Visible–Near‐Infrared Diffuse Reflectance and Optical Energy Gap of Sodium Niobate Modified by Mn Ions: Na(Nb1−zMnz)O3and (Na1−xBix)(Nb1−yMny)O3Compounds Study
Abstract:The optical and electrical properties of sodium niobate crystals and ceramics doped with Mn atoms are studied. Na(Nb1−zMnz)O3 crystals exhibit actual z = 0–1.0 wt% Mn content. The Na(Nb1−zMnz)O3 ceramics contains Mn from the 0–5 wt% range. The (Na1−xBix)(Nb1−yMny)O3 ceramics is codoped with x = 0.015–0.50 and y = 0.01–0.33. Mn addition decreases the reflectance magnitude. Combined nonstoichiometry and local disorder in the crystal lattice, resulting from Mn doping and oxygen vacancies, induce contributions to … Show more
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