Some characteristic features of formation of composite material based on KDP single crystal with incorporated Al₂O₃·nH₂O nanoparticles

Abstract

Composite material based on KDP (KH2PO4) crystal matrix with incorporated aluminum oxyhydroxide Al2O3·nH2O nanoparticles is obtained and peculiarities of the formation of KDP:Al2O3·nH2O composite structure are studied by selective etching, optical and scanning electron microscopy. Influence of the nanoparticles on the formation of defect subsystem is analyzed. The obtained material is shown to have a zonal structure with a period independent of the concentration of nanoparticles. By means of FTIR‐spectroscopy, interaction of nanoparticles with KH2PO4 solution is studied. A model of the capture of nanoparticles by the {100} KDP crystal face is proposed.

Efficient Occlusion of Nanoparticles within Inorganic Single Crystals

“…2 Therefore, scientists have sought a fundamental understanding of biomineralization with the aim of mimicking this strategy for the design of next-generation nanocomposite materials. [3][4][5][6] The interaction of water-soluble polymers with growing crystals is well-known and has been intensively studied. 7 However, the efficient uniform occlusion of nanoparticles within inorganic crystals is a formidable technical challenge.…”

“…Remarkable improvements in mechanical properties can be achieved even with relatively low levels of organic additives . Therefore, scientists have sought a fundamental understanding of biomineralization with the aim of mimicking this phenomenon for the design of next-generation nanocomposite materials. − …”

Dielectric Phenomena at Phase Transition Temperature of Nanocomposites Based on Ferroelectrics and Nanocrystalline Cellulose Acetobacter Xylinum

“…undergo significant changes. Particularly, the temperature of the phase transitions to polar state in these nanostructures changes significantly as compared to homogeneous bulk ferroelectrics [1][2][3][4][5][6][7]. The shift of Curie point of the ferroelectric composites in dependence on the material type and the sizes of components can reach up to several tens of degrees.…”

Низко- И Инфранизкочастотная Дисперсия Диэлектрической Проницаемости В Матричном Композите Нанокристаллическая Целлюлоза-Триглицинсульфат

“…В таких материалах значительным изменениям, в первую очередь, подвергается сама температура фазового перехода в полярное состояние по сравнению с объемными сегнетоэлектриками [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. В зависимости от материалов и размеров компонент сдвиг точки Кюри в композитных сегнетоэлектриках может достигать нескольких десятков градусов.…”

“…До последнего времени для создания матричных сегнетоэлектрических композитов использовали в основном матрицы пористого оксида алюминия, кремния, стекла, опала [1][2][3][5][6][7][8][9][10][11][12][13][14][15][16][17]. В работах [5,19] нами впервые приведены результаты исследований диэлектрических свойств матричных композитов на основе нанокристаллической целлюлозы (NCC) в качестве матрицы и триглицинсульфата (TGS) в качестве сегнетоэлектрического включения.…”