Mn7(P2O7)4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-778008 · Space group: C222_1 (#20)

Materials Project API

Basic Information

Formula

Mn7(P2O7)4

MP-ID

mp-778008

Elements

Sites

Density

3.4656

g/cm³

Volume

1,035.30

Å³

Cell a

6.6052

Cell b

6.6052

Cell c

23.9544

α Angle

90.00

β Angle

90.00

γ Angle

97.85

Space Group

C222_1

Point Group

222

Crystal System

Orthorhombic

Bravais Lattice

Orthorhombic C

Stability

Yes

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
7.38	11.9772	23.6	(0,0,2)
13.53	6.5433	2.7	(1,0,0)
14.03	6.3120	14.9	(1,0,1)
14.79	5.9886	6.8	(0,0,4)
15.43	5.7422	2.5	(1,0,2)
17.52	5.0610	27.9	(1,0,3)
17.81	4.9793	3.6	(1,-1,0)
18.20	4.8751	13.9	(1,-1,1)
21.78	4.0803	4.0	(1,1,2)
22.27	3.9924	2.9	(0,0,6)
23.01	3.8655	10.9	(1,0,5)
23.23	3.8287	3.2	(1,-1,4)
25.81	3.4524	1.3	(1,-1,5)
26.15	3.4081	3.4	(1,0,6)
27.26	3.2716	12.1	(2,0,0)
27.52	3.2415	8.9	(2,0,1)
28.28	3.1560	100.0	(2,0,2)
28.79	3.1005	34.9	(2,-1,0)
29.04	3.0749	30.2	(2,-1,1)
29.46	3.0324	5.7	(1,0,7)
29.51	3.0274	46.7	(2,0,3)
29.77	3.0016	4.3	(2,-1,2)
29.84	2.9943	94.5	(0,0,8)
30.94	2.8903	2.4	(2,-1,3)

Get direct link

Energy Properties

Formation Energy/atom

-2.55046

eV/atom

Energy/atom

-8.27141

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-7.5525

eV/atom

Volume/atom

12.04

Å³

c/a Ratio

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

66.0000

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.063750

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.651

Element Family

Metalloid-Nonmetal

Solute Fraction

0.349

Interstitial Fraction

0.186

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.8877

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

7.3807

J/mol·K

Ω Parameter

0.5209

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

34.986%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.7618

smaller = more stable mixing

VEC

4.674

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-4.846

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8081

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.613

Family

Interstitial Alloy

Matrix Element

O · 0.651

Related Tasks

Related computation task IDs (1)

aaaebcka

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-778008

Reference Citation

The crystal structure and related material properties of Mn7(P2O7)4 were obtained from the Materials Project database (MP-ID: mp-778008, 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…

Style: Ball & Stick | Drag to rotate · Scroll to zoom · Right-click to pan

Raw CIF Data

# generated using pymatgen
data_Mn7(P2O7)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.60516336
_cell_length_b   6.60516336
_cell_length_c   23.95444300
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   97.85001536
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn7(P2O7)4
_chemical_formula_sum   'Mn14 P16 O56'
_cell_volume   1035.29528700
_cell_formula_units_Z   2
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
  Mn  Mn0  1  0.07247600  0.07247600  0.00000000  1.0
  Mn  Mn1  1  0.03725800  0.32505500  0.13555300  1.0
  Mn  Mn2  1  0.32505500  0.03725800  0.86444700  1.0
  Mn  Mn3  1  0.30978900  0.30978900  0.50000000  1.0
  Mn  Mn4  1  0.57996700  0.28420500  0.62335000  1.0
  Mn  Mn5  1  0.28420500  0.57996700  0.37665000  1.0
  Mn  Mn6  1  0.72154100  0.27845900  0.25000000  1.0
  Mn  Mn7  1  0.27845900  0.72154100  0.75000000  1.0
  Mn  Mn8  1  0.42003300  0.71579500  0.12335000  1.0
  Mn  Mn9  1  0.71579500  0.42003300  0.87665000  1.0
  Mn  Mn10  1  0.69021100  0.69021100  0.00000000  1.0
  Mn  Mn11  1  0.96274200  0.67494500  0.63555300  1.0
  Mn  Mn12  1  0.67494500  0.96274200  0.36444700  1.0
  Mn  Mn13  1  0.92752400  0.92752400  0.50000000  1.0
  P  P14  1  0.18067400  0.07276800  0.37638100  1.0
  P  P15  1  0.07276800  0.18067400  0.62361900  1.0
  P  P16  1  0.22154600  0.29779900  0.26805800  1.0
  P  P17  1  0.29779900  0.22154600  0.73194200  1.0
  P  P18  1  0.52366900  0.24100600  0.11896500  1.0
  P  P19  1  0.24100600  0.52366900  0.88103500  1.0
  P  P20  1  0.18796000  0.59634300  0.00509000  1.0
  P  P21  1  0.59634300  0.18796000  0.99491000  1.0
  P  P22  1  0.40365700  0.81204000  0.49491000  1.0
  P  P23  1  0.81204000  0.40365700  0.50509000  1.0
  P  P24  1  0.75899400  0.47633100  0.38103500  1.0
  P  P25  1  0.47633100  0.75899400  0.61896500  1.0
  P  P26  1  0.70220100  0.77845400  0.23194200  1.0
  P  P27  1  0.77845400  0.70220100  0.76805800  1.0
  P  P28  1  0.92723200  0.81932600  0.12361900  1.0
  P  P29  1  0.81932600  0.92723200  0.87638100  1.0
  O  O30  1  0.02615300  0.01024200  0.90265700  1.0
  O  O31  1  0.01024200  0.02615300  0.09734300  1.0
  O  O32  1  0.12289200  0.12916900  0.31350600  1.0
  O  O33  1  0.12916900  0.12289200  0.68649400  1.0
  O  O34  1  0.04394700  0.29769000  0.22626800  1.0
  O  O35  1  0.29769000  0.04394700  0.77373200  1.0
  O  O36  1  0.42530700  0.02128300  0.11988100  1.0
  O  O37  1  0.02128300  0.42530700  0.88011900  1.0
  O  O38  1  0.09870300  0.38253800  0.02296600  1.0
  O  O39  1  0.38253800  0.09870300  0.97703400  1.0
  O  O40  1  0.28117800  0.27009100  0.40522800  1.0
  O  O41  1  0.27009100  0.28117800  0.59477200  1.0
  O  O42  1  0.22771000  0.40790000  0.75774700  1.0
  O  O43  1  0.40790000  0.22771000  0.24225300  1.0
  O  O44  1  0.08346500  0.66600000  0.12796900  1.0
  O  O45  1  0.66600000  0.08346500  0.87203100  1.0
  O  O46  1  0.36617900  0.39154900  0.12868600  1.0
  O  O47  1  0.39154900  0.36617900  0.87131400  1.0
  O  O48  1  0.02619500  0.74135000  0.00356400  1.0
  O  O49  1  0.74135000  0.02619500  0.99643600  1.0
  O  O50  1  0.26861500  0.50425000  0.29908400  1.0
  O  O51  1  0.50425000  0.26861500  0.70091600  1.0
  O  O52  1  0.60249300  0.29461300  0.05542900  1.0
  O  O53  1  0.29461300  0.60249300  0.94457100  1.0
  O  O54  1  0.31638800  0.61787500  0.46081600  1.0
  O  O55  1  0.61787500  0.31638800  0.53918400  1.0
  O  O56  1  0.28468200  0.70699100  0.65480400  1.0
  O  O57  1  0.70699100  0.28468200  0.34519600  1.0
  O  O58  1  0.71531800  0.29300900  0.15480400  1.0
  O  O59  1  0.29300900  0.71531800  0.84519600  1.0
  O  O60  1  0.68361200  0.38212500  0.96081600  1.0
  O  O61  1  0.38212500  0.68361200  0.03918400  1.0
  O  O62  1  0.70538700  0.39750700  0.44457100  1.0
  O  O63  1  0.39750700  0.70538700  0.55542900  1.0
  O  O64  1  0.49575000  0.73138500  0.20091600  1.0
  O  O65  1  0.73138500  0.49575000  0.79908400  1.0
  O  O66  1  0.97380500  0.25865000  0.50356400  1.0
  O  O67  1  0.25865000  0.97380500  0.49643600  1.0
  O  O68  1  0.60845100  0.63382100  0.37131400  1.0
  O  O69  1  0.63382100  0.60845100  0.62868600  1.0
  O  O70  1  0.91653500  0.33400000  0.62796900  1.0
  O  O71  1  0.33400000  0.91653500  0.37203100  1.0
  O  O72  1  0.77229000  0.59210000  0.25774700  1.0
  O  O73  1  0.59210000  0.77229000  0.74225300  1.0
  O  O74  1  0.72990900  0.71882200  0.09477200  1.0
  O  O75  1  0.71882200  0.72990900  0.90522800  1.0
  O  O76  1  0.90129700  0.61746200  0.52296600  1.0
  O  O77  1  0.61746200  0.90129700  0.47703400  1.0
  O  O78  1  0.97871700  0.57469300  0.38011900  1.0
  O  O79  1  0.57469300  0.97871700  0.61988100  1.0
  O  O80  1  0.95605300  0.70231000  0.72626800  1.0
  O  O81  1  0.70231000  0.95605300  0.27373200  1.0
  O  O82  1  0.87083100  0.87710800  0.18649400  1.0
  O  O83  1  0.87710800  0.87083100  0.81350600  1.0
  O  O84  1  0.98975800  0.97384700  0.59734300  1.0
  O  O85  1  0.97384700  0.98975800  0.40265700  1.0

Get direct link