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This study is focused on obtaining large CeAlO3 single crystals. Using Czochralski and Edge-Defined Film Fed Growth techniques, crystals of length up to 130 mm were obtained. The crystals belong to the tetragonal low temperature modification of CeAlO3, space group P4/mmm, a=3.7669Å, с=3.7967Å. Density and crystallographic parameters, as well as some optical, luminescence and magnetic properties of CeAlO3 were studied. The crystals demonstrate rather bright luminescence under UV-excitation, while no luminescence has been registered under Xrays. Ceramic and single crystalline CeAlO3 samples demonstrate p-type conductivity and promising paramagnetic properties.

A significant enhancement in the light attenuation length in 22–55 cm long YAG:Ce and YAG:Ce,Mg fibers grown by the micro-pulling-down method has been reported.

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The technology that was designed for organic composite scintillators as detectors of fast neutrons and alpha particles is applied to develop new composite inorganic detector of thermal neutrons. The composite scintillators on the base of Ce:Gd 2 SiO 5 and Ce:Gd 2 Si 2 O 7 grains were studied. The results of the measurements obtained for single crystals and composite scintillators are compared and discussed.

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