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.
Size-Driven Magnetic Transitions in Electron-Doped Cuprates: A Muon Spin Relaxation Study
Abstract: Nanoscale confinement in correlated electron systems provides a powerful route to manipulate emergent quantum phenomena. Here, we explore size-dependent magnetism in electron-doped cuprate nanoparticles, focusing on Eu1.85Ce0.15CuO4+?-? (ECCO). Compared to hole-doped cuprates, electron-doped variants face experimental challenges due to the sensitivity of superconductivity and magnetism to oxygen nonstoichiometry. To overcome this, we optimized ? within the critical range of 0.040?0.090, where superconductivity can emerge, by annealing under argon at 700?°C for 8 hours. Using a sol?gel method, we synthesized phase-pure ECCO with sizes of 56, 108, and 169?nm. Magnetic measurements show a transition from paramagnetism at 169?nm to spin-glass behavior and emergent ferromagnetism in smaller particles. Curie-law analysis confirms enhanced magnetic moments with decreasing size. To clarify the magnetic ground state and spin dynamics, we propose muon spin relaxation (?SR) measurements. Zero-field ?SR (2?300?K) will detect static magnetism and spin freezing, while longitudinal-field ?SR (10?1000?G) will probe fluctuation dynamics near the spin-glass transition. These experiments will advance understanding of size-tuned magnetism and its relation to superconductivity in electron-doped cuprates.
Principal Investigator: Dr Suci Winarsih
Local Contact: Dr Alex Louat
Experimenter: Dr Rhea Stewart
Experimenter: Ms Devi Nurmalasari
Experimenter: Ms Siti Hindun Hindiyati
Experimenter: Professor Risdiana Risdiana
DOI: 10.5286/ISIS.E.RB2520008
ISIS Experiment Number: RB2520008
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2520008-1 | MUSR | 07 October 2028 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
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publication is as:
[author], [date], [title], [publisher],
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For Example:
Dr Suci Winarsih et al; (2025): Size-Driven Magnetic Transitions in Electron-Doped Cuprates: A Muon Spin Relaxation Study , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520008
Data is released under the CC-BY-4.0 license.
