РОССИЙСКАЯ АКАДЕМИЯ НАУК

УРАЛЬСКОЕ ОТДЕЛЕНИЕ

ИНСТИТУТ ХИМИИ TBEPДОГО ТЕЛА
   
| | | | |
| | | |
 03.05.2011   Карта сайта     Language По-русски По-английски
Новые материалы
Экология
Электротехника и обработка материалов
Медицина
Статистика публикаци


03.05.2011










doi:10.1016/j.ssi.2011.03.001 | How to Cite or Link Using DOI
Copyright © 2011 Elsevier B.V. All rights reserved.
Permissions & Reprints




Electrical conduction in (La0.97Sr0.03)2(Mo1 − xGax)2O9 − α ceramics


Jianhong Xua, Jinling Yina, Xiaowen Wanga, Hongtao Wanga and Guilin Malow asterisk, a, E-mail The Corresponding Author





a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China




Received 26 October 2010;


revised 11 January 2011;


accepted 1 March 2011.


Available online 22 March 2011.











Abstract



A novel series of ceramic samples (La0.97Sr0.03)2(Mo1 − xGax)2O9 − α (x = 0, 0.01, 0.03, 0.05, 0.08) were prepared by a solid-state reaction method. All the doubly doped ceramics have a single cubic structure except (La0.97Sr0.03)2(Mo0.92Ga0.08)2O9 − α. The conduction behaviors of the samples with x ≤ 0.05 were investigated using various electrochemical methods including gas concentration cells, oxygen electrochemical permeation and AC impedance spectroscopy in the temperature range of 823–1273 K. In dry oxygen-containing atmosphere, the ceramic samples were almost pure oxide-ionic conductors. In wet oxygen-containing atmosphere, the ceramic samples were also almost pure oxide-ionic conductors, but didn't possess the protonic conduction. The electrochemical oxygen permeation experiment further verified the oxide-ionic conduction nature under oxygen-containing atmosphere. The phase transition has been completely suppressed in the doubly doped samples in both dry and wet air atmospheres. The oxide-ionic conductivities were affected by the doping levels, and increased in the order: σ (x = 0.05) < σ (x = 0) < σ (x = 0.03) < σ (x = 0.01). (La0.97Sr0.03)2(Mo0.99Ga0.01)2O9 − α exhibited the highest oxide-ionic conductivity of 0.103 S cm−1 at 1273 K.











Research highlights



► A novel series of (La0.97Sr0.03)2(Mo1 − xGax)2O9 − α were prepared. ► The solubility limit of Ga in (La0.97Sr0.03)2(Mo1 − xGax)2O9 − α was at least x = 0.05. ► The samples were almost pure oxide-ionic conductors in oxygen-containing atmospheres. ► The phase transition has been completely suppressed in the doubly doped samples. ► The conductivities increased in the order: σ(x = 0.05) < σ(x = 0) < σ(x = 0.03) < σ(x = 0.01).





Дизайн и программирование N-Studio 
А Б В Г Д Е Ё Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я
  • Chen Wev .  honorary member of ISSC science council

  • Harton Vladislav Vadim  honorary member of ISSC science council

  • Lichtenstain Alexandr Iosif  honorary member of ISSC science council

  • Novikov Dimirtii Leonid  honorary member of ISSC science council

  • Yakushev Mikhail Vasilii  honorary member of ISSC science council

  • © 2004-2019 ИХТТ УрО РАН
    беременность, мода, красота, здоровье, диеты, женский журнал, здоровье детей, здоровье ребенка, красота и здоровье, жизнь и здоровье, секреты красоты, воспитание ребенка рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок медицина, клиники и больницы, болезни, врач, лечение, доктор, наркология, спид, вич, алкоголизм православные знакомства, православный сайт творчeства, православные рассказы, плохие мысли, православные психологи рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок