Magnetic patterning: local manipulation of the intergranular exchange coupling via grain boundary engineering.

ABSTRACT: Magnetic patterning, with designed spatial profile of the desired magnetic properties, has been a rising challenge for developing magnetic devices at nanoscale. Most existing methods rely on locally modifying magnetic anisotropy energy or saturation magnetization, and thus post stringent constraints on the adaptability in diverse applications. We propose an alternative route for magnetic patterning: by manipulating the local intergranular exchange coupling to tune lateral magnetic properties. As demonstration, the grain boundary structure of Co/Pt multilayers is engineered by thermal treatment, where the stress state of the multilayers and thus the intergranular exchange coupling can be modified. With Ag passivation layers on top of the Co/Pt multilayers, we can hinder the stress relaxatio

SUBMITTER: Huang KF 

PROVIDER: S-EPMC4496669 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature