Control of magnetization dynamics by substrate orientation in YIG thin films

Abstract Yttrium Iron Garnet (YIG) and bismuth (Bi) substituted YIG (Bi 0.1 Y 2.9 Fe 5 O 12 , BYG) films are grown in-situ on single crystalline Gadolinium Gallium (GGG) substrates [with (100) (111) orientations] using pulsed laser deposition (PLD) technique. As the orientation of Bi-YIG film changes from to (111), lattice constant is enhanced 12.384 Å 12.401 due dependent distribution Bi 3+ ions at dodecahedral sites in cell. Atomic force microscopy (AFM) images show smooth surfaces with roughness 0.308 nm (111). The change substrate leads modification Gilbert damping which, turn, gives rise enhancement ferromagnetic resonance (FMR) line width. best values found be (0.54 ± 0.06) × 10 ?4 for (6.27 0.33) oriented films. Angle variation ( ? ) measurements H r also performed, that shows a four-fold symmetry field film. In addition, value effective magnetization (4 ? M eff extrinsic linewidth (?H 0 observed orientation. Hence PLD growth can assist single-crystalline BYG perfect interface used spintronics related device applications.