Simple synthesis of MgFe2O4 nanoparticles as gas sensing materials

Synthesis of metal ferrite (MFe2O4, M = Co, Cu, Mg, Ni, Zn) nanoparticles as humidity sensor materials

“…The synthesised metal ferrite nanoparticles were explored for their humidity-sensing property. The compounds were prepared by solid-state reaction of inorganic precursors [13][14][15]. In a typical synthesis, analytical grade metal acetate (M ¼ Co, Cu, Ni and Zn) or metal sulphate (M ¼ Mg), Fe(NO 3 ) 3 �9H 2 O, NaOH and NaCl were mixed in a molar ratio (1:2:8:2) and ground together in an agate mortar for about 30 min.…”

A comparative study of structural, electrical and magnetic properties of magnesium ferrite nanoparticles synthesised by sol-gel and co-precipitation techniques

“…Magnesium ferrite is a typical spinel in which the cation distribution in the crystal lattice site is sensitive to heat treatment due to high diffusibility of Mg 2þ ions [6,7]. Magnesium ferrites are used as humidity sensors [8], catalysts [9] and also in magnetic and gas sensing applications [10,11]. When its crystallite size is below a certain value, MgFe 2 O 4 possesses unique superparamagnetic properties at room temperature and has promising potential for applications in transformers, ferrofluids and magnet cores of coils [12,13].…”

Nanocrystalline Nickel Zinc Ferrite as an efficient alcohol sensor at room temperature

“…Some crystalline properties of NZF are shown in Table 1. The low measured density and porosity >50%, satisfying the requirements for materials used as organic vapour sensors [22]. Fig.2 presents the FESEM micrographs for the ferrite sample which reveals that the sample has nanosized grains with open porosity.…”