“…Research efforts, focusing on the refinement of structure and composition of garnets through the addition of a number of elements into the garnet material system, have resulted in scientific and technological benefits for various emerging applications [1,2,3,4,5,6,7,8,9,10,11,12]. Many reports have demonstrated the successful synthesis of new garnet material types by substituting the yttrium with either the transition-metal or rare-earth ions, such as Bi 3+ , Ce 3+ , Er 3+ , Tb 3+ and others, into the dodecahedral sites, and also replacing the Fe 3+ ions by other elements (such as Ga 3+ , Al 3+ , or other metals) into the tetrahedral sublattice sites [13,14,15,16,17,18,19,20,21,22]. Also, several composite-type material systems have been explored to improve the optical and magneto-optical properties of highly bismuth-substituted ferrite garnet thin-film materials [23,24,25,26,27,28,29].…”