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.

ISIS Neutron and Muon Source

ISIS Neutron and Muon Data

Induced Local Order in Fe62Ni

Data collected on the
POLARIS instrument
at the ISIS facility

Abstract: One day of ISIS Polaris beamtime is requested to examine atomic superlattice order in isotopically tailored Fe62Ni and Fe62Ni(Ti); this order was developed using specialized processing protocols. While already verified by M�ssbauer spectroscopy and suggested by previous neutron diffraction, the data are not perfectly convincing for high-impact dissemination. Ordered FeNi (?tetrataenite?) can store large magnetic energy by virtue of its superlattice structure. This crystallographic feature develops in Nature over billions of years and induces a strong magnetocrystalline anisotropy that is not found in the disordered alloy counterpart. Accelerating order in FeNi will foster sustainable, critical-element-free strong permanent magnets that will be transformational for sustainable, green energy applications and geopolitically influenced supply chains. These samples have been synthesized specifically for neutron diffraction studies: the 62Ni isotope furnishes a large and negative neutron scattering cross section, greatly amplifying FeNi superlattice diffraction peaks to permit clear identification of order. With the Polaris data we aim to confirm the existence of processing-induced atomic order and to establish its spatial extent. A positive result will motivate accelerated development of the processing/manufacturing approach. Polaris? significantly higher neutron flux will facilitate collection of high-quality, high-q data from the unavoidably small mass of these samples.

Public release date: 17 November 2026

Local Contact: Professor Paul Henry
Experimenter: Mr Jack O'Brien
Experimenter: Professor Laura H. Lewis

DOI: 10.5286/ISIS.E.RB2300011-1

Parent DOI: 10.5286/ISIS.E.RB2300011

ISIS Experiment Number: RB2300011

Part Number: 1

This dataset is NOT yet publicly available.
The release date is: 17 November 2026

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the dataset

Date of Experiment: 15 November 2023

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 Paul Henry et al; (2023): Induced Local Order in Fe62Ni, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2300011-1

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