- Код статьи
- S0424857025030018-1
- DOI
- 10.31857/S0424857025030018
- Тип публикации
- Статья
- Статус публикации
- Опубликовано
- Авторы
- Том/ Выпуск
- Том 61 / Номер выпуска 3
- Страницы
- 172-179
- Аннотация
- Впервые синтезированы высокоэнтропийный состав (Mg0.2Zn0.2Ni0.2Co0.2Mn0.2)Nb2O6 со структурой колумбита и его Ti-замещенный состав (5%). Синтез проведен модифицированным методом сжигания растворов с последующим высокотемпературным спеканием. Методами рентгенофазового анализа и сканирующей электронной микроскопии проведена аттестация образцов. По данным диффузных спектров отражения рассчитана ширина запрещенной зоны прямого разрешенного электронного перехода (Egпр ≈ 2.98–3.05 эВ). Твердые растворы характеризуются преимущественно электронной проводимостью. Замещение катионами титана приводит к увеличению проводимости на 1.2 порядка в области температур 160–750°C.
- Ключевые слова
- высокоэнтропийный состав структура колумбита ширина запрещенной зоны проводимость
- Дата публикации
- 17.09.2025
- Год выхода
- 2025
- Всего подписок
- 0
- Всего просмотров
- 14
Библиография
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