Temperature Dependence of the Ferroelectric Mode in KH2PO4

Phys. Rev. Lett. 20, 1105 – Published 13 May 1968
I. P. Kaminow and T. C. Damen

Abstract

Raman-scattering measurements on KH2PO4 reveal a broad, low-frequency ferroelectric mode which can be represented by a simple damped-harmonic-oscillator function. The resultant characteristic frequency and reciprocal zero-frequency susceptibility approach zero while the damping factor remains constant as T approaches Tc from above. At high T, the characteristic frequency approaches ∼99 cm-1 and the linewidth, ∼170 cm-1.

DOI: http://dx.doi.org/10.1103/PhysRevLett.20.1105

  • Received 14 March 1968
  • Published in the issue dated 13 May 1968

© 1968 The American Physical Society

Authors & Affiliations

I. P. Kaminow and T. C. Damen

  • Bell Telephone Laboratories, Holmdel, New Jersey

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