Cation distribution and size-strain microstructure analysis in ultrafine Zn-Mn ferrites obtained from acetylacetonato complexes

Article Abstract:

The ultrafine ZnFe2O4, MnFe2O4, and cation deficit Zn-Mn ferrites were obtained by thermal decomposition of appropriate mixed complex compounds with acetylacetone ligands at 500 degree centigrade. Microscopic size strain analysis shows isotropic X-ray line broadening due to the crystalline strain effect, which is higher in ZnFe2O4 than in MnFe2O4 while in ternary cation-deficient Zn-Mn ferrites it decreases as the vacancy concentration increases.

Iron compounds, Zinc compounds

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Influence of Mn-O-Mn bond on the magnetic and electronic properties in YBaMn(sub 2)O(sub 5)

Article Abstract:

The influence of Mn-O-Mn bond angle on the magnetic and electronic properties of YBaMn(sub 2)O(sub 5) were studied by using density functional theory (DFT). The calculated results showed that the G-type antiferromagnetic (AFM) state is more stable than the A-type and the reduction of Mn-O-Mn bond angle is essential to stabilize G-type AFM.

Electric properties, Density functionals, Density functional theory, Antiferromagnetism, Magnetic properties

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Synthesis, photoluminescence, and adsorption of CdS/dendrimer nanocomposites

Article Abstract:

A study on the effects of various additives on the photoluminescence is done and elucidated its mechanism. It proposed to use only one molecule, a large dendrimer, to control the nanoparticle formation and also the immobilization of the synthesized nanoparticl/dendrimer composites.

Cadmium Compounds, Optical properties, Photoluminescence, Dendrimers

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