Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.

Issue 43, 2017
Previous Article Next Article

Dipole-induced exchange bias

Author affiliations


The discovery of dipole-induced exchange bias (EB), switching from negative to positive sign, is reported in systems where the antiferromagnet and the ferromagnet are separated by a paramagnetic spacer (AFM–PM–FM). The magnitude and sign of the EB is determined by the cooling field strength and the PM thickness. The same cooling field yields negative EB for thin spacers, and positive EB for thicker ones. The EB decay profile as a function of the spacer thickness, and the change of sign, are attributed to long-ranged dipole coupling. Our model, which accounts quantitatively for the experimental results, ignores the short range interfacial exchange interactions of the usual EB theories. Instead, it retains solely the long range dipole field that allows for the coupling of the FM and AFM across the PM spacer. The experiments allow for novel switching capabilities of long range EB systems, while the theory allows description of the structures where the FM and AFM are not in atomic contact. The results provide a new approach to design novel interacting heterostructures.

Graphical abstract: Dipole-induced exchange bias

Back to tab navigation

Supplementary files

Article information

26 Jul 2017
02 Oct 2017
First published
04 Oct 2017

Nanoscale, 2017,9, 17074-17079
Article type

Dipole-induced exchange bias

F. Torres, R. Morales, I. K. Schuller and M. Kiwi, Nanoscale, 2017, 9, 17074
DOI: 10.1039/C7NR05491B

Social activity

Search articles by author