NDLI: Temperature investigations of Raman spectra of stoichiometric and congruent lithium niobate crystals

Content Provider	Springer Nature Link
Author	Sidorov, N. V. Kruk, A. A. Yanichev, A. A. Palatnikov, M. N. Mavrin, B. N.
Copyright Year	2014
Abstract	In the temperature range 100–450 K, we have investigated Raman spectra of congruent and stoichiometric LiNbO$_{3}$ crystals. We have found that, in this temperature range, frequencies and widths of all the spectral lines depend linearly on temperature. However, the width of the line that corresponds to vibrations of the A$_{1}$(TO) symmetry of Li$^{+}$ ions depends on temperature much more weakly than the width of the line that corresponds to vibrations of the A$_{1}$(TO) symmetry of Nb$^{5+}$ ions. This fact indicates that the anharmonicity of vibrations of Nb$^{5+}$ ions along the polar axis is much stronger compared to vibrations of Li$^{+}$ ions. It is likely that this anharmonicity is noticeably contributed by O$^{2−}$ ions, which are characterized by an anharmonic potential, vibrations of which, according to calculations from first principles, are mixed with vibrations of Nb$^{5+}$ ions. The anharmonicity of vibrations of O$^{2−}$ ions is evidenced by a strong temperature dependence of the width of the line that corresponds to vibrations of the A$_{1}$(TO) symmetry of O$^{2−}$ ions perpendicularly to the polar axis. We have found that the temperature dependence of the intensity of lines that correspond to fundamental vibrations is nonmonotonic. At the same time, the temperature dependence of the intensity of “superfluous lines” is strictly linear. It is likely that this behavior of the intensities of lines of fundamental vibrations is related to the occurrence of clusters and microstructures in the crystal structure.
Starting Page	560
Ending Page	571
Page Count	12
File Format	PDF
ISSN	0030400X
Journal	Optics and Spectroscopy
Volume Number	117
Issue Number	4
e-ISSN	15626911
Language	English
Publisher	Pleiades Publishing
Publisher Date	2014-10-12
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optics, Optoelectronics, Plasmonics and Optical Devices
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Optical homogeneity, defects, and photorefractive properties of stoichiometric, congruent, and zinc-doped lithium niobate crystals

Spectral separation of Cr$^{3+}$ optical centers in stoichiometric magnesium-doped lithium niobate crystals

Structural disorder and optical properties of congruent lithium niobate crystals doped with zink and boron

Photorefractive and Raman light scattering in lithium niobate ferroelectric crystal

Complex investigations of structural and optical homogeneities of low-photorefractivity lithium niobate crystals by the conoscopy and photoinduced and Raman light scattering methods

Spectroscopic properties of trivalent chromium ion in lithium niobate crystals

Investigation of optical homogeneity and photorefractive properties of lithium-niobate single crystals by the Raman-spectroscopy and laser-conoscopy methods

Raman spectra of lithium niobate crystals heavily doped with zinc and magnesium

Temperature effects in low-frequency Raman spectra of corticosteroid hormones

Temperature investigations of Raman spectra of stoichiometric and congruent lithium niobate crystals

Similar Documents

Optical homogeneity, defects, and photorefractive properties of stoichiometric, congruent, and zinc-doped lithium niobate crystals

Spectral separation of Cr$^{3+}$ optical centers in stoichiometric magnesium-doped lithium niobate crystals

Structural disorder and optical properties of congruent lithium niobate crystals doped with zink and boron

Photorefractive and Raman light scattering in lithium niobate ferroelectric crystal

Complex investigations of structural and optical homogeneities of low-photorefractivity lithium niobate crystals by the conoscopy and photoinduced and Raman light scattering methods

Spectroscopic properties of trivalent chromium ion in lithium niobate crystals

Investigation of optical homogeneity and photorefractive properties of lithium-niobate single crystals by the Raman-spectroscopy and laser-conoscopy methods

Raman spectra of lithium niobate crystals heavily doped with zinc and magnesium

Temperature effects in low-frequency Raman spectra of corticosteroid hormones

Temperature investigations of Raman spectra of stoichiometric and congruent lithium niobate crystals