Exchange Spring Magnets

Welcome! This website is dedicated to research activities associated with Exchange Spring Magnets. Our research focuses on the dynamic properties of exchange spring (ES) structures that form through the thickness of multilayer thin films.  Alternate layers are termed hard and soft because it is easier to form the helical structure in the latter. The helical structure is induced either by applying a magnetic field or by changing the relative alignment of the magnetic moments in different hard layers so as to twist the magnetic moments in the soft layers in between. By studying the form of the ES structure, and its response to external stimuli, we can obtain information about how the strength of the exchange interaction varies through the structure.