2023   03   az   p.17-19 A.F. Kazymova1, V.I. Nasirov2,
Determination of atomic dynamics in RbNO3 crystals by Raman spectroscopy		  pdf 

ABSTRACT

In the present work, the structural-phase transitions in RbNO3 and its crystals of solid solutions were studied by the X-ray method, and to further enrich our studies, the atomic dynamics of the crystals was studied by the Raman spectroscopy method. It was established that the maxima in the spectrum were obtained at frequencies ν1= 106 см-1, ν2= 64 см-1, ν3= 724 см-1, ν4=1369 см-1. The results obtained by the method of Raman spectroscopy and comparable literature data indicate that the maxima determined at different frequencies are characteristic of alkali metal nitrates and their crystals of solid solutions.

Keywords: polymorphic transformation, radiographic, modification, isothermal, Raman spectroscopy
PACS: 61.50.Ks

DOI:-

Received: 04.09.2023

AUTHORS & AFFILIATIONS

1. Institute of Physics named after H.M.Abdullayev of the Ministry of Science and Education Republic of Azerbaijan, 131. H.Javid ave. Baku, AZ-1143, Azerbaijan
2. Azerbaijan Higher Naval School
E-mail: aygun-kazimova-1981@mail.ru

Graphics and Images

     

  Fig.1-2-3

 REFERENCIES

[1]   R.N. Brown, A.C. Mclaren. The thermal transformation in solid rubidium nitrate and tallium nitrate Acta Gryst., 15 p.977, 1962.
[2]   R.N. Brown, A.C. Mclaren. On the mechanism of the thermal transformation in solid rubidium. Proc. Roy. Sos. A266, p. 329, 1962.
[3]   U. Korhonen. On the crystal structure of the high temperature form of rubidium nitrate. Ann. Acad. Sci. Fennical., A1 p.37, 1951.
[4]   J. Pohl, D. Pohl, G. Adiwidjaja. Phase transition in RbNO3 at 346K and structure at 296, 372, 413 and 437K. Acta.Cryst.,1992, B48, p.160-166.
[5]   В.И. Насиров, А.Ф. Хазиева, Ю.Г. Асадов, А.С. Амиров, Ю.И. Алыев. «Получение кристаллов Rb0.90Cs0.10NO3 и их рентгенографические исследования». Кристаллография, 2012, Т.57, № 6, с. 964-967.
[6]   А.Ф. Хазиева, Ю.Г. Асадов, В.И. Насиров, Ю.И. Алыев., А.О. Дашдемиров., С.Г. Джабаров. Rb1-xCsxNO3 (x=0,025;0,05;0,1) монокристаллы и их исследование методом высокотемпературной рентгенографии. Физика и техника полупроводников, 2018, том 52, вып.6, стр.565-571.
[7]   Kangcheng Xu. Raman spectroscopic studies of phase equilibria in binary monovalent metal nitrates. Bibliography, 1997, Canada, 238-246.
[8]   Kangcheng Xu. Application of Raman in phase equilibrium studies: the structures of substitutional solid solutions of KNO3 by RbNO3. Journal of Materials Science, 1999, v.34, pp. 3447 -3453.