ISIS Neutron and Muon Source Data Journal

Thermodynamics of paramagnetic metal - antiferromagnetic insulator transition in RNiO3 (R = Nd, Pr)

Abstract: In this work, we aim to understand the role of the electron, spin, and lattice degrees of freedom (DOF) in RNiO3 (R = Nd and Pr) across the metal-insulator transition (MIT). One promising approach to decipher the contribution from various DOF is to calculate the thermodynamic stability of the metallic and insulating phases. This is done by calculating the phonon, electron, and spin entropy across MIT and determine the dominant contribution to the total entropy. Using inelastic neutron scattering (INS), we plan to measure phonon and magnon scattering intensity, and subsequently correct for background, multiphonon, and multiple scattering to obtain the phonon and magnon density of states (DOS). From measured DOS, we will calculate the phonon and magnon entropy contributions and combine with simulations of the electron entropy to determine the overall thermodynamic stability across the MIT.

Principal Investigator: Professor Dipanshu Bansal
Experimenter: Mr Aditya Prasad Roy
Local Contact: Dr Duc Le
Experimenter: Dr Naini Bajaj
Experimenter: Mr Arush Gupta

DOI: 10.5286/ISIS.E.RB2010134

ISIS Experiment Number: RB2010134

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 Dipanshu Bansal et al; (2021): Thermodynamics of paramagnetic metal - antiferromagnetic insulator transition in RNiO3 (R = Nd, Pr), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010134

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