A concise and factual abstract is required. The abstract should state briefly the purpose of the research, the principal results and major conclusions. An abstract is often presented separately from the article, so it must be able to stand alone. For this reason, References should be avoided, but if essential, then cite the author(s) and year(s). Also, non-standard or uncommon abbreviations should be avoided, but if essential they must be defined at their first mention in the abstract itself.

Physica. B, Condensed matter

Metallic nanoparticles are finding new applications in medical, pharmaceutical, food and agriculture sectors. Applications include drug delivery, targeted cancer remedies, biomarker mapping, gene delivery and molecular imaging. This article reviews green strategies for the preparation of metallic nanoparticles, using enzymes, vitamins, monosaccharides, polysaccharides and biodegradable polymers. Microwave-assisted synthesis is detailed. Then, we review nanoparticle characterization using UV–visible spectroscopy and Fourier transform infrared spectroscopy. We also present applications for water purification.

Metallic nanoparticles: green synthesis and spectroscopic characterization

Synthesis of MFe 2 O 4 (M=Mg 2+ , Zn 2+ , Mn 2+ ) spinel ferrites and their structural, elastic and electron magnetic resonance properties

Enzyme mimetic activities of spinel substituted nanoferrites (MFe2O4): A review of synthesis, mechanism and potential applications.

Materials science & engineering. B, Solid-state materials for advanced technology

Two powder samples of manganese ferrite (MnFe2O4) with different morphology and particle size 30–40 nm, denoted by A and B have been synthesized by different methods starting from MnCl2·4H2O and FeCl3·6H2O. Sample A was obtained by co-precipitation followed by calcination at 900 °C and sample B has been obtained by hydrothermal method. XRD analysis show that calcination leads to the occurrence of other phases than MnFe2O4, therefore the hydrothermal method gives better results. From the temperature dependence of the electrical resistivity, measured over the range 300–483 K, the activation energy, Δ E , of the investigated samples has been evaluated, resulting in 0.43 eV (for sample A) and 0.32 eV (for sample B). The conductivity mechanism in the samples was explained in terms of Mott's variable range hopping (VRH) model. The results showed that the density of states at the Fermi level is constant over the investigated temperature range, being in order of 0.788 × 10 17 eV − 1 cm − 3 (for sample A) and 2.05 × 10 17 eV − 1 cm − 3 (for sample B). The hopping distance, R and the hopping energy, W (parameters of VRH model) have also been computed. Room temperature values are R=27.08 nm and W=152 meV for sample A and R=21.29 nm and W=120 meV for sample B.

The electrical properties of manganese ferrite powders prepared by two different methods

Experimental investigations of the structural transformations induced by the heat treatment in manganese ferrite synthesized by ultrasonic assisted co-precipitation method

Antoanetta Lungu

Papers

The electrical properties of manganese ferrite powders prepared by two different methods

Experimental investigations of the structural transformations induced by the heat treatment in manganese ferrite synthesized by ultrasonic assisted co-precipitation method

Electrical conductivity of Ca-substituted lanthanum manganites

Perovskite type lanthanum manganite: Morpho-structural analysis and electrical investigations

Temperature dependence of the dynamic electrical properties of Cu1+xMn1-xO2 (x = 0 and 0.06) crednerite materials