LaSe2

Traditional Materials TRA

MP-ID: mp-1019091 · Space group: P4/nmm (#129)

Materials Project API

Basic Information

Formula

LaSe2

MP-ID

mp-1019091

Elements

Sites

Density

6.3513

g/cm³

Volume

155.21

Å³

Cell a

4.2250

Cell b

4.2250

Cell c

8.6949

α Angle

90.00

β Angle

90.00

γ Angle

90.00

Space Group

P4/nmm

Point Group

4/mmm

Crystal System

Tetragonal

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
20.43	4.3474	7.9	(0,0,2)
23.41	3.8001	37.1	(1,0,1)
29.48	3.0299	5.0	(1,0,2)
29.91	2.9875	33.2	(1,1,0)
30.85	2.8983	35.6	(0,0,3)
31.67	2.8254	73.2	(1,1,1)
36.49	2.4622	100.0	(1,1,2)
37.64	2.3900	53.5	(1,0,3)
41.54	2.1737	4.6	(0,0,4)
42.81	2.1125	58.2	(2,0,0)
43.50	2.0802	3.0	(1,1,3)
47.01	1.9329	4.0	(1,0,4)
47.87	1.9001	3.5	(2,0,2)
49.36	1.8464	10.2	(2,1,1)
52.03	1.7577	1.6	(1,1,4)
52.83	1.7329	1.8	(2,1,2)
53.69	1.7072	29.2	(2,0,3)
57.29	1.6081	15.4	(1,0,5)
58.29	1.5828	29.6	(2,1,3)
61.18	1.5150	5.8	(2,0,4)
61.72	1.5029	8.7	(1,1,5)
62.14	1.4938	19.0	(2,2,0)
65.45	1.4260	3.0	(2,1,4)
66.15	1.4127	1.3	(2,2,2)

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Energy Properties

Formation Energy/atom

-1.98549

eV/atom

Energy/atom

-21.44146

eV/atom

Energy above Hull

0.0397

eV/atom

Uncorrected Energy

-21.4415

eV/atom

Volume/atom

25.87

Å³

c/a Ratio

2.0580

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

0.0000

μB

Mag. Ordering

Unknown

Mag. Sites

Magnetization/Volume

0.000000

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Se · 0.667

Element Family

N/A

Solute Fraction

0.333

Interstitial Fraction

0.000

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.676

Family

Binary Alloy

Matrix Element

Se · 0.667

Related Tasks

Related computation task IDs (5)

aaadmmjx aaadrfmc aaaekwfo aaaeuwot aaafsrin

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1019091

Reference Citation

The crystal structure and related material properties of LaSe2 were obtained from the Materials Project database (MP-ID: mp-1019091, 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_LaSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.22501545
_cell_length_b   4.22501545
_cell_length_c   8.69487244
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaSe2
_chemical_formula_sum   'La2 Se4'
_cell_volume   155.21004249
_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
  La  La0  1  0.75000000  0.75000000  0.72471063  1.0
  La  La1  1  0.25000000  0.25000000  0.27528937  1.0
  Se  Se2  1  0.75000000  0.75000000  0.36563770  1.0
  Se  Se3  1  0.25000000  0.25000000  0.63436230  1.0
  Se  Se4  1  0.75000000  0.25000000  0.00000000  1.0
  Se  Se5  1  0.25000000  0.75000000  0.00000000  1.0

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