Crystal structure characterization of the quaternary compounds CuFeAlSe₃ and CuFeGaSe₃

Abstract

The crystal structure of the chalcogenide compounds CuFeAlSe 3 and CuFeGaSe 3 , belonging to the system I-II-III-III 3 , were characterized using X-ray powder diffraction data. Both compounds crystallize in the tetragonal space group P42c (Nº 112), Z = 1, with unit cell parameters a = 5.609(1) Å, c = 10.963(2) Å for CuFeAlSe 3 and a = 5.6165(3) Å, c = 11.075(1) Å for CuFeGaSe 3 . These compounds are isostructural with CuFeInSe 3 , and have a normal adamantane structure.

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.…”

Preparation, differential thermal analysis and crystal structure of the new quaternary compound CuVInSe3

“…The interatomic distances are shorter than the sum of the respective ionic radii for structures tetrahedrally bonded [26]. [27], CuFe(Al,Ga,In)Se 3 [8,13], CuFe 2 (Al,Ga,In)Se 4 [12,16], CuNi(Ga,In)Se 3 [14], and Cu 3 VSe 4 [28].…”

“…These types of materials have received considerable attention mainly because they can be useful for their potential applications in the fabrication of low cost solar cells and their large magneto-optical effects, which are observed when II are paramagnetic atoms [10,11]. We are currently investigating the synthesis and structural characterization of chalcogenide diamond-like families [12][13][14][15][16], and as part of ongoing studies, in this work we report the synthesis and a crystallographic characterization of the new chalcogenide quaternary compound CuVInSe 3 , which belong to the system (Cu-In-Se 2 ) 1−x (VSe) x where x = 1/2. The structural study was carried out by Rietveld refinement using X-ray powder diffraction data.…”