解:肖脱基缺陷:有空位,无间隙原子,原子逃逸到晶体外表面或内界面(晶界)。 弗仑克尔缺陷:同时形成等量的空位和间隙原子,空位和间隙原子对其数量远少于肖脱基(空位)缺陷。 点缺陷对晶体性质的影响: 点缺陷存在和空位运动,造成小区域的晶格畸变。 1)使材料电阻增加定向流动的电子在点缺陷处受到非平衡力,使电子在传导中...
解:肖脱基缺陷:有空位,无间隙原子,原子逃逸到晶体外表面或内界面(晶界)。 弗仑克尔缺陷:同步形成等量旳空位和间隙原子,空位和间隙原子对其数量远少于肖脱基(空位)缺陷。 点缺陷对晶体性质旳影响: 点缺陷存在和空位运动,导致小区域旳晶格畸变。 1)使材料电阻增长定向流动旳电子在点缺陷处受到非平衡力,使电子在传导中...
In Schottky defect, certain cations and anions are missing from the crystal lattice. Therefore, the density of the crystal decreases. However, in Frenkel defect, the ions do not leave the lattice but they simply change their positions from lattice points
In a schottky defect: View Solution Due of Frenkel defect View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths Cengage Solutions for Maths DC Pandey Solutions for Physics HC Verma Solutions for Physics ...
百度试题 结果1 题目在晶体中形成空位的同时又产生间隙原子,这样的缺陷称为___。 A.肖特基缺陷(Schottky defect)B.弗仑克尔缺陷(Frenkel defect)C.间隙缺陷(interstitial defect) 相关知识点: 试题来源: 解析 B 暂无解析 反馈 收藏
(a) A Schottky defect in Li₂O involves 2 Li⁺ cation vacancies and one O²⁻ anion vacancy (b) cation Frenkel defect (a) 肖特基缺陷是阳离子空位和阴离子空位成对出现的缺陷。Li₂O为Li⁺与O²⁻的离子化合物,其化合比为2:1。为保持电中性,形成1个O²⁻空位时需要同时形成2个...
Accordingly, the conventional rate theory is modified with account of radiation-induced Schottky defect formation at extended defects, which often acts against the mechanisms based on the Frenkel pair production in the crystal bulk. The theory is applied for the description of technologically and ...
the void which is analogous to the thermal void shrinkage at high temperatures, but it is expected to operate at low and medium temperatures and high sink densities, when the radiation-induced vacancy emission from sinks becomes comparable with the absorption of Frenkel defects produced in the ...
Answer to: Explain how the electrical conductivity of a crystal is affected by the Schottky and Frenkel defect. By signing up, you'll get thousands...
a. Schottky defect : It occurs when there is a vacancy of cation and anion sites in the lattice structure. b. Frenkel defect : It occurs in an ionic crystal when an ion occupies an interstitial position rather than normal site. c. Interstitials : Ato