Room-temperature spin-glass behaviors and memory effects in Al-substituted Y3Fe5O12 epitaxial film grown by pulsed laser deposition
This study explores the magnetic properties of a thin film of Al-substituted Y3Fe5O12 grown on Y3Al5O12 (111) substrates using pulsed laser deposition. Spin-glass behavior was observed near room temperature in the film, with a spin-freezing temperature of 345 K achieved. This temperature is signific...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2025-06-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0263235 |
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| Summary: | This study explores the magnetic properties of a thin film of Al-substituted Y3Fe5O12 grown on Y3Al5O12 (111) substrates using pulsed laser deposition. Spin-glass behavior was observed near room temperature in the film, with a spin-freezing temperature of 345 K achieved. This temperature is significantly higher than those previously reported for spin-glass systems based on Fe oxides. The film exhibited characteristic memory and rejuvenation effects below the spin-freezing temperature, which are explained by magnetic relaxation via metastable states within a multi-valley energy landscape featuring shallow activation energies. Additionally, photomagnetic memory effects were demonstrated using the magneto-optic effect of the film at room temperature. Our results highlight the potential application of the Al-substituted Y3Fe5O12 film in neuromorphic devices with low energy consumption. |
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| ISSN: | 2158-3226 |