تقرير
Role of gallium diffusion in the formation of a magnetically dead layer at Y3Fe5O12 / Gd3Ga5O12 epitaxial interface
| العنوان: | Role of gallium diffusion in the formation of a magnetically dead layer at Y3Fe5O12 / Gd3Ga5O12 epitaxial interface |
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| المؤلفون: | Suturin, S. M., Korovin, A. M., Bursian, V. E., Lutsev, L. V., Bourobina, V., Yakovlev, N. L., Montecchi, M., Pasquali, L., Ukleev, V., Vorobiev, A., Devishvili, A., Sokolov, N. S. |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | We have clarified the origin of magnetically dead interface layer formed in yttrium iron garnet (YIG) films grown at above 700{\deg}C onto gadolinium gallium garnet (GGG) substrate by means of laser molecular beam epitaxy. The diffusion-assisted formation of a Ga-rich region at the YIG / GGG interface is demonstrated by means of composition depth profiling performed by X-ray photoelectron spectroscopy, secondary ion mass spectroscopy and X-ray and neutron reflectometry. Our finding is in sharp contrast to the earlier expressed assumption that Gd acts as a migrant element in the YIG/GGG system. We further correlate the presence of Ga-rich transition layer with considerable quenching of ferromagnetic resonance and spin wave propagation in thin YIG films. Finally, we clarify the origin of the enigmatic low-density overlayer that is often observed in neutron and X-ray reflectometry studies of the YIG / GGG epitaxial system. Comment: 19 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevMaterials.2.104404 |
| URL الوصول: | http://arxiv.org/abs/1811.01321 |
| رقم الأكسشن: | edsarx.1811.01321 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevMaterials.2.104404 |
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