Ge2As2O7

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-852714 · Space group: P-1 (#2)

Materials Project API

Basic Information

Formula

Ge2As2O7

MP-ID

mp-852714

Elements

Sites

Density

3.9707

g/cm³

Volume

681.02

Å³

Cell a

13.0729

Cell b

7.2141

Cell c

7.2826

α Angle

94.13

β Angle

90.70

γ Angle

96.10

Space Group

P-1

Point Group

-1

Crystal System

Triclinic

Bravais Lattice

Triclinic P

Stability

Packing Fraction

0.5240

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
6.80	12.9963	14.4	(1,0,0)
12.19	7.2623	28.4	(0,0,1)
13.47	6.5724	7.2	(1,-1,0)
13.63	6.4982	25.7	(2,0,0)
13.85	6.3946	8.1	(1,0,-1)
14.09	6.2860	2.1	(1,0,1)
14.76	6.0007	1.1	(1,1,0)
16.74	5.2954	14.0	(0,1,-1)
17.42	5.0898	55.0	(2,-1,0)
17.67	5.0190	15.2	(1,-1,1)
18.50	4.7964	1.5	(1,1,-1)
18.50	4.7949	85.5	(2,0,1)
18.72	4.7392	17.9	(1,-1,-1)
19.42	4.5718	1.8	(2,1,0)
19.85	4.4723	40.2	(1,1,1)
20.50	4.3321	9.5	(3,0,0)
20.94	4.2419	12.1	(2,-1,1)
21.69	4.0979	30.2	(2,-1,-1)
22.33	3.9805	100.0	(2,1,-1)
22.83	3.8956	6.9	(3,-1,0)
23.70	3.7538	2.9	(3,0,-1)
24.13	3.6880	4.1	(3,0,1)
24.52	3.6311	9.0	(0,0,2)
24.89	3.5769	1.6	(0,2,0)

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Energy Properties

Formation Energy/atom

1.52344

eV/atom

Energy/atom

-3.31493

eV/atom

Energy above Hull

3.4391

eV/atom

Uncorrected Energy

-3.0190

eV/atom

Volume/atom

15.48

Å³

c/a Ratio

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

2.8018

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.004110

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.636

Element Family

Metalloid-Nonmetal

Solute Fraction

0.364

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.9075

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

7.5452

J/mol·K

Ω Parameter

0.0000

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

35.469%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.6490

smaller = more stable mixing

VEC

3.818

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

0.000

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8261

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.361

Family

O-rich Multi-Component

Matrix Element

O · 0.636

Related Tasks

Related computation task IDs (2)

aaabwnks aaabwtaz

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-852714

Reference Citation

The crystal structure and related material properties of Ge2As2O7 were obtained from the Materials Project database (MP-ID: mp-852714, 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

BibTeX

@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

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Raw CIF Data

# generated using pymatgen
data_Ge2As2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.07289900
_cell_length_b   7.21412403
_cell_length_c   7.28262788
_cell_angle_alpha   94.12946567
_cell_angle_beta   90.70420255
_cell_angle_gamma   96.09822528
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ge2As2O7
_chemical_formula_sum   'Ge8 As8 O28'
_cell_volume   681.02387152
_cell_formula_units_Z   4
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
  Ge  Ge0  1  0.91613300  0.12079500  0.93230000  1.0
  Ge  Ge1  1  0.50906000  0.19119700  0.31174500  1.0
  Ge  Ge2  1  0.12938900  0.38103000  0.66207500  1.0
  Ge  Ge3  1  0.65429900  0.40562800  0.26339500  1.0
  Ge  Ge4  1  0.34570100  0.59437200  0.73660500  1.0
  Ge  Ge5  1  0.87061100  0.61897000  0.33792500  1.0
  Ge  Ge6  1  0.49094000  0.80880300  0.68825500  1.0
  Ge  Ge7  1  0.08386700  0.87920500  0.06770000  1.0
  As  As8  1  0.31280500  0.02691200  0.84002100  1.0
  As  As9  1  0.07459100  0.16155600  0.39827500  1.0
  As  As10  1  0.73422800  0.34475500  0.83555300  1.0
  As  As11  1  0.26396200  0.33583500  0.07507000  1.0
  As  As12  1  0.73603800  0.66416500  0.92493000  1.0
  As  As13  1  0.26577200  0.65524500  0.16444700  1.0
  As  As14  1  0.92540900  0.83844400  0.60172500  1.0
  As  As15  1  0.68719500  0.97308800  0.15997900  1.0
  O  O16  1  0.26874100  0.96912000  0.05420000  1.0
  O  O17  1  0.07297900  0.05597300  0.77854000  1.0
  O  O18  1  0.68541500  0.09814900  0.30514600  1.0
  O  O19  1  0.32507400  0.14094600  0.42482300  1.0
  O  O20  1  0.83844700  0.21740200  0.79485300  1.0
  O  O21  1  0.03967000  0.17136200  0.14393700  1.0
  O  O22  1  0.42878600  0.22745700  0.08750600  1.0
  O  O23  1  0.62226000  0.30785900  0.41757000  1.0
  O  O24  1  0.28640900  0.32507500  0.82190800  1.0
  O  O25  1  0.08994900  0.30207300  0.44684000  1.0
  O  O26  1  0.80387800  0.36737800  0.08639500  1.0
  O  O27  1  0.92783700  0.41942800  0.77053000  1.0
  O  O28  1  0.43724100  0.43752700  0.15570200  1.0
  O  O29  1  0.24222300  0.48994800  0.59008300  1.0
  O  O30  1  0.75777700  0.51005200  0.40991700  1.0
  O  O31  1  0.56275900  0.56247300  0.84429800  1.0
  O  O32  1  0.07216300  0.58057200  0.22947000  1.0
  O  O33  1  0.19612200  0.63262200  0.91360500  1.0
  O  O34  1  0.91005100  0.69792700  0.55316000  1.0
  O  O35  1  0.71359100  0.67492500  0.17809200  1.0
  O  O36  1  0.37774000  0.69214100  0.58243000  1.0
  O  O37  1  0.57121400  0.77254300  0.91249400  1.0
  O  O38  1  0.96033000  0.82863800  0.85606300  1.0
  O  O39  1  0.16155300  0.78259800  0.20514700  1.0
  O  O40  1  0.67492600  0.85905400  0.57517700  1.0
  O  O41  1  0.31458500  0.90185100  0.69485400  1.0
  O  O42  1  0.92702100  0.94402700  0.22146000  1.0
  O  O43  1  0.73125900  0.03088000  0.94580000  1.0

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