Correlating defect induced ferromagnetism and gas sensing properties of undoped tin oxide sensors

Abstract

Influence of oxygen level on structure and ferromagnetism in Sn 0.95 Fe 0.05 O 2 nanoparticles

Molten Salt Synthesis of Persistent Luminescent/Magnetic Cr3+-Doped Zinc Gallogermanate Particles

“…This is also in agreement with a previous report where the lattice expands in oxide particles . The increase in the lattice parameter with a decreasing particle size may result from the oxygen vacancy associated with particles. , Actually, the room-temperature ferromagnetism has been observed previously in nonmagnetic metal oxide particles such as CeO 2 , Al 2 O 3 , ZnO, In 2 O 3 , SnO 2 , etc., − originating from the oxygen vacancies on the particle surface due to exchange interactions among localized electron spin moments, and the electrons trapped in oxygen vacancies ( F center) are polarized to give room-temperature ferromagnetism . The oxygen defects of ZGGO particles obtained in NaCl can be determined from the XPS spectra for the O 1s signal (Figure S15).…”

Influence of Ti addition on the room temperature ferromagnetism of tin oxide (SnO2) nanocrystal

“…Even now, the room temperature ferromagnetic property has been experimentally observed in many oxide based DMSs [3][4][5][6][7]. Tin dioxide is a wide band gap semiconductor with many applications like optoelectronic devices, sensor, catalyst, solar cell [8][9][10][11][12]. Like ZnO, TiO 2 and Fe 3 O 4 , tin oxide is one of the most studied oxides.…”

Correlating the magnetism and gas sensing properties of Mn-doped ZnO films enhanced by UV irradiation

“…However, both the gas sensing mechanism and the magnetization depend primarily on defects. It is well known that oxygen vacancies (V O ) play a vital role in the gas sensing mechanism, 25,26 and similarly, it is also understood that the presence of V O may lead to RTFM in MOS. Currently; there are only a few reports on the correlation between magnetism and sensing.…”