Crystal structure of CuFe2InSe4 from X-ray powder diffraction

Crystal structure characterization of the quaternary compounds CuFeAlSe3 and CuFeGaSe3

“…Figure 2 show the unit cell diagram for both Cu-Fe-III-Se 3 compounds compared to the chalcopyrite Cu-III-Se 2 parents, and Table 4 show a comparison between the unit cell parameters and the bond distances for the three phases of both families of compounds. In CuFeAlSe 3 , the tetrahedra containing the Al atoms [mean Se…Se distance 3.85 (1) [7]. The Al-Se and Ga-Se bond distances are also in good agreement with similar distances in the adamantane compounds CdAl 2 Se 4 (2.987 Å) [24] and CdGa 2 Se 4 (2.414 Å) [25].…”

“…They crystallize with tetragonal symmetry in the space group I42d (N°122), and the addition of a Fe-Se binary compound produces alloys of the type (Cu-III-Se 2 ) 1-x (Fe-Se) x [2]. Recently, the formation of some member with compositions CuFe-III-S 3 (x = 1/2), Cu-Fe 2 -III-Se 4 (x =2/3) and Cu 2 -Fe-III-Se 5 (x = 1/3) have been reported [3][4][5][6][7]. All these phases fulfill the rules of formation of adamantane compounds [2] and belong to the normal semiconductor compound families of the third, fourth and fifth-order derivatives of the II-VI binary semiconductors, respectively [8].…”

Synthesis and Crystal Structure of Three New Quaternary Compounds in the system Cu-Mn-III-Se3 (III = Al, Ga, In)

“…These materials crystallize with tetragonal symmetry in the space group I4 2d (N°122), and the addition of a Fe-Se binary compound produces alloys of the type (Cu-IIISe 2 ) 1-x (FeSe) x 2 . Some previous results on the formation, structural characterization, thermal and magnetic properties on these alloys with compositions Cu-Fe-III-Se 3 (x = ½), Cu-Fe 2 -III-Se 4 (x = ⅔) and Cu 2 -Fe-III-Se 5 (x = ⅓) have been reported [3][4][5][6][7][8][9][10][11][12][13][14][15] . All these phases fulfill the rules of formation of adamantane compounds 2 and belong to the normal semiconductor compound families of the third, fourth and fifth-order derivatives of the II-VI binary semiconductors, respectively 16 .…”

Structural Characterization of Two New Quaternary Chalcogenides: CuCo2InTe4 and CuNi2InTe4

“…Structural studies carried out on some members of this family indicate that they crystallize in a sphalerite derivative structure (stannite) with tetragonal space group I 4 2m (No. 121) 11 , or in a wurtzite derivative structure (wurtzite- In recent years, it has been of interest to carry out a systematic study of the crystal structure of quaternary diamond-like families [13][14][15][16][23][24][25][26] . Hence, in this work we report the X-ray powder diffraction analysis and crystal structure of the quaternary compounds CuCo 2 InTe 4 and CuNi 2 InTe 4 , two new members of the I-II 2 -III-VI 4 family, which crystallize with a stannite structure.…”