Title page for ETD etd-12272002-143144


Type of Document Master's Thesis
Author DiBiccari, Anders Owen
Author's Email Address adibicca@vt.edu; vtanders@lycos.com
URN etd-12272002-143144
Title Sol-gel processing of RxY3-xAlyFe5-yO12 magneto-optical films
Degree Master of Science
Department Materials Science and Engineering
Advisory Committee
Advisor Name Title
Lu, Guo-Quan Committee Chair
Corcoran, Sean Gerald Committee Member
Reynolds, William T. Jr. Committee Member
Keywords
  • sol-gel processing
  • rare earth and aluminum doped yttrium iron garnet
  • GGG
  • magneto-optical properties
Date of Defense 2002-12-13
Availability unrestricted
Abstract
The goal of this research was the fabrication of thin films with magneto-optic (MO) properties. Accomplishment of this task was achieved via sol-gel processing of rare-earth and aluminum substituted yttrium-iron garnet (RxY3-xAlyFe5-yO12, R,Al:YIG), where R= Bi, Gd, Er, Ho. Detailed are the processing conditions, parameters and results leading to R,Al:YIG films with MO response. Success was attained with a 0.25M Gd,Al:YIG solution spin coated for 120 seconds at 3500rpm onto a (111) gadolinium gallium garnet (GGG) substrate and calcinated at 900°C for 4 hours. Samples were characterized via x-ray diffraction (XRD), magneto-optical loop tracer, scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS), profilometry and optical microscopy.
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