Abstract
Domain wall motion is detected for the first time during the transition to a ferroelastic and spin state ordered phase of a spin crossover complex. Single‐crystal X‐ray diffraction and resonant ultrasound spectroscopy (RUS) revealed two distinct symmetry‐breaking phase transitions in the mononuclear Mn3+ compound [Mn(3,5‐diBr‐sal2(323))]BPh4, 1. The first at 250 K, involves the space group change Cc→Pc and is thermodynamically continuous, while the second, Pc→P1 at 85 K, is discontinuous and related to spin crossover and spin state ordering. Stress‐induced domain wall mobility was interpreted on the basis of a steep increase in acoustic loss immediately below the the Pc‐P1 transition
Highlights
Domain wall motion is detected for the first time during the crystals both intramolecular and intermolecular degrees of transition to a ferroelastic and spin-state ordered phase of a spin freedom can be modulated to induce changes in either local point crossover complex
Domain walls (DWs) in ferroic materials – ferromagnets, ferroelectrics, ferroelastics - represent the regions where there is a change in order parameter.[1]
The dimensions, mobility and internal structure of domain walls continue to yield useful functionality such as magnetic racetrack memory,[2] where the supersonic motion[3] of magnetic DWs is driven by spin-polarized currents
Summary
Domain wall motion is detected for the first time during the crystals both intramolecular and intermolecular degrees of transition to a ferroelastic and spin-state ordered phase of a spin freedom can be modulated to induce changes in either local point crossover complex.
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