ISIS Neutron and Muon Source Data Journal

Magnon spectrum of helimagnet PtMnGa

Abstract: Nowadays non collinear magnetism is a rapidly growing field in the state-of-the-art applied and academic research. One of such new object is helical magnet PtMnGa which was shown ferromagnet in previous studies. Our theoretical calculation shows that the distance between two Mn-Mn neighbors is too short to keep their spins parallel. To confirm it, we have grown polycrystal and single crystal. The crystal structure is hexagonal similar to previous study. However, the magnetization M(T) shows spin reorientation transition at small magnetic field. we performed neutron diffraction which shows that at 100 K, the structure is commensurate which becomes long range incommensurate antiferromagnetic at 4 K. Furthermore, we intend to resolve magnetic Hamiltonian of this complex magnetic system, so far unknown, by mapping out the magnetic excitations over a large part of the reciprocal space.

Principal Investigator: Professor Dmytro Inosov
Experimenter: Mr Yevhen Onykiienko
Experimenter: Dr Yuliia Tymoshenko
Experimenter: Ms Parul Devi
Local Contact: Dr Helen Walker
Experimenter: Dr Aleksandr Sukhanov
Experimenter: Mr Anton Kulbakov
Experimenter: Dr Alistair Cameron
Experimenter: Mr Tyler Sterling

DOI: 10.5286/ISIS.E.RB1820021

ISIS Experiment Number: RB1820021

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 Dmytro Inosov et al; (2018): Magnon spectrum of helimagnet PtMnGa, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820021

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