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Examines the structure and magnetic properties of nanostructured PrCo[sub 7-x]Ti[subx] of Pr(Co,Ti)[sub7] phase alloy. Administration of mechanical milling and subsequent annealing; Coercivity of the material; Influence of the high uniaxial anisotropy field of the Pr(Co,Ti)[sub 7] phase.

Abstract: Formation mechanism of a remarkable type of pseudoperiodical multi-twinning nanostructures has been investigated by using ZnSe nanowires as a model system. Transmission electron microscopy observations indicate that the nanowires are guided by a catalyst particle, and alternating twins with {111} twin boundary are extended. The crystalline orientations of the catalyst particle prefer to take the same as that of nanowire. The misfit dislocations in the interface are observed for the first time. They are used to release the large mismatch between catalyst and nanowire. The remaining mismatch energy is released by forming twin boundary. The strain energy is cumulated and released periodically, so the pseudoperiodical multi-twinning nanostructures are formed. [Copyright &y& Elsevier]

Abstract: Using seed-mediated and photochemical reduction approach in the presence of poly(vinyl pyrrolidone) (PVP), polycrystalline Ag nanowires with diameters of 35–120nm and lengths up to ∼50μm and elegant silver dendrites were prepared at room temperature. Additionally, PVP/silver nanocables were synthesized at the same time. It was found that experimental conditions including the molar ratio of PVP to AgNO3, the volumes of silver seeds, and the reaction time all play influential roles in the formation of silver nanostructures. The mechanism of formation of those silver nanostructures was also discussed in detail. [Copyright &y& Elsevier]

Carbon nanostructures filled with Fe were synthesized. It was found that both the shape and the phase of the carbon nanocapsulate may be controlled during the growth, and controlled ferrous amorphous–crystalline phase transformation may be realized via electron beam irradiation. Since an electron beam may be focused into a nanoscale probe, this method may in principle be used for fabricating amorphous–crystalline heterostructures inside carbon nanotubes. [Copyright &y& Elsevier]