Study Of The Local Symmetry Properties Of Dy In The Metallic Compound, Lasb

Electron Spin Resonance study of Dy in LaSb single crystal indicates appreciable angular variation of the ESR linewidth at X band frequency. The data is interpreted in terms of a random stress model with possible local tetragonal distortions. © 1975.171012791283Stonchem, Shapes of Inhomogeneously Broadened Resonance Lines in Solids (1969) Reviews of Modern Physics, 41, p. 82Mackmahon, (1964) Phys. Rev., 134, p. A129Levy, (1969) Phys. Kond. Mat., 10, p. 85Bucher, Birgeneau, Maita, Felcher, Brun, (1972) Phys. Rev. Lett., 28, p. 746Moran, Thomas, Levy, Chen, (1973) Phys. Rev., 7 B, p. 3238Mullen, Lüthi, Wang, Bucher, Longinotti, Maita, (1974) Phys. Rev., 10 B, p. 186Levy, (1973) J. Phys., 6 C, p. 3545Feher, Kip, Electron Spin Resonance Absorption in Metals. I. Experimental (1955) Physical Review, 98, p. 377Davidov, Bucher, Rupp, Longinotti, Rettori, (1974) Phys. Rev., 9 B, p. 2879Altshuler, Kozyrev, (1972) Electron Paramagnetic Resonance, , See for example, 2nd Edn., Ch. V, MoscowLea, Leask, Wolf, The raising of angular momentum degeneracy of f-Electron terms by cubic crystal fields (1962) Journal of Physics and Chemistry of Solids, 32, p. 1381This value was estimated using extrapolated crystalline field parameters of PrSb, as explained below. The splitting, Δ, can be estimated also from the reduction of the g value in the [111] direction at Q-band frequencyCallen, Callen, Static Magnetoelastic Coupling in Cubic Crystals (1969) Physical Review, 129, p. 578. , see also, The connection between the magnetoelastic constant G(Γ3) in the notation of the present work and the analogue constant g2 in the notation of reference 5, is as follows: G(Γ3) = -g2[C0/6N]1/2 where C0 = C11 - C22 is the symmetric elastic constant and N is the number of ions per cubic centimeterThe possibility is unlikely because of the very large local deformation needed to produce such random strainsThe matrix elements in (4) are much smaller for Ce+3 but have the same order of magnitude for Yb+3 as compared to those calculated for Dy+3A useful discussion with Prof. S. Alexander concerning this point is gratefully acknowledge