Effect of ZrO2 addition on crystallization and properties of the glass-ceramics contained NaNbO3 crystals

Crystallization and Dielectric Properties of Ferroelectric Glass-Ceramics Containing Sodium Niobate Crystals

“…LiTaO 3 nanocrystals in the Li 2 O-Ta 2 O 5 -SiO 2 -Al 2 O 3 glass system [4], NaNbO 3 crystals dispersed in a B 2 O 3 glass matrix [5], NaNbO 3 crystals in the Na 2 O-Nb 2 O 5 -SiO 2 system [6] and NaNbO 3 crystals in the Na 2 O-Nb 2 O 5 -SnO 2 -SiO 2 system [7]. Among the ferroelectric glass-ceramics, those ceramics containing sodium niobate (NaNbO 3 ) have the most influential material.…”

Crystallization and optical properties of Nd3+ doped ferroelectric glass-ceramics in the barium sodium niobosilicate system

“…01-074-2437) were identified as the main crystalline phases. Practically, NaNbO 3 crystal with perovskite structure is an important ferroelectric material for several applications [6], whereas the Ba 2 NaNb 5 O 15 crystal was characterized by a tungsten bronze structure with a complex connectivity array of the NbO 6 units and Ba 2 þ with accommodation of Na þ in the large available interstices [11].…”

“…This was in particular of the Na 2 O-BaO-Nb 2 O 5 -SiO 2 system that gave two successive ferroelectric phases, NaNbO 3 and Ba 2 NaNb 5 O 15 after devitrification [1][2][3][4]. Sodium niobate (NaNbO 3 ) is one of the perovskite families that normally show orthorhombic structure with antiferroelectric state at room temperature [5,6]. Meanwhile, barium sodium niobate (Ba 2 NaNb 5 O 15 ) belongs to the ferroelectric crystal family with tungsten bronze (TB) structure [7,8].…”

On the approach to Mott’s transition in glass-ceramic nanocomposite due to heat treatment

“…Glass-ceramic materials (so-called glass-ceramic nanocomposite with the size of crystallites smaller than 100 nm (nanocrystallites) which are still transparent like glass [1,3]. In the past few years, glass-ceramics containing ferroelectric crystals have received considerable interest, because of their easiness of preparation, promising dielectric, and excellent electro-optical properties [4,5]. Advantages in case of ferroelectric glass-ceramics include low levels of porosity and hence high breakdown voltages, this together gives the ability to develop different article shapes depending on the application required, with the least energy consumption and machining [4].…”

“…They inherit some structural features and transport properties from the nanocrystalline forms of V 2 O 5 and in particular of its -phase, being often cited as a model of an electronic conductor [8,9]. On the other hand, in recent years it has been established that the presence of fine grains of foreign phases distributed in moderately conducting matrices (glasses, but also polymer electrolytes or poly-crystalline materials) can significantly improve their conductivity [1][2][3][4][5][6][7][8][9][10].…”