Novel magnetic and optical properties of Sn1−xZnxO2 nanoparticles

Abstract

Abstract

Defect ferromagnetism in SnO2:Zn2+ hierarchical nanostructures: correlation between structural, electronic and magnetic properties

“…In particular, we identify that for the more strongly ferromagnetic compositions the nanoparticles have regular shaped structures with nanoneedles on their surfaces where the (110) and (101) planes are present. This is particularly signicant in the sense that calculations 21 have shown that ferromagnetic defects (V Sn ) are energetically favoured on these surfaces. Hence there appears to be a correlation between the morphological structure and ferromagnetic behaviour via the anisotropic growth of nanostructures with surfaces that stabilize ferromagnetic defects.…”

“…Fig. 6(c) displays the Zn 2p core level region where the Zn 2p 3/2 peak appears at a binding energy of 1021.1 eV, 21,46 con-rming that Zn atoms were incorporated into the Sn lattice and form Zn-O bonds. We analysed at least three different spots on every sample and found that the Zn concentration did not vary between different spots, which indicates that the Zn concentration in these samples is homogeneously distributed.…”

“…20 The role of divalent zinc as a substituent for Sn 4+ is particularly interesting due to the closeness in their respective ionic sizes on the one hand and the difference between their respective valences, on the other. Doping of SnO 2 with Zn has been shown to induce magnetism in nanoscale systems, 6,21 while computational studies performed on the bulk SnO 2 system with Zn doping relate this magnetism to the native defect of tin vacancies. 22,23 The other prevalent defects in this system, namely oxygen vacancies (V O ) are known to weaken FM.…”

CdS/ZnSnO3 Hollow Core–Shell Nanocubes for Photocatalytic Hydrogen Evolution and Degradation of Ciprofloxacin

“…Elemental doping has been reported as an effective strategy for ameliorating the semiconductor photocatalysts; , besides its easy preparation for adjusting the optical band gap structure, it can also generate more active sites via the lattice optimization, including S-doping, P-doping, or N-doping, etc. Zhang et al constructed a new type of P-doped MoS 2 /g-C 3 N 4 composite to effectively enhance the catalytic activity .…”

Zn dopant effect on growth, morphology, texture and mechanical properties of SnO2 thin films

“…Doped tin oxide is used for solar cells [1], gas sensor [2], photo catalysis [3], pollutants detection [4], anode for ion lithium batteries [5] as quantum dots [6,7], ferromagnetic [8] and photoconductive devices. Nowadays, Zn doped SnO2 show promising applications for high temperature semiconductor [9] and optoelectronics devices [10], both properties are being improved by tuning the amount and type of dopants. In solar energy research, Zn doped SnO2 nanoparticles (NPs) are being used as photo anode material to induce negative shift in the flat-band potential to increase the isoelectric point in dye-sensitized solar cell [11].…”