ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Inelastic Neutron Scattering on the self- and self-vacancy-doped MnNiGe alloys
Abstract: Depending on the doping strategy, a combination of self and self-vacancy-doping significantly modifies the modulation of the incommensurate magnetic structure of the MnNiGe alloy of the magnetic equiatomic alloy family. The pristine MnNiGe alloy was reported to show a helically modulated antiferromagnetic (AFM) structure. Recent neutron powder diffraction results from our group (data recorded at POWGEN diffractometer, ORNL) indicate that helical modulation of the AFM structure remains unperturbed in self-doped alloy, whereas for self-vacancy doped it changes to commensurate. A large change in propagation vector is another critical difference between these two studied alloys. Such a change in AFM modulation may also influence the magnetic excitation behavior (spin wave/spin fluctuation), which is reflected in rich magnetic and magnetofunctional behavior. The present proposal aimed to probe such changes in excitation behavior through inelastic neutron scattering studies at MARI of two doped alloys on nominal compositions Mn1.25Ni0.75Ge and Mn1.04Ni0.86Ge.
Principal Investigator: Dr Souvik Chatterjee
Experimenter: Mr Anirban Saha
Local Contact: Dr Duc Le
Experimenter: Dr Devashi Adroja
Experimenter: Miss Riya Roy
Experimenter: Mr Sanat Kumar ADHIKARI
Experimenter: Ms Sanchita Ghosh
Experimenter: Dr Jhuma Sannigrahi
DOI: 10.5286/ISIS.E.RB2520382
ISIS Experiment Number: RB2520382
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2520382-1 | MARI | 08 December 2028 | Download |
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 Souvik Chatterjee et al; (2025): Inelastic Neutron Scattering on the self- and self-vacancy-doped MnNiGe alloys, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520382
Data is released under the CC-BY-4.0 license.
