ISIS Neutron and Muon Source Data Journal

Crystal symmetry change at the magnetic transition in MnB and FeB compounds predicted by density functional theory

Abstract: The "magnetocaloric effect" (MCE) is based on the entropy difference encountered when themagnetic state of a material is changed and it can be used for refrigeration. However, in a reverseprocess a magnetocaloric material can also be used to directly convert heat to electricity. Theefficiency of such a thermomagnetic generator can be as high as 55.5% of Carnot efficiency.Our recent investigations revealed a sharp (first order type), but non-hysteretic (second order type) magnetic transition in manganese monoboride, which suggest tricriticality, an essential feature of reversible magnetic phase transitions with large entropy changes for applications such as magnetic cooling. Finding its origin is a useful step towards designing new functional magnets.

Principal Investigator: Dr Zsolt Gercsi
Experimenter: Dr Karl Sandeman
Experimenter: Mr Maximilian Fries
Experimenter: Dr Oliver Gutfleisch
Local Contact: Dr Alexandra Gibbs
Experimenter: Dr Semih Ener

DOI: 10.5286/ISIS.E.RB1610233

ISIS Experiment Number: RB1610233

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 Zsolt Gercsi et al; (2016): Crystal symmetry change at the magnetic transition in MnB and FeB compounds predicted by density functional theory, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610233

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