Electronic Band Structure of Cadmium Chromium Chalcogenide Spinels: CdCr2S4 and CdCr2Se4

Electronic band structure and exchange coupling constants inACr2X4spinels (A=Zn

“…It should be noted, however, that a tight binding analysis of the band structure of CdCr 2 S 4 performed in Ref. 40 showed that the direct hopping between Cr d states is not negligible even in sulfides and selenides. The contribution of the indirect hopping via X p states to the effective d-d hoppings, which is proportional to t 2 pd /(ε d − ε p ), does not change much because i) S 3p and Se 4p states are significantly more spatially extended than O 2p states and, although d Cr-X also increases in ACr 2 S(e) 4 , Cr d-X p hoppings t pd remain approximately of the same strength as in ACr 2 O 4 ; ii) the energy difference ε d − ε p in sulfides and selenides is smaller than in oxides.…”

Crystal structure and magnetic property correlation in Cd1−xMxCrBehera1, Bhobe2 2015Journal of Magnetism and Magnetic Materials13120View full textAdd to dashboardCite

“…This material displays co-existence of long-range ferromagnetic ordering (with a T C 129.5 K) [19,20] and n-type semiconductivity [21,22]. Slight imbalance in the stoichiometry can lead to change in conductivity from n-type to p-type [23].…”

The effects of doping ferromagnetic spinel CdCr2Se4 with Sb3+ ions

“…CdCr 2 Se 4 belongs to the group of chalcogenide spinels that exhibit coexistence of long-range magnetic ordering and semiconductivity [1][2][3][4][5][6][7]. The magnetic behavior of this compound was first studied nearly 50 years ago, and already those investigations revealed its ferromagnetic nature below T C E130 K [1,3].…”