Ni–bacterial cellulose nanocomposite; a magnetically active inorganic–organic hybrid gel

Ethanol-assisted synthesis and adsorption property of flake-like NiFe2O4 nanoparticles

“…Actually, the ethanol addition increases the volume anisotropy and interparticle interaction of nanoparticles, which leads to a higher blocking temperature T B of the as-synthesized NiFe 2 O 4 ferrites [22]. Additionally, it is worthy to note that, due to the occurrence of some extremely small particles, the ZFC curves of all the samples show a sharp peak at 7.2-12K, which is in perfect accordance with the results in the previous reports [23,24]. In addition, for FC curves of all the four samples, an approximate temperature-independent part at above 20 K can be observed.…”

Flexible bacterial cellulose / permalloy nanocomposite xerogel sheets – Size scalable magnetic actuator-cum-electrical conductor

“…16,17 The synthesis method consists of two essential steps -(i) preparation of cellulose synthesizing inoculum, and (ii) growth of cellulose using the inoculum in a static culture containing nutrients for the bacteria. The bacterial inoculum was harvested from wild culture made of orange peel fibres and sugar solution.…”

Microstructure and magnetic properties of MFe2O4 (M = Co, Ni, and Mn) ferrite nanocrystals prepared using colloid mill and hydrothermal method

“…Then, the presence of extremely small particles leads to a sharp low temperature peak T B1 in the spectra of ZFC curve, which is in perfect accordance with the results reported by Thiruvengadam and Vitta. 25 Additionally, the FC curve does not intersect the ZFC curve at 300 K, explaining the ferromagnetic behavior of the as-synthesized NiFe 2 O 4 nanoparticles at room temperature. For MnFe 2 O 4 nanoparticles, an obvious blocking temperature (160 K) is observed, which confirms that these particles are in a superparamagnetic state at room temperature.…”