Elastic properties of Rb4LiH3(SO4) 4 and K4LiH3(SO4)4

B. Mroz; H. Kiefte; M. J. Clouter; J. A. Tuszynski

doi:10.1088/0953-8984/3/30/001

Elastic properties of Rb₄LiH₃(SO₄) ₄ and K₄LiH₃(SO₄)₄

B. Mroz
, H. Kiefte
, M. J. Clouter
, J. A. Tuszynski

Department of Data Science and Engineering (RAU/RAU4)

Adam Mickiewicz University in Poznań

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

High-resolution Brillouin spectroscopy was used to study the elastic properties of Rb₄LiH₃(SO₄)₄ and K₄LiH₃(SO₄)₄ crystals. In contrast to earlier studies of the former compound, the present results indicate that the ferroelastic phase transition, which occurs at approximately 115 K, is of the 4 to 2 type rather than 4 mm to mm2 as previously believed. An appropriate theoretical model using a two-component order parameter free energy expansion has been presented based on the Landau theory. K₄LiH ₃(SO₄)₄ does not appear to be ferroelastic in the temperature range examined and only exhibits a slight change in slope of the temperature plots for elastic constants associated with longitudinal phonons.

Original language	English
Article number	001
Pages (from-to)	5673-5684
Number of pages	12
Journal	Journal of Physics Condensed Matter
Volume	3
Issue number	30
DOIs	https://doi.org/10.1088/0953-8984/3/30/001
Publication status	Published - 1991

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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title = "Elastic properties of Rb4LiH3(SO4) 4 and K4LiH3(SO4)4",

abstract = "High-resolution Brillouin spectroscopy was used to study the elastic properties of Rb4LiH3(SO4)4 and K4LiH3(SO4)4 crystals. In contrast to earlier studies of the former compound, the present results indicate that the ferroelastic phase transition, which occurs at approximately 115 K, is of the 4 to 2 type rather than 4 mm to mm2 as previously believed. An appropriate theoretical model using a two-component order parameter free energy expansion has been presented based on the Landau theory. K4LiH 3(SO4)4 does not appear to be ferroelastic in the temperature range examined and only exhibits a slight change in slope of the temperature plots for elastic constants associated with longitudinal phonons.",

author = "B. Mroz and H. Kiefte and Clouter, \{M. J.\} and Tuszynski, \{J. A.\}",

year = "1991",

doi = "10.1088/0953-8984/3/30/001",

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TY - JOUR

T1 - Elastic properties of Rb4LiH3(SO4) 4 and K4LiH3(SO4)4

AU - Mroz, B.

AU - Kiefte, H.

AU - Clouter, M. J.

AU - Tuszynski, J. A.

PY - 1991

Y1 - 1991

N2 - High-resolution Brillouin spectroscopy was used to study the elastic properties of Rb4LiH3(SO4)4 and K4LiH3(SO4)4 crystals. In contrast to earlier studies of the former compound, the present results indicate that the ferroelastic phase transition, which occurs at approximately 115 K, is of the 4 to 2 type rather than 4 mm to mm2 as previously believed. An appropriate theoretical model using a two-component order parameter free energy expansion has been presented based on the Landau theory. K4LiH 3(SO4)4 does not appear to be ferroelastic in the temperature range examined and only exhibits a slight change in slope of the temperature plots for elastic constants associated with longitudinal phonons.

AB - High-resolution Brillouin spectroscopy was used to study the elastic properties of Rb4LiH3(SO4)4 and K4LiH3(SO4)4 crystals. In contrast to earlier studies of the former compound, the present results indicate that the ferroelastic phase transition, which occurs at approximately 115 K, is of the 4 to 2 type rather than 4 mm to mm2 as previously believed. An appropriate theoretical model using a two-component order parameter free energy expansion has been presented based on the Landau theory. K4LiH 3(SO4)4 does not appear to be ferroelastic in the temperature range examined and only exhibits a slight change in slope of the temperature plots for elastic constants associated with longitudinal phonons.

UR - https://www.scopus.com/pages/publications/0342369104

U2 - 10.1088/0953-8984/3/30/001

DO - 10.1088/0953-8984/3/30/001

M3 - Article

AN - SCOPUS:0342369104

SN - 0953-8984

VL - 3

SP - 5673

EP - 5684

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 30

M1 - 001

ER -

Elastic properties of Rb₄LiH₃(SO₄) ₄ and K₄LiH₃(SO₄)₄

Abstract

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