The influence of thermal annealings on La(0.9)Ca(0.1)MnO(3) (LCMO) films in oxygen and in vacuum with low hole doping is investigated in the phase separation region where competition between AFM and FM phases is high. Measurements by x-ray diffractometry, atomic force microscopy and magnetometry reveal changes in the lattice parameters and magnetic properties of the films, depending on the oxyg...

Techniques of film deposition by co-evaporation, ion-beam assisted mixing, oxygen ion implantation, and thermal annealingwere been combined in a novel way to study processing of erbium-in-silicon thinfilm materials for optoelectronics applications. Structures with erbium concentrations above atomic solubility in silicon and below that of silicide compoundswere prepared by vacuum co-evaporation ...

Molecular dynamics simulations and simulated annealing in vacuum, model aqueous solution, and simulated membrane were used to analyze the conformational preferences of a segment spanning 20–29 residues of human islet amyloid polypeptide, [referred to as IAPP(20–29)] . Molecular dynamics simulations were conducted at 300 K on IAPP(20– 29). The minimum energy conformers obtained in model aqueous ...

In this letter, we present a sapphire direct bonding method using plasma surface activation, hydrophilic pre-bonding, and high temperature annealing. Through the combination of sapphire inductively coupled plasma etching and the direct bonding process, a vacuum-sealed cavity employable for high temperature applications is achieved. Cross-sectional scanning electron microscopy (SEM) research of ...

objective: the main objective pursued in this paper is to investigate the energy consumption for drying of potato slices using vacuum-infrared drying method. methods: drying of potato slices with the thicknesses of 1, 2 and 3 mm were conducted at vacuum levels of zero (without vacuum), 20, 80 and 140 mm [hg], infrared radiation at power levels of 100, 150 and 200 w in the three repetition. resu...

In this study, the ambient condition for the as-coated seed layer (SL) annealing at 350 °C is varied from air or nitrogen to vacuum to examine the evolution of structural and optical properties of ZnO nanorods (NRs). The NR crystals of high surface density (~240 rods/μm²) and aspect ratio (~20.3) show greatly enhanced (002) degree of orientation and crystalline quality, when grown on the SLs an...

Gd flake samples were prepared by conventional ball milling technique starting from rapidly quenched ribbons and followed vacuum annealing in different conditions. Heat treatments conducted a at selected temperatures up to 600 K. The structural features, magnetic magnetocaloric properties comparatively analyzed. change entropy was calculated using an experimental set of isotherms measured wide ...