Review ArticleOpen accessIn the keywordsPermanent Magnetic FluidsNicolae Petrescu, Florian Ion Tiberiu PetrescuA team of researchers at the University of Massachusetts Amherst has accidentally obtained the first magnetized permanent liquid in the world, the droplets of this liquid moving in unison and able to associate in different forms while being manipulated exterior by means of a magnet, according to a new study published in the latest issue of the journal Science, reports … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 3 · 22 Aug 2019 · 8,842 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPositron Annihilation Study on Nickel and Iron Nano-Particles in Natural Rubber CompositesEmad Hassan AlyProblem statement: The effect of Ni and Fe nano-particles as a filler on the free volume properties Of Natural Rubber (NR) was studied using Positron Annihilation Lifetime Spectroscopy (PALS). Approach: The PAL measurements revealed that the free volume properties are strongly affected by the amount and type of filler. Results: Particularly speaking, the free volume fraction dramatically decreased by increasing … …American Journal of Applied Sciences, Vol. 8, Issue 2 · 28 Feb 2011 · 7,625 accessesView PDFCite
Research ArticleOpen accessIn the abstractHigh Deposition Rate of Dual-cathode DC Unbalanced Magnetron SputteringTheeranon Chaiyakun, Wuttichai Phae-Ngam, Jedsada PrathumsitDual-cathode dc unbalanced magnetron sputtering for the deposition of ternary compound films with a high deposition rate was designed and constructed. It consists of two magnetrons of opposite magnetic polarities. Each magnetron consists of central and outer ring magnets with the residual inductions of 500 and 600 mT, respectively. The testing results of the system showed that high plasma volume … …American Journal of Applied Sciences, Vol. 17, Issue 1 · 14 Oct 2020 · 7,205 accessesView PDFCite
Research ArticleOpen accessIn the abstractFactors Affecting the Synthesis and Formation of Single-Phase Barium Hexaferrite by a Technique of Oxalate PrecursorQ. MohsenProblem statement: Barium hexaferrite (BaFe12O19), is of great importance as permanent magnets, particularly for magnetic recording as well as in microwave devices. Approach: The aim of this study was to synthesize Stoichiometric and single-phase barium hexaferrite through a technique of oxalate precursor. Effects of different Fe3+/Ba2+ mole ratio and annealing temperature on the particle size, microstructure and magnetic properties of … …American Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 7,922 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis and Characterization of Hot-Roll and Cold-Roll Byproduct-Derived Strontium Hard FerritesH. S. Woon, K. P. Lim, N. Puteri et al.Problem statement: Ceramic permanent magnets or more commonly known as strontium hexagonal ferrites have been widely used in permanent magnetic materials as they provide high remanence, high coercivity, relatively high energy product and good chemical stability. In this study, we treated factory byproduct from hot-roll and cold-roll steel industry was used as raw material in synthesis of strontium hexagonal hard … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,310 accessesView PDFCite