New Ferroelastic K2Sr(MoO4)2: Synthesis, Phase Transitions, Crystal and Domain Structures, Ionic Conductivity | Sciact - CRIS-system of Boreskov Institute of Catalysis

New Ferroelastic K2Sr(MoO4)2: Synthesis, Phase Transitions, Crystal and Domain Structures, Ionic Conductivity Full article

Journal

Journal of Solid State Chemistry
ISSN: 0022-4596 , E-ISSN: 1095-726X

Output data

Year: 2016, Volume: 237, Pages: 64-71 Pages count : 8 DOI: 10.1016/j.jssc.2016.01.011, 10.1002/chin.201624004

Tags

Crystal optics analysis; Crystal structure; Domain structure; Ferroelastics; Ionic conductivity; molybdates; Phase transitions; Potassium; Strontium

Authors

Tsyrenova Galina D. ^1,2 , Pavlova Erzhena T. ² , Solodovnikov Sergey F. ^3,4 , Popova Nadezhda N. ^1,3 , Kardash Tatyana Yu. ⁵ , Stefanovich Sergey Yu. ⁶ , Gudkova Irina A. ³ , Solodovnikova Zoya A. ³ , Lazoryak Bogdan I. ⁶

Affiliations

1	Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh’yanova St. 6, Ulan-Ude, 670047 Buryat Republic, Russia
2	Buryat State University, Smolin St. 24a, Ulan-Ude, 670000 Buryat Republic, Russia
3	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Acad. Lavrentyev Ave. 3, Novosibirsk 630090, Russia
4	Novosibirsk State University, Pirogov St. 2, Novosibirsk 630090, Russia
5	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Acad. Lavrentiev Ave. 5, Novosibirsk 630090, Russia
6	Department of Chemistry, Moscow State University, 119899 Moscow, Russia

Funding (4)

1	Russian Foundation for Basic Research	13-03-01020
2	Russian Foundation for Basic Research	11-03-90714
3	Russian Foundation for Basic Research	14-03-00298
4	The Ministry of Education and Science of the Russian Federation	3.6021.2011

K2Sr(MoO4)2 crystals were synthesized and their properties examined. The distortive polymorphic transformations at 421 K (α (LT)→ β(MT)) and 744 K (β(MT)→γ (HT)) of K2Sr(MoO4)2 were studied. It has been shown that the transitions go in sequence from the high-temperature palmierite K2Pb(SO4)2-type γ-phase (R3¯m) to an intermediate β-phase with a probable incommensurate structure and then to a low-temperature α-phase. Domain structures peculiarities in ferroelastic α-K2Sr(MoO4)2 have been investigated. The electrical conductivity of K2Sr(MoO4)2 rises tenfold in the vicinity of the phase transition at 744 K that may be associated with a change conductivity path from quasi-one-dimensional to two-dimensional. The crystal structure of the α-phase (sp. gr. C2/c, a=14.318(3) Å, b=5.9337(12) Å, c=10.422(2) Å, β=105.83(3)°, Z=4, R=0.0219) is similar to that of α-Pb3(PO4)2. Sr-atoms are mainly located at site with the coordination number CN=8 (a tetragonal antiprism with bond lengths of 2.578(2)-2.789(2) Å) and K atoms are located at site with CN=9+1.

Tsyrenova G.D. , Pavlova E.T. , Solodovnikov S.F. , Popova N.N. , Kardash T.Y. , Stefanovich S.Y. , Gudkova I.A. , Solodovnikova Z.A. , Lazoryak B.I.
New Ferroelastic K2Sr(MoO4)2: Synthesis, Phase Transitions, Crystal and Domain Structures, Ionic Conductivity
Journal of Solid State Chemistry. 2016. V.237. P.64-71. DOI: 10.1016/j.jssc.2016.01.011, 10.1002/chin.201624004 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Nov 19, 2015
Accepted:	Jan 18, 2016
Published online:	Jan 19, 2016
Published print:	May 1, 2016

Web of science:	WOS:000373661100010
Scopus:	2-s2.0-84955560086
Elibrary:	26853532
Chemical Abstracts:	2016:180535
Chemical Abstracts (print):	164:319745
OpenAlex:	W2287406511

DB	Citing
Web of science	21
Elibrary	17
Scopus	21
OpenAlex	24