000170199 001__ 170199
000170199 005__ 20260407115449.0
000170199 0247_ $$2doi$$a10.1103/8l57-yqsx
000170199 0248_ $$2sideral$$a148704
000170199 037__ $$aART-2026-148704
000170199 041__ $$aeng
000170199 100__ $$aWang, Hanchen
000170199 245__ $$aUltrathin bismuth-yttrium iron garnet films with tunable magnetic anisotropy
000170199 260__ $$c2026
000170199 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170199 5203_ $$aWe report on the epitaxial growth of nm-thick films of bismuth-substituted yttrium iron garnet (BiYIG) by high-temperature off-axis radio-frequency magnetron sputtering. We demonstrate accurate control of the magnetic properties by tuning of the sputtering parameters and epitaxial strain on various (111)-oriented garnet substrates. BiYIG films with up to −0.80% lattice mismatch with the substrate remain fully strained up to 60 nm thick, maintaining a high crystalline quality. Transmission electron microscopy and energy-dispersive x-ray spectroscopy confirm coherent epitaxial growth, the absence of defects, and limited interdiffusion at the BiYIG/substrate interface. Varying the tensile or compressive strain between −0.80% and +0.56% in BiYIG allows for accurate compensation of the total magnetic anisotropy through magnetoelastic coupling. The effective magnetic anisotropy of sputtered BiYIG films can be further tuned via the off-axis deposition angle and the oxygen flow during growth, which determine the cation stoichiometry. Under optimized growth conditions, a ferromagnetic resonance (FMR) linewidth of 1 mT at 10 GHz is reliably obtained even for thicknesses as low as 10 nm. We also report small FMR linewidths in ultrathin (2–5 nm) BiYIG films grown on diamagnetic substrate yttrium scandium gallium garnet. These findings highlight the promise of low-damping, strain-engineered nm-thick BiYIG films for implementing advanced functionalities in spin-orbitronic and magnonic devices. Specifically, the magnetic-anisotropy compensation and low damping enable large cone-angle magnetization dynamics immune to magnon-magnon nonlinear scattering.
000170199 536__ $$9info:eu-repo/grantAgreement/EC/H2020/101007825/EU/ULtra ThIn MAgneto Thermal sEnsor-Ing/ULTIMATE-I$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101007825-ULTIMATE-I
000170199 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000170199 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170199 700__ $$aLegrand, William
000170199 700__ $$aPetrosyan, Davit
000170199 700__ $$aKang, Min-Gu
000170199 700__ $$aKaradža, Emir
000170199 700__ $$aMatsumoto, Hiroki
000170199 700__ $$aSchlitz, Richard
000170199 700__ $$aLammel, Michaela
000170199 700__ $$0(orcid)0000-0002-1296-4793$$aAguirre, Myriam H.$$uUniversidad de Zaragoza
000170199 700__ $$aGambardella, Pietro
000170199 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000170199 773__ $$g10, 3 (2026), [9 pp.]$$pPhys. rev. mater.$$tPHYSICAL REVIEW MATERIALS$$x2475-9953
000170199 8564_ $$s2838456$$uhttps://zaguan.unizar.es/record/170199/files/texto_completo.pdf$$yVersión publicada
000170199 8564_ $$s3034752$$uhttps://zaguan.unizar.es/record/170199/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000170199 909CO $$ooai:zaguan.unizar.es:170199$$particulos$$pdriver
000170199 951__ $$a2026-03-26-14:31:33
000170199 980__ $$aARTICLE