Publication at Faculty of Mathematics and Physics |
2010
Abstract
Results of nuclear magnetic resonance studies of axis switching are presented, preceded by careful characterization by magnetic measurements. We detect changes in the 57Fe NMR spectra that evidence the structural transition interrelated with the axis switching.
We also observe the switching process in time and analyze the dynamics of the phenomenon. Phenomenological approach according to Kolmogorov–Johnson–Mehl–Avrami is employed to find a link between the experimental data from magnetization measurements and NMR, showing that the effect observed by these two methods has the same origin.
Additionally, NMR identifies separately the unswitched and switched phase during the switching process.