Vacancy type defect study in Fe-B-Si and Fe2O3 nanocomposites alloys by diffusion trapping model

2016 ◽  
Author(s):  
V. Rathore ◽  
M. K. Rathore
Keyword(s):  
Type Defect ◽  
Trapping Model ◽  
Vacancy Type Defect

Modulation of the Dielectric Properties of CaCu3Ti4O12 System with Gd-Substitution

2017 ◽  
Vol 373 ◽  
pp. 213-216 ◽  
Author(s):  
Zhen Ping Chen ◽  
Hui Fang He ◽  
Tao Li ◽  
Hai Yang Dai ◽  
Zhi Quan Chen
Keyword(s):  
Grain Size ◽  
Dielectric Properties ◽  
Positron Annihilation ◽  
Defect Concentration ◽  
Doping Content ◽  
Type Defect ◽  
Vacancy Type Defect

To specify the effects of modulating mechanism of Gd substitution on the dielectric properties for Ca1-xGdxCu3Ti4O12 system, the XRD, SEM and positron positron annihilation technique have been implemented. The results display that both grain size and vacancy-type defect concentration play important roles in controlling the dielectric properties of CaCu3Ti4O12. The dielectric properties are improved by adding an appropriate amount of Gd additives (x=0.01) but weakened by higher Gd doping content since this is closely related to the grain size and concentration of vacancy-type defect in the samples.

Annealing of a Vacancy-Type Defect and Diffusion of Implanted Boron in 6H-SiC

2003 ◽  
Vol 433-436 ◽  
pp. 633-636 ◽  
Author(s):  
Takeshi Ohshima ◽  
Akira Uedono ◽  
Osamu Eryu ◽  
Kin Kiong Lee ◽  
Koji Abe ◽  
...  
Keyword(s):  
Type Defect ◽  
And Diffusion ◽  
Vacancy Type Defect

scholarly journals Vacancy type defect formation in irradiated α-iron investigated by positron beam Doppler broadening technique

2014 ◽  
Vol 505 ◽  
pp. 012018 ◽  
Author(s):  
C W He ◽  
K Dawi ◽  
C Platteau ◽  
M F Barthe ◽  
P Desgardin ◽  
...  
Keyword(s):  
Defect Formation ◽  
Positron Beam ◽  
Doppler Broadening ◽  
Type Defect ◽  
Vacancy Type Defect

Ab Initio Calculation of Cobalt Interlayer Size Influence on Tensile Strength in WC-Co Hard Alloy

2014 ◽  
Vol 213 ◽  
pp. 86-89
Author(s):  
Anton Gnidenko
Keyword(s):  
Tensile Strength ◽  
Ab Initio ◽  
Hard Alloy ◽  
Defect Formation ◽  
Quantum Mechanical ◽  
Quantum Mechanical Calculations ◽  
Type Defect ◽  
Vacancy Type Defect

Quantum-mechanical calculations were performed for investigation of tensile strength for WC/Co/WC systems with the thickness of the cobalt interlayer of 3 and 7 atomic layers. It has been shown that the cobalt interlayer increasing leads to decreasing of the tensile strength from 17 GPa to 14 GPa. In addition, vacancy-type defect formation reduces the tensile strength of about 2 times.

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