ISIS Neutron and Muon Source Data Journal

Understanding the magnetoresistance of a ferromagnetic metal-semiconductor bilayer

Abstract: Spintronic devices using insulating materials offer new advantages for low-power information technologies. A potential material for such proof-of-principle devices is ferromagnetic EuS, which in contact with conducting ferromagnetic permalloy (Py) exhibits an intriguing multi-level magnetoresistance. There is evidence to suggest that this effect originates from a non-collinear alignment of the magnetisation in the two ferromagnetic layers. To obtain insight to the magnetoelectric behaviour and to find potential pathways for device optimisation, we aim to use polarised neutron reflectometry with polarisation analysis to determine the in-plane canting angle between the magnetisation in the EuS and the Py layers. By measuring this canting we can obtain coupling constants that further describe the complex longitudinal and transverse magnetoresistive response we observe in EuS|Py devices.

Public release date: 13 December 2025

Principal Investigator: Dr Naëmi Riccarda Leo
Experimenter: Dr Jorge Puebla
Experimenter: Dr Christy Kinane
Experimenter: Dr Prasanta Muduli
Local Contact: Dr Andrew Caruana

DOI: 10.5286/ISIS.E.RB2220727-1

Parent DOI: 10.5286/ISIS.E.RB2220727

ISIS Experiment Number: RB2220727

Part Number: 1

Date of Experiment: 07 December 2022

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Naëmi Riccarda Leo et al; (2022): Understanding the magnetoresistance of a ferromagnetic metal-semiconductor bilayer, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2220727-1

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