Tweets mining using WIKIPEDIA and impurity cluster measurement

2010 ◽  
Author(s):  
Qing Chen ◽  
Timothy Shipper ◽  
Latifur Khan
Keyword(s):  
Impurity Cluster

Impurity cluster interaction in FCC metals studied by PAC

1981 ◽  
Vol 10 (1-4) ◽  
pp. 667-673 ◽  
Author(s):  
M. Deicher ◽  
O. Echt ◽  
E. Recknagel ◽  
Th. Wichert
Keyword(s):  
Fcc Metals ◽  
Cluster Interaction ◽  
Impurity Cluster

Photoluminescence due to impurity-cluster-bound exciton in highly doped and highly compensated Si

2015 ◽  
Vol 54 (11) ◽  
pp. 111304 ◽  
Author(s):  
Michio Tajima ◽  
Koji Tanaka ◽  
Sébastien Dubois ◽  
Jordi Veirman ◽  
Kei Nakagawa ◽  
...  
Keyword(s):  
Impurity Cluster

scholarly journals Влияние решеточного и спин-фононного вкладов на температурное поведение расщепления основного состояния Gd-=SUP=-3+-=/SUP=- в SrMoO-=SUB=-4-=/SUB=-

2018 ◽  
Vol 60 (2) ◽  
pp. 329
Author(s):  
А.Д. Горлов
Keyword(s):  
Impurity Center ◽  
Temperature Behavior ◽  
Positive Contribution ◽  
Spin Hamiltonian ◽  
Phonon Interaction ◽  
Epr Spectrum ◽  
State Splitting ◽  
Temperature Dependences ◽  
Impurity Cluster ◽  
Static Lattice

AbstractThe temperature behavior of the EPR spectra of the Gd^3+ impurity center in single crystals of SrMoO_4 in the temperature range T = 99–375 K is studied. The analysis of the temperature dependences of the spin Hamiltonian b _2 ^0 ( T ) = b _2( F ) + b _2( L ) and P _2 ^0 ( T ) = P _2( F ) + P _2( L ) (for Gd^157) describing the EPR spectrum and contributing to the Gd^3+ ground state splitting Δ E is carried out. In terms of the Newman model, the values of b _2( L ) and P _2( L ) depending on the thermal expansion of the static lattice are estimated; the b _2( F ) and P _2( F ) spin-phonon contributions determined by the lattice ion oscillations are separated. The analysis of b _2 ^0 ( T ) and P _2 ^0 ( T ) is evidence of the positive contribution of the spin-phonon interaction; the model of the local oscillations of the impurity cluster with close frequencies ω describes well the temperature behavior of b _2( F ) and P _2( F ).

scholarly journals NUMERICAL CALCULATION OF THE CHARGE STATE AND ELECTROSTATIC POTENTIAL OF A BINARY NANOCLUSTER STRUCTURE WITH SI2ZNS CELLS IN A CUBIC LATTICE OF CRYSTALLINE SILICON WITH A DIAMOND STRUCTURE

2020 ◽  
Vol 2020 (3) ◽  
pp. 140-147
Author(s):  
N Zikrillaev ◽  
◽  
F Shakarov ◽  
M Khaqqulov
Keyword(s):  
Numerical Calculation ◽  
Charge State ◽  
Electrostatic Potential ◽  
Crystalline Silicon ◽  
Electronic Configuration ◽  
Stable Configuration ◽  
Atomic Structures ◽  
Impurity Atoms ◽  
Base Matrix ◽  
Impurity Cluster

Numerical calculation of electronic and atomic structures of complex systems of crystalline and transitional nano- and micro-sizes by using quantum physical methods will make it possible to forecast new properties of crystalline silicon with various concentrations of clusters of impurity atoms, structural arrangement at lattice sites and types of clusters. The quantum-chemical method was used to calculate the required characteristics of the cell, i.e. the charge state and electrostatic potential for the base matrix of Si (silicon) and silicon with an impurity cluster consisting of 3 tetrahedral cells type- Si2ZnS in the base lattice of Si. Calculation of the electrostatic potential of the base lattice of Si, and silicon with an impurity cluster of Si2ZnS in the Si lattice revealed a noticeable change in the potential intensity at the cell sites. In the cluster, charge transfer occurs from S (sulfur) atoms to Zn (zinc) atoms. Zn atoms at sites acquire a negative charge while S atoms acquire a positive charge. In fact, the numerical calculation confirms the hypothesis that instead of completing its structure to the most stable electronic configuration ... s2p6, in certain cases the chalcogen atom can also donate some of its electrons to form a quasi-stable configuration ... sp3.

Theoretical analysis of impurity precipitation in nanopores in crystals. II: Kinetics of impurity cluster growth in pores

2013 ◽  
Vol 58 (3) ◽  
pp. 335-339
Author(s):  
M. N. Lubov ◽  
D. V. Kulikov ◽  
Yu. V. Trushin ◽  
O. Kurnosikov
Keyword(s):  
Theoretical Analysis ◽  
Cluster Growth ◽  
Kinetics Of ◽  
Impurity Cluster
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