Li8VFe7(PO4)12

High-Entropy Materials HEA

MP-ID: mp-758577 · Space group: P1 (#1)

Materials Project API

Basic Information

Formula

Li8VFe7(PO4)12

MP-ID

mp-758577

Elements

Sites

Density

2.9441

g/cm³

Volume

923.34

Å³

Cell a

8.6516

Cell b

8.7639

Cell c

12.1779

α Angle

90.19

β Angle

90.06

γ Angle

90.04

Space Group

Point Group

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
14.55	6.0889	19.5	(0,0,2)
16.12	5.4997	16.3	(1,-1,1)
16.12	5.4997	14.6	(1,1,-1)
16.14	5.4926	16.1	(1,-1,-1)
16.16	5.4863	16.1	(1,1,1)
20.27	4.3819	66.6	(0,2,0)
20.49	4.3352	80.8	(1,1,-2)
20.49	4.3336	83.3	(1,-1,2)
20.53	4.3266	80.4	(1,-1,-2)
20.53	4.3258	80.9	(2,0,0)
20.55	4.3220	77.6	(1,1,2)
21.53	4.1275	7.3	(0,2,-1)
21.58	4.1188	7.8	(0,2,1)
22.92	3.8801	48.1	(2,-1,0)
22.93	3.8779	52.4	(2,1,0)
23.88	3.7258	25.2	(1,-2,1)
23.89	3.7248	24.0	(1,2,-1)
23.92	3.7203	25.3	(1,-2,-1)
23.94	3.7174	25.5	(1,2,1)
24.07	3.6976	29.3	(2,-1,1)
24.07	3.6976	26.5	(2,1,-1)
24.08	3.6964	27.5	(2,-1,-1)
24.10	3.6926	28.6	(2,1,1)
24.21	3.6763	100.0	(1,0,-3)

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Energy Properties

Formation Energy/atom

-2.45370

eV/atom

Energy/atom

-7.53440

eV/atom

Energy above Hull

0.0164

eV/atom

Uncorrected Energy

-6.8704

eV/atom

Volume/atom

12.15

Å³

c/a Ratio

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

37.0005

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.040070

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.632

Element Family

Metalloid-Nonmetal

Solute Fraction

0.368

Interstitial Fraction

0.158

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0953

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

9.1063

J/mol·K

Ω Parameter

0.3318

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

40.109%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.8779

smaller = more stable mixing

VEC

4.224

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-9.001

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6805

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaaedwff

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-758577

Reference Citation

The crystal structure and related material properties of Li8VFe7(PO4)12 were obtained from the Materials Project database (MP-ID: mp-758577, 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_Li8VFe7(PO4)12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.65158100
_cell_length_b   8.76392526
_cell_length_c   12.17788560
_cell_angle_alpha   90.18944002
_cell_angle_beta   90.05692464
_cell_angle_gamma   90.04113512
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li8VFe7(PO4)12
_chemical_formula_sum   'Li8 V1 Fe7 P12 O48'
_cell_volume   923.34357644
_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
  Li  Li0  1  0.21720700  0.72246300  0.18136600  1.0
  Li  Li1  1  0.21818300  0.77721400  0.81829200  1.0
  Li  Li2  1  0.28230800  0.22277900  0.31959800  1.0
  Li  Li3  1  0.28280400  0.27800300  0.68192900  1.0
  Li  Li4  1  0.71653100  0.72487700  0.31738300  1.0
  Li  Li5  1  0.71524400  0.78188600  0.68123800  1.0
  Li  Li6  1  0.78408200  0.22214900  0.18156600  1.0
  Li  Li7  1  0.78429600  0.27794600  0.82047200  1.0
  V  V8  1  0.75389400  0.46154300  0.61060400  1.0
  Fe  Fe9  1  0.24788800  0.95970400  0.61358100  1.0
  Fe  Fe10  1  0.24900400  0.54194000  0.38667300  1.0
  Fe  Fe11  1  0.25112500  0.04100800  0.11304800  1.0
  Fe  Fe12  1  0.25122900  0.45866700  0.88725300  1.0
  Fe  Fe13  1  0.74995500  0.54113400  0.11113300  1.0
  Fe  Fe14  1  0.74845000  0.96075300  0.88794600  1.0
  Fe  Fe15  1  0.75052100  0.03732100  0.38690200  1.0
  P  P16  1  0.03961500  0.24865400  0.49859400  1.0
  P  P17  1  0.10532600  0.39315400  0.14724300  1.0
  P  P18  1  0.10588500  0.10657600  0.85269700  1.0
  P  P19  1  0.39590900  0.60377900  0.64614400  1.0
  P  P20  1  0.39402100  0.89347200  0.35348700  1.0
  P  P21  1  0.46085100  0.74980200  0.00032300  1.0
  P  P22  1  0.53977300  0.25050100  0.00059500  1.0
  P  P23  1  0.60561400  0.39280400  0.35334600  1.0
  P  P24  1  0.60457900  0.10892600  0.64473900  1.0
  P  P25  1  0.89483600  0.60757900  0.85008700  1.0
  P  P26  1  0.89461100  0.89281600  0.14710300  1.0
  P  P27  1  0.96084400  0.74797300  0.49927700  1.0
  O  O28  1  0.05486400  0.63839900  0.43033900  1.0
  O  O29  1  0.05255400  0.85304500  0.57532800  1.0
  O  O30  1  0.07335400  0.89497800  0.15627100  1.0
  O  O31  1  0.07251200  0.60371900  0.84073500  1.0
  O  O32  1  0.14095300  0.16657400  0.58412800  1.0
  O  O33  1  0.14507400  0.34022000  0.42198100  1.0
  O  O34  1  0.15488400  0.43372900  0.03011000  1.0
  O  O35  1  0.15595600  0.06671800  0.96971900  1.0
  O  O36  1  0.16217900  0.23249300  0.18072600  1.0
  O  O37  1  0.16222600  0.26790800  0.81946900  1.0
  O  O38  1  0.17457800  0.51473600  0.22571100  1.0
  O  O39  1  0.17473800  0.98476400  0.77403700  1.0
  O  O40  1  0.32565000  0.01495600  0.27468500  1.0
  O  O41  1  0.32856600  0.48413800  0.72536300  1.0
  O  O42  1  0.34704400  0.76688700  0.68063500  1.0
  O  O43  1  0.33691500  0.73256400  0.31994300  1.0
  O  O44  1  0.34906700  0.56632700  0.52891900  1.0
  O  O45  1  0.34273900  0.93470400  0.47068400  1.0
  O  O46  1  0.35203700  0.83719900  0.07983400  1.0
  O  O47  1  0.35185700  0.66216700  0.92062900  1.0
  O  O48  1  0.42732800  0.11147500  0.65714500  1.0
  O  O49  1  0.42868700  0.39384300  0.34926900  1.0
  O  O50  1  0.44398500  0.14210500  0.07112900  1.0
  O  O51  1  0.44400000  0.35829800  0.92917800  1.0
  O  O52  1  0.55679800  0.64229400  0.07191100  1.0
  O  O53  1  0.55671000  0.85734200  0.92866700  1.0
  O  O54  1  0.57907900  0.59458100  0.65408400  1.0
  O  O55  1  0.57247500  0.89519100  0.34366200  1.0
  O  O56  1  0.64748600  0.33819200  0.08115700  1.0
  O  O57  1  0.64833100  0.16427700  0.92010900  1.0
  O  O58  1  0.65453000  0.06895800  0.52902200  1.0
  O  O59  1  0.66105200  0.43067300  0.47679100  1.0
  O  O60  1  0.66537500  0.23394300  0.32257300  1.0
  O  O61  1  0.66576100  0.27643500  0.67385600  1.0
  O  O62  1  0.67744600  0.51691200  0.28117900  1.0
  O  O63  1  0.67700400  0.99338900  0.72520700  1.0
  O  O64  1  0.82594500  0.01376500  0.22623000  1.0
  O  O65  1  0.82602000  0.48621100  0.76565300  1.0
  O  O66  1  0.83762200  0.73139500  0.17956900  1.0
  O  O67  1  0.83547200  0.76714200  0.81688300  1.0
  O  O68  1  0.84037500  0.56053200  0.96403400  1.0
  O  O69  1  0.84421900  0.93288900  0.03014900  1.0
  O  O70  1  0.84852600  0.65120700  0.57848600  1.0
  O  O71  1  0.84723800  0.83325100  0.42405000  1.0
  O  O72  1  0.92699100  0.10510100  0.84375000  1.0
  O  O73  1  0.92631000  0.39587300  0.15583900  1.0
  O  O74  1  0.94107400  0.14216400  0.43018100  1.0
  O  O75  1  0.93182000  0.36091600  0.56837200  1.0

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