ISIS Neutron and Muon Source Data Journal

The role of hydrogen atoms in the ferroelectric transition of [NH4][Zn(HCOO)3].

Abstract: This proposal aims at better understanding the role of the disordered NH4+ ions in driving the ferroelectric transition in [NH4][Zn(HCOO)3] and that of hydrogen bonding in stabilizing the ferroelectric phase.In order to perform a full characterization, we propose to study the structure of the ammonium-zinc formate as a function of temperature. The ferroelectric transition occurs at 192K, therefore a measurement at 300K will elucidate the paraelectric phase. Additional data at 175, 100 and 20K will provide information on the development of the ferroelectric distortion mode and on the order parameter. In addition, the analysis of the temperature dependence of the atomic displacement parameters between 20 and 175K will give information about the low frequency normal modes contributing to the structural phase transition.

Principal Investigator: Dr Silvia Capelli
Experimenter: Dr Gwilherm Nenert

DOI: 10.5286/ISIS.E.RB1510627

ISIS Experiment Number: RB1510627

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Silvia Capelli et al; (2015): The role of hydrogen atoms in the ferroelectric transition of [NH4][Zn(HCOO)3]., STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510627

Data is released under the CC-BY-4.0 license.