  The crystallization and magnetic behavior of yttrium iron garnet (YIG)
prepared by metallo-organic decomposition (MOD) method are discussed. The
chemistry and physics related to synthesis of iron and yttrium carboxylates
based on 2-ethylhexanoic acid (2EHA) are studied, since no literature was found
which elucidates synthesis of metallo-organic precursor of YIG in spite of the
literatures of doped YIG samples such as Bi-YIG. Typically, the metal
carboxylates used in preparation of ceramic oxide materials are
2-ethylhexanoate (2EH) solvents. Herein, the synthesis, thermal behavior and
solubility of yttrium and iron 2EH used in synthesis of YIG powder by MOD are
reported. The crystallization and magnetic parameters, including saturation
magnetization and coercivity of these samples, smoothly change as a function of
the annealing temperature. It is observed that high sintering temperature of
1300 to 1400 {\deg}C promotes the diffraction peaks of YIG, therefore, we can
conclude that the formation of YIG in MOD method increases the crystallization
temperature. The maximum value of saturation magnetization and minimum value of
coercivity and remanence are observed for the sample sintered at 1200{\deg}C
which are 13.7 emu/g, 10.38 Oe and 1.5 emu/g, respectively. This study cites
the drawbacks in chemical synthesis of metallo-organic based YIG production.
