P 25 Paramagnetic defects in aluminum oxide nanopowders / V. S. Kiiko, E. V. Zabolotskaya, L. V. Zolotukhina, N. M. Frolov, I. A. Dmitriev, Yu. N. Makurin // Glass and Ceramics. - 2001. - Vol. 58, № 3-4. - P111-114 : il. - Bibliogr. : p. 114 (9 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ДЕФЕКТЫ -- НАНОПОРОШКИ -- ОКСИД АЛЮМИНИЯ -- КЕРАМИКА Аннотация: The defective structure of aluminum oxide nanopowders and ceramics based on these powders is analyzed using the electron paramagnetic resonance method. Inherent structural point defects, which are oxygen vacancies having a trapped electron (F+ centers), are identified in the nanopowders. Among the impurity defects, the signals of Fe3+, Cr3+, and Ti3+, which occupy different crystallographic positions in Al2O3 or exist as separate phases, are identified in the nanopowders and ceramics Полный текст |