ChemInform Abstract: NONLINEAR RAMAN STUDY OF LINE SHAPES AND RELAXATION OF VIBRATIONAL STATES OF ISOTOPICALLY PURE AND MIXED CRYSTALS OF BENZENE

1985 ◽  
Vol 16 (19) ◽  
Author(s):  
T. J. TROUT ◽  
S. VELSKO ◽  
R. BOZIO ◽  
P. L. DECOLA ◽  
R. M. HOCHSTRASSER
Keyword(s):  
Mixed Crystals ◽  
Vibrational States ◽  
Line Shapes ◽  
Raman Study

Nonlinear Raman study of line shapes and relaxation of vibrational states of isotopically pure and mixed crystals of benzene

1984 ◽  
Vol 81 (11) ◽  
pp. 4746-4759 ◽  
Author(s):  
T. J. Trout ◽  
S. Velsko ◽  
R. Bozio ◽  
P. L. Decola ◽  
Robin M. Hochstrasser
Keyword(s):  
Mixed Crystals ◽  
Vibrational States ◽  
Line Shapes ◽  
Raman Study

Raman study of the mixed crystals CuxAg1-xI

1986 ◽  
Vol 19 (15) ◽  
pp. 2663-2673 ◽  
Author(s):  
G Livescu ◽  
O Brafman
Keyword(s):  
Mixed Crystals ◽  
Raman Study

Raman study of 2H-Mo1−xWxS2 layered mixed crystals

2010 ◽  
Vol 506 (2) ◽  
pp. 940-943 ◽  
Author(s):  
D.O. Dumcenco ◽  
K.Y. Chen ◽  
Y.P. Wang ◽  
Y.S. Huang ◽  
K.K. Tiong
Keyword(s):  
Mixed Crystals ◽  
Raman Study

scholarly journals Exceptional Phonon Point Versus Free Phonon Coupling in Zn1-xBexTe Under Pressure: An Experimental and ab Initio Raman Study

2021 ◽  
Author(s):  
M. B. Shoker ◽  
T. Alhaddad ◽  
O. Pagès ◽  
V. J. B. Torres ◽  
A. V. Postnikov ◽  
...  
Keyword(s):  
Ab Initio ◽  
Mixed Crystals ◽  
Exceptional Point ◽  
Phonon Coupling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Point Versus ◽  
Raman Study ◽  
Effective Transfer

Abstract Raman scattering and ab initio Raman/phonon calculations, supported by X-ray diffraction, are combined to study the vibrational properties of Zn1-xBexTe under pressure. The dependence of the Be-Te (distinct) and Zn-Te (compact) Raman doublets that distinguish between Be- and Zn-like environments is examined within the percolation model with special attention to x~(0,1). The Be-like environment hardens faster than the Zn-like one under pressure, resulting in the two sub-modes per doublet getting closer and mechanically coupled. When a bond is so dominant that it forms a matrix-like continuum, its two submodes freely couple on crossing at the resonance, with an effective transfer of oscillator strength. Post resonance the two submodes stabilize into an inverted doublet shifted in block under pressure. When a bond achieves lower content and merely self-connects via (finite/infinite) treelike chains, the coupling is undermined by overdamping of the in-chain stretching until a phonon exceptional point is reached at the resonance. Only the out-of-chain vibrations "survive" the resonance, the in-chain ones are "killed". This picture is not bond-related, and hence presumably generic to mixed crystals of the closing-type under pressure (dominant over the opening-type), indicating a key role of the mesostructure in the pressure dependence of phonons in mixed crystals.

Comparison of 35Cl NQR Spectra between the Mixed Crystals K2Sn1-xRexCl6 and the Al3+ Doped Crystals K2SnCl6:Al3+

1998 ◽  
Vol 53 (6-7) ◽  
pp. 552-558 ◽  
Author(s):  
Y. M. Seo ◽  
J. Pelzl ◽  
C. Dimitropoulus
Keyword(s):  
Local Structure ◽  
Relaxation Times ◽  
Mixed Crystals ◽  
Cubic Phase ◽  
Dynamic Effects ◽  
Impurity Effects ◽  
Line Shapes ◽  
Quadrupole Resonance ◽  
35Cl Nqr ◽  
35Cl Nqr Spectra

Abstract35Cl Nuclear Quadrupole Resonance (NQR) has provided a valuable tool for investigating the local structure in mixed crystals K2S1-xRexCl6 and Al3+ doped crystals K2SnCl6:Al3+ . The measured NQR line shapes and relaxation times of both kinds of impurity containing crystals in the cubic phase of the host K2SnCl6 show markedly different impurity effects; static impurity effects in K2Sn1-x RexCl6 and dynamic effects in K2SnCl6 :Al3+ . The 35Cl NQR spectra of K2SnCl6:Al3+ near the transition temperature (Tc) indicate the presence of pretransition of the local structure in the high temperature cubic phase.

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