Strain effect on the magnetic responce of yttrium iron garnet (YIG) thin films deposited by pulsed laser deposition (PLD)

One of the promising studies that serve as a tool for propagating spin waves is undoubtedly the has discovery of YIG (𝑌3𝐹𝑒5𝑂12, Yttrium-Iron Garnet) material. When carrying information with this material, the heat problem is almost eliminated. Today, YIG is known to have the lowest magnetization damping available. This unique feature allows spin waves to propagate over great distances. In addition, YIG is an insulator that makes information and communication technology devices efficient. The presented thesis deals with the growth and characterization of thin, epitaxial yttrium-iron garnet films. Samples were grown using the pulsed laser deposition technique (PLD) on Gadolinium Gallium Garnet (GGG-001), Yttrium Aluminum Garnet (YAG-001), Silicon, and Gadolinium Skandiyum Oksit (𝐺𝑑𝑆𝑐𝑂3) substrates. The selection of the substrate was chosen by requiring a low lattice mismatch between YIG and the substrates. Then, structural properties and surface morphology were determined using X-ray diffraction (XRD), X-ray reflectometry (XRR), and atomic force microscopy (AFM), respectively. Static and dynamic magnetic properties were investigated by vibrating sample magnetometer (VSM) and broadband ferromagnetic resonance (VNA-FMR) technique.