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Applied Optics

Applied Optics


  • Vol. 11, Iss. 9 — Sep. 1, 1972
  • pp: 1924–1927

Raman Scattering Techniques Applied to Problems in Solid State Physics

I. W. Shepherd  »View Author Affiliations

Applied Optics, Vol. 11, Issue 9, pp. 1924-1927 (1972)

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A discussion of the application of Raman scattering to solid state problems is followed by a description of the experimental technique. A recent experiment is described in which the thickness of the domain wall in the strongly coupled ferroelectric–ferroelastic material gadolinium molybdate is found to be within the limits 0.8–3 μ. The Raman scattering from part of the wall volume is characteristic of the high temperature paraelectric phase.

© 1972 Optical Society of America

Original Manuscript: August 24, 1971
Published: September 1, 1972

I. W. Shepherd, "Raman Scattering Techniques Applied to Problems in Solid State Physics," Appl. Opt. 11, 1924-1927 (1972)

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  1. C. V. Raman, Indian J. Phys. 2, 387 (1928).
  2. A comprehensive collection of recent work is published in Light Scattering Spectra of Solids, Proceedings of the International Conference on Light Scattering, New York, G. B. Wright, Ed. (Springer Verlag, New York, 1968).
  3. P. A. Fleury, S. P. S. Porto, J. Appl. Phys. 39, 1035 (1968); S. R. Chinn et al., Phys. Rev. B3, 1709 (1971); P. A. Fleury, H. J. Guggenheim, Phys. Rev. Lett. 24, 1346 (1970). [CrossRef]
  4. C. Kittel, Solid State Commun. 10, 119 (1972). [CrossRef]
  5. H. J. Borchardt, P. E. Bierstedt, Appl. Phys. Lett. 8, 50 (1966). [CrossRef]
  6. W. K. Jeitschko, Naturwiss. 57, 544 (1970); Acta Crystallogr. B28, 60 (1972). [CrossRef]
  7. R. Loudon, Adv. Phys. 13, 423 (1964). [CrossRef]
  8. A decrease in the number of Raman modes is expected as the temperature increases through Tc due to the change of crystal symmetry and the halving of the unit cell. In fact, the total number of Raman active optical modes in the orthorhombic phase is 201 of which fifty have A1 symmetry; in the tetragonal phase, a total of sixty-four are allowed, fourteen of which have A1 symmetry. The author is indebted to E. Bromels for the group theoretical analysis.
  9. J. R. Barkley, L. H. Brixner, E. M. Hogan, R. K. Waring, to be published in Ferroelectrics as part of the Proceedings of the IEEE Symposium on Applications of Ferroelectrics (June1971).
  10. The use of highly convergent white light to observe a wall of minimum thickness was suggested by K. A. Haines.
  11. F. J. Baum, private communication.
  12. Observations made by K. A. Haines of this laboratory and B. L. Booth of the Engineering Physics Laboratory.
  13. B. L. Booth, du Pont Engineering Physics Laboratory; private communication.

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