Study of Ferroelectric Transitions of Solid-Solution Single Crystals of KNbO3-KTaO3

Paramagnetic point and pair defects in oxide perovskites

“…It justifies an assumption of wemple [48] in deriving the D = 1.4 P 2 formula from polarization-induced strain only, neglect- [55].…”

Structural evolution of the KTa0.6Nb0.4O3 alkoxide-based solutions: probing the transition metals local environment by X-ray absorption spectroscopy

“…Compositional heterogeneities within the material lead to a strong deterioration of the properties, therefore a control of compositional homogeneity during the processing is essential. [1,2] The paraelectric-ferroelectric transition temperature of K(Ta,Nb)O 3 varies by changing the Ta/Nb ratio in the temperature interval from 0 K to 708 K. [3] Tarich compositions, with the transition temperatures below the room temperature, can be used in microwave devices, and the KTa 0.6 Nb 0.4 O 3 composition was considered for such applications, analogous to the widely studied Sr-rich (Ba,Sr)TiO 3 solid solutions. [4] The material was studied also as a model ferroelectric solid solution.…”

Growth of Device Quality Bulk Single Crystal of Pb-K-Niobate (PKN) for SAW (Surface Acoustic Wave)-Devices and Electro-Optical Applications.

“…Both these parameters are dictated by the well established phase diagram of the KNbO 3 -KTaO 3 system [11]. By adopting the usual practice of charge preparation-appropriate mass ratio of K 2 CO 3 :Nb 2 O 5 :Ta 2 Os, grinding, solid state reaction.…”

“…Since its discovery [11,12) various efforts were made for the synthesis of KTN single crystal using techniques such as Kyropoulos. Pfann, TSSG and ACRT.…”