Study of Substituted YIG at Nano Level

Abstract

YIG is the key material in microwave and communication devices. Researchers are constantly looking for new materials that can enhance the bandwidth of microwave operation and can also be operated at high frequency. Enhancement in the microwave operation time even by few microseconds matters a lot in microwave technology. As the structural, magnetic and dielectric properties are sensitive to synthesis parameters, there is still much scope from the fundamental and application point of view for aluminium as well as aluminium and lanthanum co-substituted YIG. In the present work, garnet nanoferrites samples namely, Al-YIG and La-Al-YIG have been prepared using the sol-gel route. The effect of Aluminium ion substitution and effect of Lanthanum Aluminium co-substitution on the structural, morphological and magnetic properties of YIG nanoferrites have been studied using various characterization techniques such as X-ray diffraction, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscope, Vibrating Sample Magnetometer, Electron Spin Resonance Spectroscopy. The structural, magnetic and morphological properties obtained in this study will be useful to enhance the frequency range of the current microwave devices. Furthermore, these properties will also lead to some novel application in some new microwave devices. newline