The magnetic and transport properties of Co80Fe20t /Al2O34 nm multilayers with low nominal thicknesses t=0.7 and 0.9 nm of Co80Fe20 granular layers are studied. Magnetic studies find a superparamagnetic state above the blocking temperature Tb of field-cooled/zero-field-cooled splitting that grows with t and decreases with H. The low-voltage Ohmic tunnel transport passes to non-Ohmic IV3/2 law for applied fields...
Planar capacitor structures based on granular films composed of nanometric ferromagnetic grains embedded in an insulating Al2O3 matrix can switch between a high-conductance and a low-conductance state. The switching properties are induced by a forming process. The ON/OFF resistance ratio is as high as 104 under an electrical field of only 15 kV/m. This resistive switching is accompanied by a capacitive switchin...
http://www.sciencedirect.com/science/article/B6TXM-4TRM3MB-3/2/a3801608d0695335d1eccf6692a4287d
Projecto Agro nº 58 - Recursos genéticos de Cucurbitáceas - Abóboras e Melancias ; A cultura da abóbora tem importância significativa na dieta alimentar portuguesa, tendo o seu consumo tendência para aumentar, continuando a ter procura as espécies normalmente cultivadas entre nós, nomeadamente a abóbora menina (Cucurbita maxima Duch. Ex Lam), registando-se uma tendência cada vez maior para a valorização das po...
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