Ti4Ni2Ga3
hP18
(189) P-62m – ihgfba
Ti8Ni4Ga6 [1]
Structural features: Infinite columns of base-linked NiTi6 trigonal prisms share edges to form a 3Dframework; single columns of base-linked TiGa6 trigonal prisms in channels parallel to [001].
Substitution derivative of Fe2P (or its branch Mg2In), [Ti3Ga3][Ni2Ti], with distortions towards the
formation of Ni2 dumbbells.
Markiv V.Y. et al. (1983) [1]
Ga3Ni2Ti4
a = 0.699, c = 0.624 nm, c/a = 0.893, V = 0.2640 nm3, Z = 2
site
Wyck. sym.
x
y
z
occ.
atomic environment
__________________________________________________________________________________________________________________________________________________________________________
Ga1
Ni2
Ti3
Ti4
Ti5
Ti6
6i
4h
3g
3f
1b
1a
..m
3..
m2m
m2m
-62m
-62m
0.273
/3
0.586
0.633
0
0
1
0
/3
0
0
0
0
2
0.253
0.2
1
/2
0
1
/2
0
14-vertex Frank-Kasper Ti8Ni2Ga4
10-vertex polyhedron NiTi6Ga3
13-vertex polyhedron Ga6Ni4Ti3
13-vertex polyhedron Ni4Ti3Ga6
pseudo Frank-Kasper Ga6Ti5
pseudo Frank-Kasper Ga6Ti5
__________________________________________________________________________________________________________________________________________________________________________
Experimental: powder, diffractometer, X-rays, R = 0.098
Remarks: Phase referred to as ε-(GaNiTi); homogeneity range Ti1+xNi0.66Ga1-y, 0.34 < x < 0.50, 0 < y <
0.16.
References: [1] Markiv V.Y., Belyavina N.N., Lysenko A.A., Babenko A.A. (1983), Dopov. Akad. Nauk
Ukr. RSR, Ser. B 1983(1), 34-37.
Landolt-Börnstein
New Series III/43A4