Magnetische und dilatometrische Messungen zur Umwandlungskinetik der Eisen- Palladium- Legierungen

FePd3as a material for studying thermally active artificial spin ice systems

“…The bulk material can have a moment density as high as 600 1 kAm  [28] which is comparable to permalloy and other strongly magnetic materials. The T C of bulk FePd 3 is reported as ~260 °C [27], and the onset of spontaneous reversal in our nanostructures generally begins at about 110 °C, which leaves a large temperature window for experimental studies. Unlike previous studies, which have utilized thin magnetic layers with weak interactions [19][20][21][22] or thick layers and high temperatures [17,18], the studies we report here incorporate simultaneously low temperatures, thick layers, and strong magnetostatic interactions, which are all highly desirable features for a thermally active ASI.…”

“…On the other hand, the lower T Cideally not far above room temperatureallows accessing thermal activation while avoiding high temperatures where nanostructures are prone to degradation. According to binary alloy work [27], the Fe x Pd 1-x system has a local maximum in the T C , centered on the FePd 3 composition, so that fabrications of films within a wide range near this stoichiometric ratio, about 5%, still result in uniform properties and high experimental utility. The bulk material can have a moment density as high as 600 1 kAm  [28] which is comparable to permalloy and other strongly magnetic materials.…”