ISIS Neutron and Muon Source Data Journal

Chemical and physical pressure-tuned magneto-structural coupling in MnCoGe alloys

Abstract: MnCoGe alloys show a variety of intriguing phenomena like magneto-caloric effect, baro-caloric effect and negative thermal expansion. Our recent results show that chemical and physical pressures play similar roles in coupling/decoupling the magnetic and structural transitions in the MnCoGe alloys. Both of them vary the interatomic distances, which strongly influences the magnetic interactions and chemical bonds. Nevertheless, unlike its chemical couterpart, the physical pressure does not suffer from parasitic effets originating in the substitution itself, since it retains the composition, purity and the number of valence electrons in the sample. Consequently, a comprehensive study on the evolution of the magnetic and crystallographic structures under chemical and physical pressures can provide essential insight into the origin of the magneto-structural transition in the MnCoGe alloys.

Principal Investigator: Dr Xuefei Miao
Local Contact: Dr Craig Bull
Experimenter: Mr Wenhui Guo
Experimenter: Miss Luana Caron

DOI: 10.5286/ISIS.E.RB2010390

ISIS Experiment Number: RB2010390

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:
Dr Xuefei Miao et al; (2020): Chemical and physical pressure-tuned magneto-structural coupling in MnCoGe alloys, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010390

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