Platinum/Yttrium Iron Garnet Inverted Structures for Spin Current Transport
arXiv:1604.08465 · doi:10.1063/1.4953454
Abstract
30-80 nm thick yttrium iron garnet (YIG) films are grown by pulsed laser deposition on a 5 nm thick sputtered Pt atop gadolinium gallium garnet substrate (GGG) (110). Upon post-growth rapid thermal annealing, single crystal YIG(110) emerges as if it were epitaxially grown on GGG(110) despite the presence of the intermediate Pt film. The YIG surface shows atomic steps with the root-mean-square roughness of 0.12 nm on flat terraces. Both Pt/YIG and GGG/Pt interfaces are atomically sharp. The resulting YIG(110) films show clear in-plane uniaxial magnetic anisotropy with a well-defined easy axis along <001> and a peak-to-peak ferromagnetic resonance linewidth of 7.5 Oe at 9.32 GHz, similar to YIG epitaxilly grown on GGG. Both spin Hall magnetoresistance and longitudinal spin Seebeck effects in the inverted bilayers indicate excellent Pt/YIG interface quality.
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Cited by in corpus (6)
- Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures
- Systematic Control of Strain-Induced Perpendicular Magnetic Anisotropy in Epitaxial Europium and Terbium Iron Garnets Thin Films
- High Saturation Magnetization, Low Coercivity and Fine YIG Nanoparticles Prepared by Modifying Co-Precipitation Method
- Spin Hall magnetoresistance in antiferromagnetic insulators
- Fabrication of yttrium-iron-garnet/Pt multilayers for the longitudinal spin Seebeck effect
- Static magnetic proximity effects and spin Hall magnetoresistance in Pt/YFeO and inverted YFeO/Pt bilayers