Berlin 2018 – scientific programme
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MA: Fachverband Magnetismus
MA 39: Micro- and nanostructured magnetic materials
MA 39.1: Talk
Thursday, March 15, 2018, 09:30–09:45, H 0112
Annealing-time and annealing-temperature dependencies of the size of Ni-Mn-In shell-ferromagnetic nano-precipitates by Scherrer analysis — •Lars Dincklake1, Franziska Scheibel1, Asli Cakir2, Michael Farle1, and Mehmet Acet1 — 1Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, Germany — 2Mugla Sitki Kocman University, 48000 Mugla, Turkey
Shell-ferromagnetic effects are observed in Ni-Mn-based off-stoichiometric Heuslers decomposed into ferromagnetic precipitates embedded in an antiferromagnetic matrix when the surface-to-volume ratio of the precipitates are sufficiently large. However, since the size of the precipitates have until now not been determined, it is not known which ratios are involved. Here we carry out a Scherrer analysis on decomposed specimens to determine the precipitate-size as a function of decomposition temperature and time.