Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The paper is concerned with solubility models for Y<jats:sub>3</jats:sub>Fe<jats:sub>5</jats:sub>O<jats:sub>12</jats:sub> (YIG) and Gd<jats:sub>3</jats:sub>Ga<jats:sub>5</jats:sub>O<jats:sub>12</jats:sub> (GGG) solved in PbO/B<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> high temperature solutions containing Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> or Ga<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> in excess. It is shown that a new extended eight‐particle model Interprets well the literature data of the solubility of YIG as well as the DTA data of the solubility of GGG. Comparisons of solution enthalpies determined in terms of the single‐molecule, eight‐particle, and extended eight‐particle model are carried out in dependence on the excess concentration of species containing iron or gallium, respectively.</jats:p>