material

TiNi
ID:

mp-1048
DOI:

10.17188/1187148

Warnings: [?]
  1. Large change in a lattice parameter during relaxation.
  2. Large change in volume during relaxation.
Tags: Nickel titanium (1/1) Nickel titanium (1/1) - monoclinic Nickel titanium (1/1) - martensite B19' Nickel titanium (1/1) - martensite Titanium nickel (1/1) - monoclinic Nickel titanium (1/1) - B19' Titanium nickel (1/1) Titanium nickel (1/1) - B19' Nickel titanium (1/1) - LT

Material Details

Final Magnetic Moment
0.000 μB

Calculated total magnetic moment for the unit cell within the magnetic ordering provided (see below). Typically accurate to the second digit.
Magnetic Ordering
NM
Formation Energy / Atom
-0.395 eV

Calculated formation energy from the elements normalized to per atom in the unit cell.

Energy Above Hull / Atom
0.001 eV

The energy of decomposition of this material into the set of most stable materials at this chemical composition, in eV/atom. Stability is tested against all potential chemical combinations that result in the material's composition. For example, a Co2O3 structure would be tested for decomposition against other Co2O3 structures, against Co and O2 mixtures, and against CoO and O2 mixtures.

Density
6.41 g/cm3

The calculated bulk crystalline density, typically underestimated due calculated cell volumes overestimated on average by 3% (+/- 6%)

Decomposes To
TiNi
Band Gap
0.000 eV

In general, band gaps computed with common exchange-correlation functionals such as the LDA and GGA are severely underestimated. Typically the disagreement is reported to be ~50% in the literature. Some internal testing by the Materials Project supports these statements; typically, we find that band gaps are underestimated by ~40%. We additionally find that several known insulators are predicted to be metallic.

Space Group

Hermann Mauguin
P21/m [11]
Hall
-P 2yb
Point Group
2/m
Crystal System
monoclinic

Band Structure

Density of States
Warning! Semi-local DFT tends to severely underestimate bandgaps. Please see the wiki for more info.

sign indicates spin ↑ ↓

X-Ray Diffraction

    Select radiation source:
  • Cu
  • Ag
  • Mo
  • Fe

Calculated powder diffraction pattern; note that peak spacings may be affected due to inaccuracies in calculated cell volume, which is typically overestimated on average by 3% (+/- 6%)

X-Ray Absorption Spectra

FEFF XANES

Select an element to display a spectrum averaged over all sites of that element in the structure.

Apply Gaussian smoothing:

0 eV
3 eV
FWHM: 0 eV

Download spectra for every symmetrically equivalent absorption site in the structure.

Download FEFF Input parameters.

Warning: These results are intended to be semi-quantitative in that corrections, such as edge shifts and Debye-Waller damping, have not been included.

Substrates

Reference for minimal coincident interface area (MCIA) and elastic energy:
substrate orientation:
No elastic tensor calculated for this material, so elastic energies not avaialable. Sorting by MCIA instead.
substrate material substrate orientation film orientation MCIA† [Å2]
LaAlO3 (mp-2920) <0 0 1> <1 1 1> 196.2
LaAlO3 (mp-2920) <1 0 1> <1 1 0> 235.3
LaAlO3 (mp-2920) <1 1 0> <1 1 1> 252.3
AlN (mp-661) <1 1 0> <1 0 -1> 81.2
AlN (mp-661) <1 1 1> <1 1 -1> 147.0
CeO2 (mp-20194) <1 0 0> <1 0 1> 146.7
CeO2 (mp-20194) <1 1 0> <1 0 0> 172.2
GaAs (mp-2534) <1 0 0> <1 0 1> 97.8
GaAs (mp-2534) <1 1 0> <0 0 1> 47.2
BaF2 (mp-1029) <1 1 0> <0 0 1> 224.2
GaN (mp-804) <0 0 1> <1 0 -1> 182.7
GaN (mp-804) <1 0 0> <0 1 0> 150.7
GaN (mp-804) <1 0 1> <0 0 1> 94.4
LaAlO3 (mp-2920) <1 0 0> <0 1 0> 219.2
AlN (mp-661) <0 0 1> <0 1 0> 109.6
AlN (mp-661) <1 0 0> <1 0 -1> 81.2
AlN (mp-661) <1 0 1> <0 0 1> 94.4
KCl (mp-23193) <1 0 0> <0 1 1> 126.6
KCl (mp-23193) <1 1 0> <0 0 1> 283.2
CeO2 (mp-20194) <1 1 1> <1 1 0> 305.9
GaAs (mp-2534) <1 1 1> <0 0 1> 165.2
BaF2 (mp-1029) <1 0 0> <0 1 1> 235.0
GaN (mp-804) <1 1 0> <0 1 0> 287.7
GaN (mp-804) <1 1 1> <0 1 1> 217.0
SiO2 (mp-6930) <0 0 1> <0 1 0> 150.7
SiO2 (mp-6930) <1 0 0> <1 0 -1> 81.2
SiO2 (mp-6930) <1 0 1> <1 0 -1> 142.1
SiO2 (mp-6930) <1 1 0> <0 1 0> 246.6
SiO2 (mp-6930) <1 1 1> <0 0 1> 106.2
DyScO3 (mp-31120) <0 0 1> <0 0 1> 94.4
DyScO3 (mp-31120) <0 1 0> <0 0 1> 129.8
DyScO3 (mp-31120) <0 1 1> <1 0 -1> 162.4
DyScO3 (mp-31120) <1 0 0> <0 0 1> 47.2
DyScO3 (mp-31120) <1 0 1> <0 1 1> 235.0
DyScO3 (mp-31120) <1 1 0> <0 0 1> 188.8
DyScO3 (mp-31120) <1 1 1> <1 1 1> 224.2
InAs (mp-20305) <1 0 0> <1 0 1> 73.4
InAs (mp-20305) <1 1 0> <0 0 1> 106.2
InAs (mp-20305) <1 1 1> <0 0 1> 200.6
ZnSe (mp-1190) <1 0 0> <1 0 1> 97.8
ZnSe (mp-1190) <1 1 0> <0 0 1> 47.2
ZnSe (mp-1190) <1 1 1> <0 0 1> 165.2
KTaO3 (mp-3614) <1 0 0> <0 0 1> 47.2
KTaO3 (mp-3614) <1 1 0> <1 0 0> 114.8
KTaO3 (mp-3614) <1 1 1> <1 1 -1> 171.4
CdS (mp-672) <1 1 1> <0 1 0> 205.5
Te2W (mp-22693) <0 1 0> <0 0 1> 224.2
Te2W (mp-22693) <1 1 1> <0 0 1> 224.2
CdS (mp-672) <0 0 1> <0 1 0> 150.7
CdS (mp-672) <1 0 0> <0 1 0> 178.1
Up to 50 entries displayed.
†minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Visualize with ELATE
Stiffness Tensor Cij (GPa)
246 131 96 0 -4 0
131 236 130 -0 -2 0
96 130 196 -0 -2 0
0 -0 -0 84 0 -1
-4 -2 -2 0 5 0
0 0 0 -1 0 92
Compliance Tensor Sij (10-12Pa-1)
6 -2.6 -1.1 0 3.1 0
-2.6 7.9 -3.9 0 -0.1 0
-1.1 -3.9 8.3 0 0.3 0
0 0 0 11.9 0 0.2
3.1 -0.1 0.3 0 204.5 0
0 0 0 0.2 0 10.9
Shear Modulus GV
58 GPa
Bulk Modulus KV
155 GPa
Shear Modulus GR
19 GPa
Bulk Modulus KR
150 GPa
Shear Modulus GVRH
38 GPa
Bulk Modulus KVRH
152 GPa
Elastic Anisotropy
10.41
Poisson's Ratio
0.38

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
CeGaPd2 (mp-639863) 0.6818 0.000 3
ZrRh (mp-669917) 0.5394 0.000 2
HfIr (mp-1007786) 0.6719 0.000 2
YAl (mp-11228) 0.7141 0.008 2
TiNi (mp-1067248) 0.7207 0.000 2
ZrPd (mp-13495) 0.7136 0.000 2
Si (mp-1001113) 0.7347 0.477 1
Up to 5 similar elemental, binary, ternary, quaternary, etc. structures displayed (dissimilarity threshold 0.75). Ehull: energy above hull per atom [eV].

Synthesis Descriptions

10.1007/s11661-011-0623-1
The material used was annealed Ti-55.91wtpct Ni foil in the form of 50500.25mm. It was cut into pieces of 10100.25mm, and the surfaces were ground clean using 600 grit SiC papers. Bead [...]
10.1007/s11661-014-2280-7
Before laser welding, the NiTi wire was cleaned with a 15 vol pct HF, 45 vol pct HNO3, and bal. H2O mixture, to remove the thick oxide layer. This is required for successful welds and led to a final a [...]
chef hat mixing beaker

Explore more synthesis descriptions for materials of composition TiNi.

Text computed by synthesisproject.org.

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA
Energy Cutoff
520 eV
# of K-points
None
U Values
--
Pseudopotentials
VASP PAW: Ti_pv Ni_pv
Final Energy/Atom
-7.2346 eV
Corrected Energy
-28.9383 eV
-28.9383 eV = -28.9383 eV (uncorrected energy)

Detailed input parameters and outputs for all calculations

Show JSON History Show BibTex Citation Download BibTex Citation
ICSD IDs
  • 245081
  • 166367
  • 105415
  • 164155
  • 646942
  • 181724
  • 164151
  • 105416
  • 161458
  • 187470
  • 105414
  • 164153
  • 166012
  • 187468
  • 166372
  • 157607
  • 164156
  • 164154
  • 164152
  • 240195
  • 157983
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User remarks:
  • Nickel titanium (1/1) - martensite

Displaying lattice parameters for primitive cell; note that calculated cell volumes are typically overestimated on average by 3% (+/- 6%). Note the primitive cell may appear less symmetric than the conventional cell representation (see "Structure Type" selector below the 3d structure)