ISIS Neutron and Muon Source Data Journal

Inelastic Neutron scattering studies of CaMn7O12 based multiferroic compounds

Abstract: CaMn7O12 is an interesting multiferroic material showing colossal electric polarization below the magnetic transition despite its helical magnetic structure with screw axis. Recently, we have studied the sample by doping trivalent La at the Ca site and a large change in polarization is observed. The multiferroicity in CaMn7O12 is still a matter of debate and at least two possible mechanisms are mooted in the literature. We propose here to perform inelastic neutron scattering experiment on the polycrystalline samples to investigate the spin wave excitations in the parent CaMn7O12 compound and its La derivatives to resolve the issue. The experiment will probe several other novel properties such as spin-gap, crystal field anomalies and will help us to provide a microscopic picture of magnetic interactions pathways and their natture relative strength.

Principal Investigator: Professor Subham Majumdar
Experimenter: Dr Anupam Banerjee
Experimenter: Dr Jhuma Sannigrahi
Experimenter: Dr Devashi Adroja
Experimenter: Dr Daniel Brunt
Experimenter: Dr Oleg Petrenko
Experimenter: Dr Simon Titmuss
Experimenter: Dr Iva Manasi

DOI: 10.5286/ISIS.E.RB1768021

ISIS Experiment Number: RB1768021

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:
Professor Subham Majumdar et al; (2018): Inelastic Neutron scattering studies of CaMn7O12 based multiferroic compounds, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1768021

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