Exchange Bias in Core–Shell Nanowires and Nanotubes

This chapter provides an overview of the exchange-bias effect observed in core–shell one-dimensional (1D) nanostructures. In the first part, we introduce the fabrication methods mostly used to grow core–shell 1D nanostructures. The chapter is then divided into three main sections on the study of the exchange-bias effect in three main types of core–shell nanowires and nanotubes, respectively: (i) with a ferromagnetic (FM) core and an antiferromagnetic (AFM) shell; (ii) with an AFM core and uncompensated spins at the surface; and (iii) with an FM core and a multiferroic shell. Each section describes, in more detail, the EB coupling observed for each nanostructure type, including the distribution of blocking temperatures, the training effect, and its temperature dependence. Finally, the main applications of exchange-biased core–shell 1D nanostructures are summarized.