PL EN


Preferences help
enabled [disable] Abstract
Number of results
1993 | 83 | 6 | 777-784
Article title

Birefringent and Dielectric Properties of [N(C_{2}H_{5})_{4}]_{2}ZnBr_{4} and [N(C_{2}H_{5})_{4}]_{2}CdBr_{4} Crystals

Content
Title variants
Languages of publication
EN
Abstracts
EN
Dielectric and birefringent properties of [N(C_{2}H_{5})_{4}]_{2}ZnBr_{4} and [N(C_{2}H_{5})_{4}]_{2}CdBr_{4} crystals were investigated. It has been ascertained that two phase transitions manifest themselves in the temperature dependencies є(T) for [N(C_{2}H_{5})_{4}]_{2}CdBr_{4} crystal - a second-order transition at T_{1} = 311 K and a first-order one - at T_{2} = 39 K (∆T_{2} = 11 K). Besides two earlier known phase transitions in [N(C_{2}H_{5})_{4}]_{2}ZnBr_{4} at T_{1} = 350 K and T^{cool}_{2} = 282.8 K (∆T_{2} ≈ 2.3 K), the additional one was found at T*_{2} = 287.0 K, both on the cooling and heating runs. On the basis of the data about the peculiarities of dielectric and optical properties in the vicinity of T_{2} one can made the conclusion about the ferroelectric character of the phase, situated between T*_{2} and T^{cool}_{2}.
Keywords
Contributors
author
  • Lviv State University, Lomonosov Str. 8, 290005 Lviv, Ukraine
author
  • Lviv State University, Lomonosov Str. 8, 290005 Lviv, Ukraine
author
  • Lviv State University, Lomonosov Str. 8, 290005 Lviv, Ukraine
  • Lviv State University, Lomonosov Str. 8, 290005 Lviv, Ukraine
author
  • Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, 60-179 Poznań, Poland
author
  • Institute of Applied Physics, Acad. Sci. Moldova, Kishineu, Moldova
author
  • Institute of Applied Physics, Acad. Sci. Moldova, Kishineu, Moldova
author
  • Institute of Applied Physics, Acad. Sci. Moldova, Kishineu, Moldova
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv83z606kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.