Vibrational Relaxation in the Solid NaNO3–NaClO4, NaNO3–NaNO2, and Na2CO3–Na2SO4 Binary Systems

Vibrational Relaxation in the Solid NaNO3–NaClO4, NaNO3–NaNO2, and Na2CO3–Na2SO4 Binary... Molecular relaxation processes in the solid binary systems NaNO3–NaClO4, Na2CO3–Na2SO4, and NaNO3–NaNO2 have been studied by Raman spectroscopy. It has been shown that the relaxation time of the ν1(A) vibrational mode of the NO 3 - and CO 3 2- anions in the binary systems is shorter than that in individual (nitrate or carbonate) crystals. The increase in the relaxation rate can be accounted for by an additional mechanism for the relaxation of excited vibrational states of the anions in the binary systems. The mechanism involves the excitation of vibrations in a different anion (ClO 4 - , SO 4 2- or NO 2 - ) and the “generation” of a lattice phonon. This relaxation mechanism is possible when the difference in frequency between the vibrational modes involved corresponds to a region with a sufficiently high density of states in the phonon spectrum. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Inorganic Materials Springer Journals

Vibrational Relaxation in the Solid NaNO3–NaClO4, NaNO3–NaNO2, and Na2CO3–Na2SO4 Binary Systems

Loading next page...
 
/lp/springer_journal/vibrational-relaxation-in-the-solid-nano3-naclo4-nano3-nano2-and-MBVMdPN704
Publisher
Pleiades Publishing
Copyright
Copyright © 2018 by Pleiades Publishing, Ltd.
Subject
Chemistry; Inorganic Chemistry; Industrial Chemistry/Chemical Engineering; Materials Science, general
ISSN
0020-1685
eISSN
1608-3172
D.O.I.
10.1134/S0020168518030020
Publisher site
See Article on Publisher Site

Abstract

Molecular relaxation processes in the solid binary systems NaNO3–NaClO4, Na2CO3–Na2SO4, and NaNO3–NaNO2 have been studied by Raman spectroscopy. It has been shown that the relaxation time of the ν1(A) vibrational mode of the NO 3 - and CO 3 2- anions in the binary systems is shorter than that in individual (nitrate or carbonate) crystals. The increase in the relaxation rate can be accounted for by an additional mechanism for the relaxation of excited vibrational states of the anions in the binary systems. The mechanism involves the excitation of vibrations in a different anion (ClO 4 - , SO 4 2- or NO 2 - ) and the “generation” of a lattice phonon. This relaxation mechanism is possible when the difference in frequency between the vibrational modes involved corresponds to a region with a sufficiently high density of states in the phonon spectrum.

Journal

Inorganic MaterialsSpringer Journals

Published: Mar 14, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off