Effect of ultrasonication on particle size and magnetic properties of polyaniline NiCoFe2O4 nanocomposites

Ultrasound-assisted electrodeposition of SnS: Effect of ultrasound waves on the physical properties of nanostructured SnS thin films

“…The reasons for this observation are: (i) the creation of more mismatching in the UAED-SnS lattice compared to the ED-SnS lattice due to the presence of ultrasonic waves, (ii) the formation of more thin planes (2D crystals) with applying ultrasonic waves which decrease crystallinity (Fig. 3c,d), (iii) smaller particle size for UAED-SnS based on XRD calculations due to ultrasonication (it is in agreement with [24]), and (iv) the presence of hot spots generated during the collapse of cavitation [25,26]. The lattice parameters of SnS thin films with orthorhombic structure were calculated by the following formula [27], using the value of (hkl) indexes for the (040), (021), and (111) planes and the d hkl (inter-planar spacing) values:…”

Structural, magnetic and dielectric properties of polyaniline/MnCoFe2O4 nanocomposites

“…Significant improvement was achieved when ultrasonic treatment introduced in the synthesis of nanocomposites. On ultrasonication the particle size thermal stability of the PANI/NiCoFe 2 O 4 nanocomposites were decreased when compared without ultrasonication [23].…”

“…The TGA was performed under nitrogen atmosphere at 10 o C/min from room temperature to 800 o C. PANI shows three step weight loss behaviour which was reported [23,32]. Initial weight loss around 100 o C, may be due to the occluded moisture in the PANI and PANI nanocomposites.…”

“…The mixture on ignition in air at room temperature, the dried gel burnt in a self propagating combustion, giving rise to the evolution of a large amount of gases and producing a dry and loose ferrite powder.2.3. Synthesis of PANI/MnCoFe 2 O 4 nanocompositesPANI/MnCoFe 2 O 4 nanocomposites with and without ultrasonication were synthesized by adopting the previously described method[23,24]. A mixture containing 1.35ml aniline in 70ml of 2M HCl and 0.3g of MnCoFe 2 O 4 nanoparticles was subjected to mechanical stirring for 2 hours.…”

Optimization of multiroute synthesis for polyaniline-barium ferrite composites

“…However, there is a marked decrease of coercivity field compared to that of barium hexaferrite which is well observed for ABPNS composites (a decrease of 30%). These changes of Ms and Hc values are mainly associated to uneven distribution, content of BaFe 12 O 19 in the sample and the synthesis medium [59,60].…”