ISIS Neutron and Muon Source Data Journal

Dynamics of Solid Ionic Conductors: Na2Si2O5 and Li2Si2O5

Abstract: We would measure vibrational spectra for Li2Si2O5 and Na2Si2O5, as well as quasielastic neutron scattering (QENS) spectra for Na2SiO5. The measurement of phonon spectra over 300-1300 K is required for characterizing the specific phonon modes relevant to the ionic conductivity and thermal expansion behavior. The measurements would help to identify the phonons which show significant changes as a function of temperature. By combining the vibrational and QENS measurements with first-principles phonon calculations and temperature-dependent molecular dynamics simulations, we expect to gain deeper insights of the origin and mechanism of ionic conductivity in amorphous phase and their relationship to phonons in these compounds. QENS measurements are scheduled at IRIS during May 9-14, 2018. The present proposal is to study the phonon spectrum as a function of temperature.

Principal Investigator: Dr Mayanak Kumar Gupta
Experimenter: Dr Ranjan Mittal
Local Contact: Dr Tatiana Guidi
Experimenter: Mr BALTEJ SINGH GILL
Experimenter: Dr Samrath Lal Chaplot
Experimenter: Dr Devashi Adroja

DOI: 10.5286/ISIS.E.RB1820175

ISIS Experiment Number: RB1820175

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Dr Mayanak Kumar Gupta et al; (2019): Dynamics of Solid Ionic Conductors: Na2Si2O5 and Li2Si2O5, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820175

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