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The effective bond charge in alkali halides - another manifestation of the crystals ionicity

W. Kucharczyk, F.L. Castillo Alvarado, P. Górski, R. Ledzion

Source

Journal of Physics and Chemistry of Solids > 2001 > 62 > 4 > 761-765

Abstract

The effective bond charge q e f f , as determined from experimental values of the third-order optical susceptibility in alkali halides, is analyzed. The correlations of q e f f with the ratio of the cation to anion radius, lattice constant and Szigeti effective charge are taken into account. The relationships between q e f f and other parameters describing the ionicity show that the magnitude of q e f f can be considered as one more parameter related to the ionicity of the crystals.

Identifiers

journal ISSN : 0022-3697

Authors

W. Kucharczyk

  • Institute of Physics, Technical University of Lódź, Wólczańska 219, 93-005 Lódź, Poland

F.L. Castillo Alvarado

  • Escuela Superior de Fisica y Matematicas, Instituto Politechnico National, Edificio 6 UPLAM, Delegado G.A.Madero, 07738 Mexico District Federal, Mexico

P. Górski

  • Institute of Physics, Technical University of Lódź, Wólczańska 219, 93-005 Lódź, Poland

R. Ledzion

  • Institute of Physics, Technical University of Lódź, Wólczańska 219, 93-005 Lódź, Poland

Keywords

Additional information

Publication languages: angielski
Data set: Elsevier

Publisher

Elsevier Science

Bibliography

  • [1], Levine B.F., Bond-charge calculation of nonlinear optical susceptibilities for various crystal structures, Phys. Rev. B 7, 1973, 2600 - 2626

  • [2], Xue D.F., Zhang S.Y., Comparison of nonlinear optical susceptibilities of KNbO, 3 and LiNbO, 3, J. Phys. Chem. Solids 58, 1997, 1399 - 1402

  • [3], Xue D.F., Zhang S.Y., Calculation of nonlinear optical coefficients of orthorhombic Re, 2(MoO, 4), 3 crystals, J. Phys. Chem. Solids 59, 1998, 1337 - 1341

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