Abstract
Novel one-dimensional nanohybrids made of Fe@CaS nanopeapods homogeneously coated with protecting nitride sheaths are synthesized through a solid-liquid-solid reaction at similar to 1500 degrees C. Within the nanopeapods, discrete Fe nanoparticles with an average size of similar to 90 nm are periodically embedded in CaS nanowires along the growth axes. The structures have diameters of 150-180 nm and lengths in the range of tells of micrometers, Detailed electron microscopy studies reveal a unique stacking sequence of nanopeapods and the protecting tubular BN sheaths oil them with a uniform thickness of similar to 3 nm. Magnetic measurements show that nanopeapods are ferromagnets at room temperature with,I coercive force of 64 Oe. These novel nanostructures may not only enrich the existing bank of hybrid nanosystems but may also have high expectations for magnetic-optical and spintronic devices.