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Ca(SmTe2)2

Alexandria ALEX

Alex-ID: agm003448120 · Space group: Cmcm (#63)

Basic Information

Formula
Ca(SmTe2)2
Alex-ID
agm003448120
Elements
3
Sites
14
Space group
Cmcm (#63)
Crystal system
orthorhombic
Volume
491.47
ų
Cell a
4.4036
Å
Cell b
7.5995
Å
Cell c
15.3441
Å
α angle
90.00
°
β angle
90.00
°
γ angle
106.84
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca(SmTe2)2
Ca
2.00 · 14.3%
Sm
4.00 · 28.6%
Te
8.00 · 57.1%

Energy & Stability

Energy above hull
0.0534
eV/atom
Formation energy
-1.4464
eV/atom
Corrected total energy
-68.2806
eV
Raw total energy
-68.2806
eV

Electronic Structure

Indirect band gap
0.4156
eV
Direct band gap
0.8312
eV
DOS at Fermi level
0.0018
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C4_731_spg63

Decomposition

Sm2Te3 CaTe

Computed at

2022-02-16 05:54:57.136057

Citation

Alexandria website
https://alexandria.icams.rub.de/
Attribution

The crystal structure and related material properties of this entry were obtained from the Alexandria database (Alex-ID: agm003448120).

Reference

Th. Cavignac, J. Schmidt, P.-P. De Breuck, A. Loew, T. F. T. Cerqueira, H.-C. Wang, A. Bochkarev, Y. Lysogorskiy, A. H. Romero, R. Drautz, S. Botti and M. A. L. Marques. AI-Driven expansion and application of the Alexandria database. J. Phys. Mater. 9, 025014 (2026). https://doi.org/10.1088/2515-7639/ae6620

BibTeX
@article{Cavignac2026Alexandria,
  author  = {Cavignac, Th{\'e}o and Schmidt, Jonathan and De Breuck, Pierre-Paul and Loew, Antoine
             and Cerqueira, Tiago F. T. and Wang, Hai-Chen and Bochkarev, Anton
             and Lysogorskiy, Yury and Romero, Aldo H. and Drautz, Ralf and Botti, Silvana
             and Marques, Miguel A. L.},
  title   = {{AI}-Driven expansion and application of the {A}lexandria database},
  journal = {Journal of Physics: Materials},
  year    = {2026},
  volume  = {9},
  number  = {2},
  pages   = {025014},
  doi     = {10.1088/2515-7639/ae6620},
  url     = {https://doi.org/10.1088/2515-7639/ae6620}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# CIF generated by HEAS from Alexandria entry agm003448120
data_agm003448120
_cell_length_a     4.40359
_cell_length_b     7.59946
_cell_length_c     15.34414
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  106.84183
_cell_volume       491.46621
_symmetry_space_group_name_H-M 'P 1'
_symmetry_Int_Tables_number 1
loop_
_symmetry_equiv_pos_as_xyz
  'x, y, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
  Ca1 Ca 0.61545 0.23089 0.75000 1.00000
  Ca2 Ca 0.38455 0.76911 0.25000 1.00000
  Sm1 Sm 0.13469 0.26939 0.42905 1.00000
  Sm2 Sm 0.86531 0.73061 0.92905 1.00000
  Sm3 Sm 0.13469 0.26939 0.07095 1.00000
  Sm4 Sm 0.86531 0.73061 0.57095 1.00000
  Te1 Te 0.77680 0.55361 0.12067 1.00000
  Te2 Te 0.77680 0.55361 0.37933 1.00000
  Te3 Te 0.22320 0.44639 0.87933 1.00000
  Te4 Te 0.22320 0.44639 0.62067 1.00000
  Te5 Te 0.96147 0.92293 0.75000 1.00000
  Te6 Te 0.03853 0.07707 0.25000 1.00000
  Te7 Te 0.50000 0.00000 0.00000 1.00000
  Te8 Te 0.50000 0.00000 0.50000 1.00000
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