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

Katedra Inżynierii i Analizy Eksploracyjnej Danych (RAU/RAU4)

Adam Mickiewicz University in Poznań

Wyniki badań: Wkład do czasopisma › Artykuł › recenzja

19 Cytowania z bazy Scopus

Abstrakt

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.

Język oryginału	angielski
Numer artykułu	001
Strony (od–do)	5673-5684
Liczba stron	12
Czasopismo	Journal of Physics Condensed Matter
Tom	3
Numer wydania	30
Identyfikatory DOI	https://doi.org/10.1088/0953-8984/3/30/001
Status publikacji	Opublikowano - 1991

Obszary tematyczne ASJC Scopus

Materiałoznawstwo ogólne
Fizyka materii skondensowanej

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10.1088/0953-8984/3/30/001

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Cytowanie

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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

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

M3 - Article

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SN - 0953-8984

VL - 3

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EP - 5684

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

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