Dislocation and Grain Boundary Energies in Si and Ge from an Anharmonic Bond Charge Model

1997 ◽  
Vol 7 (12) ◽  
pp. 2281-2292 ◽  
Author(s):  
H. Teichler ◽  
J. Wilder
Keyword(s):  
Grain Boundary ◽  
Charge Model ◽  
Bond Charge ◽  
Bond Charge Model

scholarly journals Lattice dynamics of II-VI materials using the adiabatic bond-charge model

1996 ◽  
Vol 53 (14) ◽  
pp. 9052-9058 ◽  
Author(s):  
B. D. Rajput ◽  
D. A. Browne
Keyword(s):  
Lattice Dynamics ◽  
Charge Model ◽  
Bond Charge ◽  
Bond Charge Model

Determination of electric field gradient parameters in tellurium

1976 ◽  
Vol 54 (16) ◽  
pp. 1692-1698 ◽  
Author(s):  
K. Hamilton ◽  
B. M. Powell ◽  
P. Martel
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Field Gradient ◽  
Inelastic Neutron Scattering ◽  
Mean Square Displacement ◽  
Inelastic Neutron ◽  
Charge Model ◽  
Bond Charge ◽  
Bond Charge Model

The relative intensities of the Mössbauer doublet in Te have been analysed at 4 K and 80 K by utilizing values of the mean square displacement tensor derived from inelastic neutron scattering measurements. The orientation β of the electric field gradient ellipsoid and its asymmetry parameter η have been determined. At 4 K, β = 90°, η = −0.17 and at 80 K, β = 92°, η = −0.48. A simple 'bond charge' model is proposed in an attempt to understand the discrepancy between these values of the electric field gradient parameters and those obtained theoretically by other authors.

Lattice dynamics of SiC polytypes within the bond-charge model

1994 ◽  
Vol 50 (18) ◽  
pp. 13401-13411 ◽  
Author(s):  
M. Hofmann ◽  
A. Zywietz ◽  
K. Karch ◽  
F. Bechstedt
Keyword(s):  
Lattice Dynamics ◽  
Charge Model ◽  
Bond Charge ◽  
Bond Charge Model
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