Title of article
Phase transformation in reaction-sintered Gd3Fe5O12–ZrO2 (II)
Author/Authors
Wu، نويسنده , , M.L. and Shen، نويسنده , , P and Gan، نويسنده , , D، نويسنده ,
Pages
8
From page
124
To page
131
Abstract
Gadolinium iron garnet/zirconia (GIG/ZrO2) samples of 1:9 wt. ratio are reaction sintered at 1300°C for 8 h and studied by analytical electron microscopy. The GIG grain was found to transform into a Zr4+-doped hematite core surrounded by Gd-stabilized cubic-ZrO2 polycrystals shell. The hematite core is a single crystal nearly free of Gd3+. Iron zirconate was found to precipitate within the hematite core, and it is the same as that first found in the aged α-Fe2O3–ZrO2 composite. The size of the iron zirconate precipitates decrease from core center toward the edge. The probable process leading to the microstructure and phase changes is discussed.
Keywords
Gadolinium iron garnet , Zirconia , Hematite , Iron zirconate precipitate , AEM
Journal title
Astroparticle Physics
Record number
2057531
Link To Document