Heat realease, thermal hysteresis and magnetic ordering evolution with physical and chemical pressure in RbMnFe
Heat storage represents an important societal issue. Developing materials able to store, transport and release heat on demand are of great interest and may help lowering energy consumption. RbMnFe materials exhibit phase transition driven by temperature, pressure or light, due to coupled Mn-Fe Charge-Transfer (CT) and symmetry breaking (SB). This large enthalpy transition exhibits 70 K wide thermal hysteresis around room temperature. Our recent model has shown that it results from the coupling between CT and SB, contributing both to the volume strain. In addition to temperature, pressure is an efficient way to shift from one side of the hysteresis to the other, allowing for heat storing and releasing at room temperature. Chemical substitution also allows shift the thermal hysteresis. Pressure may also affect the ferromagnetic Curie temperature (12 K). This proposal aims at gaining knowledge on the pressure-induced heat-release and magnetic ordering for both SB, responsible for magnetic anisotropy and Bragg peak splitting, and CT driving volume change. Neutron diffraction, combined to He (P,T) cell allowing for fine pressure tuning, is therefore required.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
Eric Collet; GUERIN Laurent; HERVE Marius; LEMEE Marie Helene; OHKOSHI Shin-ichi; Ricardo Guillermo Torres Ramírez and Elzbieta Trzop. (2023). Heat realease, thermal hysteresis and magnetic ordering evolution with physical and chemical pressure in RbMnFe. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-24-710
This data is not yet public
This data is not yet public
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