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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
Affiliations
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 Lattice
References
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- H.C. Verma and G.N. Rao, Phys. Lett. A82 303(1981)
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- S.N. Gupta, A. Anand, S. Chandra and B.C. Rai, J.Phy.Sc. vol 12 no. 1159 (2010)
- H.C. Verma, B.kumar, B.C. Rai and S. Chandra, Hyp. Int. 52 97 (1989)
- F.W.de Wette, Phys. Rev. 123, 1 (1961)
- D.P.Verma, A.Yadav and H.C.Verma, Pramana 21 357(1983)
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- Electric Field Gradient in Stannum-II
Abstract Views :431 |
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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
- . T.P.Das,PhysicaScripta 11, 12 (1975)
- . Mahapatra N.C,Patnaik P.C., Thomson M.D, Das T.P. Phys. Rev. B16 30001(1977)
- . E. Bodenstedt and B Parscheid, Hyp. Int. 5 291(1978)
- . H.C. Verma and G.N. Rao, Phys. Lett. A82 303(1981)
- . S. Chandra and H.C. Verma, Phys. St. Sol. B K73 131(1985)
- . S.N.Gupta, G.Verma and H.C Verma, Pramana 23 39 (1984)
- . S.Chandra and H.C.Verma, Phys. Rev. B34 9(1986)
- . S.Chandra and H.C.Verma, Phys. St. Sol.(b) 145(1988)K1
- . S.N.Gupta,A.Anand,S.Chandra and B.C.Rai,J.Phy.Sc. vol 2, no.1,159-162 (2010)
- . S.N.Gupta, A.Anand, S. Chandra and B. C. Rai,J. Phy. Sc.vol 2, no.2, 35- 38(2010).
- . H.C.Verma,B. Kumar,B.C.Rai and S.Chandra, Hyp. Int. 52 97 (1989)
- . F.W.de Wette,Phys. Rev. 123,1 (1961)
- . D.P.Verma,A.Yadav and H.C.Verma, Pramana 21 357(1983)
- . D.P.Verma,B.Kumar and H.C.Verma, Pramana25 211 (1985)
- . T.P.Das and R.Bersohn, Phys. Rev. 102 733 (1965)
- R.M.Sternheimer,Phys. Rev. 130 (1963)1423, Phys. Rev. 159,2(1967)
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- J.Christiansen,P. Heubes, R. Keitel, W.Loeffler,W.Sandner and W. Wittihun, Z.Phys. B24177(1976)
- Electric Quadrupole Moment of Nuclei in TCP Metals
Abstract Views :443 |
PDF Views:2
Authors
Affiliations
1 P.G.Centre, Department of Physics, College of Commerce, Patna., IN
1 P.G.Centre, Department of Physics, College of Commerce, Patna., IN
Source
International Journal of Pure and Applied Physics, Vol 9, No 1 (2013), Pagination: 51-56Abstract
Nuclear quadrupole moments are derived using nuclear quadrupole coupling constants and electric field gradients (EFG) at nuclear site in the lattice of tetragonal close packed (TCP) metals such as stannum (119Sn). EFG are obtained 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
TCP Lattice, Electric Field Gradient, Nuclear Quadrupole Moment, Charge ShiftReferences
- T.P.Das, PhysicaScripta 11, 12 (1975)
- Mahapatra N.C, Patnaik P.C., Thomson M.D, Das T.P. Phys. Rev. B16 30001(1977)
- E. Bodenstedt and B Parscheid, Hyp. Int. 5 291(1978)
- H.C. Verma and G.N. Rao, Phys. Lett. A82 303(1981)
- S. Chandra and H.C. Verma, Phys. St. Sol. B K73 131(1985)
- S.N.Gupta, G.Verma and H.C Verma, Pramana 23 39 (1984)
- S.Chandra and H.C.Verma, Phys. Rev. B34 9(1986)
- S. Chandra and H.C.Verma, Phys. St. Sol.(b) 145(1988)K1
- S.N. Gupta, A. Anand, S.Chandra and B.C.Rai, J.Phy.Sc. vol 2, no.1, 159-162 (2010)
- S.N.Gupta, A.Anand, S. Chandra and B. C. Rai, J. Phy. Sc.vol2, no.2, 35-38(2010).
- H.C.Verma, B. Kumar, B.C.Rai and S.Chandra, Hyp. Int. 52 97 (1989)
- B C Rai and A Kumar, I J P A, ISSN 0974-3103 vol 5, no. 1, 25-32(2013)
- B C Rai, I J P A, ISSN 0974-3103 vol 5, no. 1, 33-39 (2013)
- G.S. Collins and N. Benczer-Koller, Phy Rev B, vol 17, no. 5, (1978)
- T.P. Das and R. Bersohn, Phys. Rev. 102 733 (1965)
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- W.P. Massion and H. Bomel, J. Acous. Soc. Am 28, 930 (1956)
- J.Christiansen, P. Heubes, R. Keitel, W.Loeffler, W.Sandner andW. Wittihun, Z.Phys. B24177(1976).