Hydrothermally synthesized first acentric apatite (Bi5Na5)[PO4]6Cl2  with wide Bi–Na isomorphism and doubled c-axis

Belokoneva, E.L.; Volkov, A.S.; Dimitrova, O.V.; Stefanovich, S.Y.; Govorko, N.B.

Авторы: Belokoneva Elena L., Volkov Anatoly S., Dimitrova Olga V., Stefanovich Sergey Yu, Govorko Nadezhda B.
Журнал: New Journal of Chemistry
Том: 48
Номер: 17
Год издания: 2024
Издательство: Royal Society of Chemistry
Местоположение издательства: United Kingdom
Первая страница: 7940
Последняя страница: 7945
DOI: 10.1039/d4nj00480a
Аннотация: New acentric bismuth-sodium apatite (Bi5Na5)[PO4]6Cl2 with doubled c-axis and space group P-6, is obtained first in mild hydrothermal conditions in excess of NaCl in solution. Structural determination was carried out on single crystal, and new apatite demonstrates wide heterovalence isomorphic substitution Bi3+-Na+ in large cation positions. This fact determines doubling of c-axis and new space group P-6 compared with other widely known apatites. Non-centrosymmetry of the structure agrees with a distinct effect of optical second harmonic generation, but the SHG intensity is small due to proximity to the parent centrosymmetric apatite structure as well as lack of phase matching for SHG and YAG:Nd laser emission. From the structural point of view, optical nonlinearity is determined by difference in isomorphic occupation of positions by large cations with a slight deviation from the centrosymmetry of the whole structure. Disordered structural variants of isomorphic apatites are predicted, group-subgroup relation is found for three apatite varianst: well known and two new.
Добавил в систему: Стефанович Сергей Юрьевич

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ИНХС РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ИНХС РАН

Hydrothermally synthesized first acentric apatite (Bi5Na5)[PO4]6Cl2 with wide Bi–Na isomorphism and doubled c-axisстатья

Прикрепленные файлы