Structure and magnetism of nanostructured Zr$_{2}$Co$_{11}$*

Recently nanostructured Zr$_{2}$Co$_{11}$-based alloys crystallizing in the rhombohederal structure have emerged as novel magnetic material with an appreciable magnetocrystalline anisotropy constant ($K_{1}\approx $ 20 Mergs/cm$^{3}$), a high saturation magnetic polarization ($J_{s} \ge $ 10 kG), and a high Curie temperature ($T_{c} \approx $ 783 K) [1, 2]. The nanostructured Zr$_{2}$Co$_{11}$ films were fabricated using cluster-deposited nanoparticles of smaller than 10 nm as building blocks. The nanoscale effect on structure and room-temperature magnetic properties was investigated by comparing those of melt-spun bulk alloys. In addition, the magnetic properties at elevated temperatures also will be discussed and this will provide a further insight to understand the magnetism of Zr$_{2}$Co$_{11}$ nanostructures and explore the possibility of using them for high-temperature applications.\\[4pt] [1] B. Balamurugan, B. Das, R. Skomski, W. Y. Zhang and D. J. Sellmyer, \textit{Adv. Mater. }25, 6089 (2013) \\[0pt] [2] B. Balamurugan, B. Das, R. Skomski, W. Y. Zhang and D. J. Sellmyer, \textit{J. Phys.: Condens. Matter.} (in press).