dc.creator Yurtseven, H. en_US dc.creator Sherman, W. F. en_US dc.date.accessioned 2006-06-15T15:09:38Z dc.date.available 2006-06-15T15:09:38Z dc.date.issued 1992 en_US dc.identifier 1992-FB-12 en_US dc.identifier.uri http://hdl.handle.net/1811/12636 dc.description the tricritical (P$\mathop{}^{\rightarrow}\kern -10 pt{_\leftarrow} 1.6 kbar^{4}$) and in the second order (P$\mathop{}^{\rightarrow}\kern -10 pt{_\leftarrow}$2.8 kbar) phase region. Our Raman data indicate a small discontinuity accompanied with continuity in the frequency shifts at $\simeq$ 1.6 kbar (tricritical). At $\simeq$ 2.8 kbar this discontinuity seems to disappear as the system changes its phase from a first order to a second order one. The Raman spectra of the $TA_{M}$ ($93 cm^{-1}$) mode of $NH_{4}Cl$ are presented. en_US dc.description Author Institution: Department of Physics, Istanbul Technical University; Department of Physics, King's College London en_US dc.description.abstract The Raman spectra of $TA_{M}$ ($93 cm^{-1}$) lattice mode of $NH_{4}Cl$ were obtained as functions of temperature in en_US dc.format.extent 63391 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title RAMAN FREQUENCIES OF THE TA PHONON MODE OF $NH_{4}Cl$ CLOSE TO PHASE TRANSITIONS en_US dc.type article en_US
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