First and second order magnetic anisotropy and damping of europium iron garnet under high strain

Abstract

Understanding and tailoring static and dynamic properties of magnetic insulator thin films is important for spintronic device applications. Here, we grow atomically flat epitaxial europium iron garnet (EuIG) thin films by pulsed laser deposition on (111)-oriented garnet substrates with a range of lattice parameters. By controlling the lattice mismatch between EuIG and the substrates, we tune the strain in EuIG films from compressive to tensile regime, which is characterized by X-ray diffraction. Using ferromagnetic resonance, we find that in addition to the first-order perpendicular magnetic anisotropy which depends linearly on the strain, there is a significant second-order one that has a quadratic strain dependence. Inhomogeneous linewidth of the ferromagnetic resonance increases notably with increasing strain, while the Gilbert damping parameter remains nearly constant (~ 2x10^-2). These results provide valuable insight into the spin dynamics in ferrimagnetic insulators and useful guidance for material synthesis and engineering of next-generation spintronics applications.

References in corpus (6)

• Spin Seebeck insulator
• Proximity-induced ferromagnetism in graphene revealed by anomalous Hall effect
• Anomalous Hall hysteresis in Tm3Fe5O12/Pt with strain-induced perpendicular magnetic anisotropy
• Systematic Control of Strain-Induced Perpendicular Magnetic Anisotropy in Epitaxial Europium and Terbium Iron Garnets Thin Films
• Low-damping sub-10-nm thin films of lutetium iron garnet grown by molecular-beam epitaxy
• Ultrafast Measurements of the Interfacial Spin Seebeck Effect in Au and Rare-Earth Iron Garnet Bilayers

Cited by in corpus (5)

• Theory of inertial spin dynamics in anisotropic ferromagnets
• Strain-Tunable Magnetic Compensation Temperature of Epitaxial Tb${}_3$Fe${}_5$O${}_{12}$ Thin Films
• Controlling selection rules for magnon scattering in nanomagnets by spatial symmetry breaking
• Ultrathin bismuth-yttrium iron garnet films with tunable magnetic anisotropy
• Robust perpendicular magnetic anisotropy in Ce substituted yttrium iron garnet epitaxial thin films