Magnetodielectric effect in composites of nanodimensional glass and CuO nanoparticles

Nanocomposites comprising CuO particles of average diameter 21 nm coated with 5 nm silica glass containing iron ions were synthesized by a chemical route. An ion exchange reaction at the nanoglass/CuO interface produced iron-doped CuO with copper ion vacancies within the nanoparticles. Room temperature ferromagnetic-like behavior was observed in the nanocomposites. This was ascribed to uncompensated spins contributed by Fe ions with associated copper ion vacancies. A rather high value of magnetodielectric parameter in the range 16–26% depending on the measuring frequency was exhibited by these nanocomposites at a magnetic field of 10 KOe. This was caused by a magnetoresistance of 33% in the iron doped CuO nanoparticles. The experimental results were fitted to the Maxwell–Wagner Capacitor model developed by Catalan. These materials will be suited for magnetic sensor applications.     

Space–time inhomogeneity, anisotropy and gravitational collapse

We investigate the evolution of non-adiabatic collapse of a shear-free spherically symmetric stellar configuration with anisotropic stresses accompanied with radial heat flux. The collapse begins from a curvature singularity with infinite mass and size on an inhomogeneous space–time background. The collapse is found to proceed without formation of an even horizon to singularity when the collapsing configuration radiates all its mass energy. The impact of inhomogeneity on various parameters of the collapsing stellar configuration is examined in some specific space–time backgrounds.     

Quantum walk search by Grover search on coin space

The European Physical Journal D - Partial ionization cross section (PICS) measurements of the cations created through electron impact in the energy range from threshold ionization to...     

Simultaneous high-performance thin-layer chromatographic method for the estimation of guggulsterones E and Z in AYUSH guggul formulations and confirmation of the antioxidant potential of guggul by thin-layer chromatographic‒bioautographic method

JPC – Journal of Planar Chromatography – Modern TLC - Guggulsterone (GS) is a bioactive phytosteroid found in the oleo-gum resin of guggul (Commiphora wightii). In Indian system of...     

ChemInform Abstract: Reactivity,Selectivity, and Aromaticity of Be32‐ and Its Complexes

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