Abstract
Observations of spin-lattice relaxation(1) have established the presence of vibrations localized at the site of each of several types of electron spin centers in dielectric solids. Even with the advent of Raman scattering of laser light and far infrared absorption techniques, there are some centers whose localized modes are being identified by spin relaxation. It is the purpose of this paper to discuss briefly several cases, including high frequency local modes, very low frequency resonance modes and one intermediate case which will be called gap modes. We will derive the frequency of the dominant localized vibrations in each case and note the evidence of strong anharmonicity. We omit the many interesting effects of Jahn Teller modes on spin relaxation.(2)
This work was supported in part by the ISAF Aerospaca Research Laboratory, WPAFB, Ohio.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
For a review of spin-lattice relaxation, an excellent collection of pertinent papers is contained in the convenient paperback volume by A.A. Manenkov and R. Orbach, “Spin-Lattice Relaxation in Ionic Solids”, Harper & Row, New York City (1966).
c.f. V.T. Hochli & T.L. Estle, Phys Rev. Lett 18, 128 (1967).
D.W. Feldman, R.W. Warren, and J.G. Castle Jr., Phys. Rev. 135, A470 (1964).
G.R. Wagner, J. Murphy, and J.G. Castle, Conference on II-V1 Semi-conducting Compounds, Brown University, September 6–8, 1967, proceedings to be published.
c.f. M. Balkanski, R.Beserman, & L.K. Vodopianov, this conference, paper C2.
D.W. Feldman, J.G. Castle, Jr., and J. Murphy, Phys. Rev 138, A1208 (1965). The CaF2 phonon spectrum has been reported by D. Cribier, B. Farnoux, and B. Jacrot in “Inelastic Scattering of Neutrons in Solids & Liquids” II p225, IAEA Vienna
J.G. Castle, Jr, D.W. Feldman, and G.R. Wagner, Bull. Am.Phys. Soc 11, 907 (1966).
D.W. Feldman, J.G. Castle, Jr., and G.R. Wagner, Phys. Rev. 145, 237 (1966).
R.L. Hartman, A.C. Daniel, J.S. Bennett and J.G. Castle, Jr., Bull Am Phys Soc 11, 313 (1966).
G. Peckham, Proc. Phys. Soc.(London) (1966).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1968 Springer Science+Business Media New York
About this chapter
Cite this chapter
Castle, J.G. (1968). Studies of Localized Modes by Spin-Lattice Relaxation Measurements. In: Wallis, R.F. (eds) Localized Excitations in Solids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-6445-8_39
Download citation
DOI: https://doi.org/10.1007/978-1-4899-6445-8_39
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4899-6218-8
Online ISBN: 978-1-4899-6445-8
eBook Packages: Springer Book Archive