The widths of lattice and internal Raman lines in ferroelectric NaNO2 were measured in the temperature interval 4-200 K. Calculations of the double-vertex self-energy series based on an atom/atom and charge/charge potential agree well with observations. A better fit of data is obtained if anharmonic constants are treated as adjustable parameters.
Raman linewidths in ferroelectric NaNO2 / G. F. SIGNORINI; M. BECUCCI; E. CASTELLUCCI. - In: CHEMICAL PHYSICS. - ISSN 0301-0104. - STAMPA. - 187:(1994), pp. 263-273.
Raman linewidths in ferroelectric NaNO2
SIGNORINI, GIORGIO FEDERICO;BECUCCI, MAURIZIO;CASTELLUCCI, EMILIO MARIO
1994
Abstract
The widths of lattice and internal Raman lines in ferroelectric NaNO2 were measured in the temperature interval 4-200 K. Calculations of the double-vertex self-energy series based on an atom/atom and charge/charge potential agree well with observations. A better fit of data is obtained if anharmonic constants are treated as adjustable parameters.
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