0.89988600  0.85748600  0.78035200  1.0
  O  O63  1  0.57173100  0.57321200  0.72265200  1.0
  O  O64  1  0.22205400  0.93336000  0.66713900  1.0
  O  O65  1  0.45450200  0.83232000  0.78349300  1.0
  O  O66  1  0.74803900  0.26784600  0.86224000  1.0
  O  O67  1  0.40029200  0.73850100  0.87451500  1.0
  O  O68  1  0.90881300  0.32416100  0.96803800  1.0
  O  O69  1  0.28270600  0.33285900  0.83275600  1.0
  O  O70  1  0.90425300  0.36879300  0.77782700  1.0
  O  O71  1  0.01104100  0.65813000  0.88453900  1.0
  O  O72  1  0.34381500  0.85945800  0.97180300  1.0
  O  O73  1  0.87126300  0.87526900  0.96227800  1.0
  O  O74  1  0.41845400  0.19565900  0.91192400  1.0

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