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.
Unraveling the Mechanism of Anomalous Zero-Thermal-Expansion in Amorphous Alloys through Inelastic Neutron Scattering
Abstract: Negative thermal expansion (NTE) represents a counterintuitive phenomenon with rich physical mechanisms and significant potential for precision instrumentation applications [1-2]. While researchers have discovered numerous NTE/ZTE (zero thermal expansion) crystalline materials since the 1990s [3-4], our latest work have revealed an emergent NTE in an amorphous Fe-based alloys (Phys. Rev. Lett. 2025, 135, 106101, Ref. 5), providing new perspectives for understanding thermal expansion behavior in solids. In this study, through systematic Fe Nb substitution, we have synthesized a series of Fe-Nb-B-P amorphous alloys, which exhibit stable ZTE but variable Curie temperatures (TC) (Fig. 1c). Unlike crystalline systems where a raise in Curie temperature will inevitably increase its thermal expansions via magneto-structural coupling [6-7], the present amorphous system demonstrates an unusual decoupling between Curie temperature and thermal expansions. We propose to use inelastic neutron scattering to measure the Boson peak intensity across different samples, thereby elucidating the mechanism behind the unusual ZTE behavior versus Curie temperature variations in this system.
Principal Investigator: Dr KUN LIN
Local Contact: Dr Duc Le
Experimenter: Miss Jiayi Kang
DOI: 10.5286/ISIS.E.RB2610299
ISIS Experiment Number: RB2610299
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2610299-1 | MARI | 17 May 2029 | Download |
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 KUN LIN et al; (2026): Unraveling the Mechanism of Anomalous Zero-Thermal-Expansion in Amorphous Alloys through Inelastic Neutron Scattering, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610299
Data is released under the CC-BY-4.0 license.
