Investigations of optoelectronic properties in DMS SnO2 nanoparticles

Effect of Mn doping on structural, optical and magnetic properties of SnO2 nanoparticles

“…Unpaired electrons can be trapped in those oxygen vacancies and their spins can polarize together via exchange interactions and lead to ferromagnetic order in SnO 2 nanoparticles [35]. As the strength of externally applied magnetic field is increased the magnetic susceptibility continuously increases for Mn doped SnO 2 [32,[35][36][37][38][39][40][41][42]. The graphs illustrates that as the Mn dopants concentration increases the particles becomes more aligned in the direction of applied magnetic field as the net magnetic moment increases after Mn doping.…”

“…The coercivity and positive susceptibility may be associated with the exchange coupling of the spins of electrons trapped in oxygen vacancies (V o ), which are mainly present on the surface of the SnO 2 nanoparticles and the surface defects created during synthesis process as evident from PL spectra also. The literature reveals that these oxygen vacancies basically located on the particle surface are considered to play a key role for the paramagnetism and ferromagnetism in nanosized SnO 2 [35][36][37][38][39][40][41]. Unpaired electrons can be trapped in those oxygen vacancies and their spins can polarize together via exchange interactions and lead to ferromagnetic order in SnO 2 nanoparticles [35].…”

Incubation and aging effect on cassiterite type tetragonal rutile SnO2 nanocrystals

“…For example, Agrahari et al [19] investigated optoelectronic properties of SnO 2 nanoparticles. Glot et al [20] explored electrical properties of SnO 2 ceramics for low voltage varistors.…”

“…In general, the preparation of SnO 2 nanostructure involves minimum neither two precursors nor high temperature, high cost and template assisted synthesis [19][20][21][22][23][24][25][26][27][28]. In recent years, mild and sustainable biosynthesis of nanostructures using green protocols has been studied extensively.…”

Effect of Fe doping on magnetoresistance and exchange coupling of Fe-doped ITO films

“…Dilute magnetic oxides (DMOs) have received great attention for their potential applications in combining semiconducting and ferromagnetic properties in a single material [1][2][3]. Since Dietl et al predicted that room-temperature (RT) ferromagnetism may be realized in Mn-doped ZnO, many promising DMO systems like TiO 2 [2,4,5], ZnO [6][7][8][9][10], SnO 2 [11,12], CuO [13] and ITO [14,15] doped with a variety of 3d transition metal (TM) ions have been reported to exhibit ferromagnetic behavior with Curie temperature near or above 300 K. Among these hosts, ITO-based DMOs have attracted considerable interest due to their high optical transparency, excellent electrical conductivity and high solubility of TM doped ions, which make it a promising candidate as a host matrix for developing DMOs.…”