Wet chemical synthesis and magnetic properties of single crystal Co nanochains with surface amorphous passivation Co layers

• Main Authors: Zhou Shao-Min, Lou Shi-Yun, Wang Yong-Qiang, Chen Xi-Liang, Liu Li-Sheng, Yuan Hong-Lei
• Format: Article
• Language: English
• Published: SpringerOpen 2011-01-01
• Series: Nanoscale Research Letters
• Online Access: http://www.nanoscalereslett.com/content/6/1/285

<p>Abstract</p> <p/> <p>In this study, for the first time, high-yield chain-like one-dimensional (1D) Co nanostructures without any impurity have been produced by means of a solution dispersion approach under permanent-magnet. Size, morphology, component, and structure of the as-made samples have been confirmed by several techniques, and nanochains (NCs) with diameter of approximately 60 nm consisting of single-crystalline Co and amorphous Co-capped layer (about 3 nm) have been materialized. The as-synthesized Co samples do not include any other adulterants. The high-quality NC growth mechanism is proposed to be driven by magnetostatic interaction because NC can be reorganized under a weak magnetic field. Room-temperature-enhanced coercivity of NCs was observed, which is considered to have potential applications in spin filtering, high density magnetic recording, and nanosensors. </p> <p> <b>PACS:</b> 61.46.Df; 75.50; 81.07.Vb; 81.07.</p>