Effect of magnetic strain and the magnetic history on magnetization states of a permalloy nanowire

The repeatability of magnetic states in nanostructures is crucial for potential applications such as magnetoelectronic applications and logic circuits. In this paper, we present a repeatability study of magnetic states in a long chain of asteroid elements and the effects of magnetic strain caused by previous magnetic states in the wire. The magnetic state in one element causes a strain on the neighboring element and hence decides the type of magnetic configuration in the neighboring element. The determination of the magnetic states in a long chain is complicated by the magnetic strain contributed by their spin arrangements.