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Rai, B. C.
- Point Asymmetry in Charge Shift Model for Electric Field Gradient in TCP Metals
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Authors
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1 Department of Physics, College Of Commerce, Patna., IN
1 Department of Physics, College Of Commerce, Patna., IN
Source
International Journal of Physics and Applications, Vol 5, No 1 (2013), Pagination: 25-32Abstract
Electric field gradient at nuclear site in the lattice of tetragonal close packed (TCP) metals such as Indium is computed using the theory developed on the pattern of the Charge Shift Model initiated for hexagonal close packed (hcp) lattice. Numerical results are obtained using FORTRAN programs developed by us for electric field gradient in Indium. A tabulation of lattice sums for electric gradient in this metal suggests that all the three nonequivalent sites under the charge shift ansatz do not simultaneously pass through null electric field gradient for the case when the tcp lattice of the element transforms to body centered cubic lattice with axial ratio unity. At least one non-equivalent electronic site in the frame work of the charge shift model lacks the point symmetry of tetragonal system and contributes an extra electric field gradient.Keywords
Lattice Sum, TCP Lattice, Electric Field Gradient, Indium, Charge Shift, Body Centered Cubic LatticeReferences
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Authors
Affiliations
1 P.G.Centre, Departmentof Physics, College Of Commerce, Patna., IN
1 P.G.Centre, Departmentof Physics, College Of Commerce, Patna., IN
Source
International Journal of Physics and Applications, Vol 5, No 1 (2013), Pagination: 33-39Abstract
Electric field gradient at nuclear site in the lattice of tetragonal close packed (TCP) system of metallic stannum (Sn) at nuclear site are computed at several temperatures using a model developedonthe pattern similar to the charge shift model initiated for hexagonal close packed lattice. Numerical results are obtained using FORTRAN programs developed by us.Keywords
Lattice Sum, TCP Lattice, Electric Field Gradient, Stannum, Charge Shift, Nuclear SiteReferences
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