【摘 要】
:
Potassium tantalate niobate(KTa1-x NbxO3,KTN)crystals with different dimensions and quality situations were grown by Czochralski method.Crystal growth process a
【机 构】
:
State Key Laboratory of Crystal Materials
【基金项目】
:
国家重点基础研究发展计划(973计划)
论文部分内容阅读
Potassium tantalate niobate(KTa1-x NbxO3,KTN)crystals with different dimensions and quality situations were grown by Czochralski method.Crystal growth process and morphology properties of KTN are presented in this paper.It was found that some defects,such as bubble,inclusion,crack,dislocation etc.,can all appear if the crystal is grown in an improper condition.The character and formation mechanism of such defects in macro growth are discussed.We consider that the CO2,which Was not released absolutely during the sintering process and dissolved in the melt,led to bubbles.The composition of the inclusion caused by high pulling and rotation rates is KTN polycrystalline.The crack and dislocation in KTN crystal mainly come from improper temperature field.Etching and high-resolution X-ray diffraction(HRXRD)experiment results indicate that the central area is the defects concentrated.
其他文献
A novel charring agent, bis(1-oxo-4-hydroxymethyl-2,6,7-trioxa-l-phosphabicyclo[2.2.2]octane) phenylphosphine sulfide (BCPPS), has been synthesized, and it is c
New hydrophobic poly(phthalazinone ether sulfone ketone) (PPESK) hollow fiber composite membranes were obtained by surface-coated modification method.
It is well known that 802.11 suffers from both inefficiency and unfairness in the face of competition and interference. This paper provides a detailed analysis
A detailed analysis of benzofuranone compounds under multiple tandem mass spectrometry (ESI-MS(n)) conditions is reported. Element composition data of the fragm
1 IntroductionRosolic acid, also called as resinous acid, is a trihydroxyphenyl methane dye mainly used as an oxidation resistant indicator in acid-base titrati
Three Bi-doped vanadyl pyrophosphate catalysts were prepared via dihydrate route(VPD method),which consisted of different preparation methods including mechanos
Data reconciliation considers the restoration of mass balance among the noise prone measured data by way of component adjustments for the various particle size
Grouping nodes gives better performance to the whole network by diminishing the average network delay and avoiding unnecessary message for warding and additiona
The effects of three organic colorants on photo-initiated crosslinking and photo-oxidation degradation of polyethylene (PE) samples irradiated by microwave exci
The allocation of bandwidth to unlicensed users, without significantly increasing the interference on the existing licensed users, is a challenge for Ultra Wide