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Raw powders of BaHfO 3 :Ce were prepared with modified Pechini process and were calcined in the 650–1700°C range of temperatures, at different atmospheres – air, vacuum and nitrogen–hydrogen mixture. The powders were converted into sintered ceramics by vacuum sintering. The materials were characterized by XRD, TEM, photoluminescence and radioluminescence spectroscopy. UV-VUV excitation spectra...
Crystal structures of hafnia are discussed and it is shown that addition of about 7 at.% of Lu to the HfO 2 host lattice enforces the mixed composition to crystallize in cubic structure even at room temperature. Without Lu HfO 2 crystallizes in monoclinic structure. Luminescence and luminescence excitation spectra of Hf 0.93 Lu 0.07 O 1.965 are presented and...
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