Phase Transitions and Fundamental Ferroelectric Dispersion in DMAAl_{1-x}Cr_{x}S Crystals

• Authors: V. Kapustianyk , Yu. Eliyashevskyy , Z. Czapla , S. Dacko , O. Czupiński , V. Rudyk , R. Serkiz , S. Sereda , S. Semak
• Languages of publication: EN

Abstracts

EN

This paper presents the results of investigations of the temperature dependence of heat capacity and dielectric dispersion in the vicinity of ferroelectric-ferroelastic phase transition of dimethylammonium metal sulphate hexahydrate crystals DMAAl_{1-x}Cr_{x}S. In particular, it is shown that the isomorphous substitution of metal ion noticeably changes the temperature of phase transition and parameters of the fundamental ferroelectric dispersion observed around T_{c1}. These changes are explained in terms of clusters sizes and dynamics in the framework of order-disorder type phase transition mechanism.

Keywords

EN

77.84.-s; 77.80.B-; 77.22.Gm; 65.40.Ba

Discipline

• 77.22.Gm: Dielectric loss and relaxation
• 77.80.B-: Phase transitions and Curie point(for Curie point in ferromagnetic materials, see 75.30.Kz)
• 77.84.-s: Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials(for nonlinear optical materials, see 42.70.Mp; for dielectric materials in electrochemistry, see 82.45.Un)
• 65.40.Ba: Heat capacity(for specific heat of magnetic materials, see 75.40.-s)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 3
• Pages: 791-794

Dates

published

2015-03

received

2014-04-28

(unknown)

2015-01-21

Contributors

author

V. Kapustianyk

• Physical Department and Scientific-Technical and Educational Center of Low-Temperature Studies, Ivan Franko National University of Lviv, Dragomanova 50, UA-79005 Lviv, Ukraine

author

Yu. Eliyashevskyy

• Physical Department, Ivan Franko National University of Lviv, Dragomanova 50, UA-79005 Lviv, Ukraine

author

Z. Czapla

• Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland

author

S. Dacko

• Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland

author

O. Czupiński

• Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland

author

V. Rudyk

• Scientific-Technical and Educational Center of Low-Temperature Studies, Ivan Franko National University of Lviv, Dragomanova 50, UA-79005 Lviv, Ukraine

author

R. Serkiz

• Scientific-Technical and Educational Center of Low-Temperature Studies, Ivan Franko National University of Lviv, Dragomanova 50, UA-79005 Lviv, Ukraine

author

S. Sereda

• Scientific-Technical and Educational Center of Low-Temperature Studies, Ivan Franko National University of Lviv, Dragomanova 50, UA-79005 Lviv, Ukraine

author

S. Semak

• Physical Department, Ivan Franko National University of Lviv, Dragomanova 50, UA-79005 Lviv, Ukraine

References

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Identifiers

DOI

10.12693/APhysPolA.127.791