Yttrium iron garnet (YIG) is a well-known material extensively utilized in magnonics, spintronics, and spin caloritronics.
The development of YIG for practical applications has been the subject of considerable research. In
this study, we present the fabrication of YIG films through the thermalization of chemically synthesized YIG
using a microwave kiln. The YIG solution was prepared from yttrium and iron precursors in a stoichiometric
ratio and subsequently coated onto silicon (Si) substrates. After annealing the coated YIG film with a specific
microwave exposure duration, a crystallized YIG film was obtained, confirmed by grazing incidence X-ray diffraction
(GI-XRD) analysis. The static magnetic properties were characterized using a vibration sample magnetometer
(VSM), revealing comparable parameters, such as coercivity (HC) = 33.9 ± 0.5 Oe and saturation
magnetization (MS) = 135.9 ± 1.1 emu/cm3 to those of YIG films annealed using conventional methods, including
graphited-based and halogen lamp-based furnaces. Additionally, by using Pt as a spin detection layer, the
spin thermoelectric efficiency was investigated via spin Seebeck effect measurements, indicating that YIG films
annealed in a microwave kiln exhibit potential as a fabrication technique for YIG applications in spin caloritronics.