Ferroelectric properties of the [N(CH3)4]2CoCl2Br2 compound

被引：26

作者：

Ben Rhaiem, Abdallah ^{[1
]}

Jomni, Fathi ^{[2
]}

Karoui, Karim ^{[1
]}

Guidara, Kamel ^{[1
]}

机构：

[1] Univ Sfax, Solid State Lab, Fac Sci, Sfax 3000, Tunisia

[2] LMOP, Tunis 2092, Tunisia

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2013年 / 1035卷

关键词：

Calorimetric study; Dielectric permittivity; AC conductivity; STRUCTURAL PHASE-TRANSITIONS; DIELECTRIC-PROPERTIES; X-RAY; RAMAN; (CH3)4NCDCL3; CRYSTALS;

D O I：

10.1016/j.molstruc.2012.09.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Synthesis, X-ray powder and Raman description are reported for [N(CH3)(4)](2)CoCl2Br2 compound. The calorimetric study shows three endothermic peaks at 289 K, 323 K and 408 K. The compound crystallizes in the orthorhombic system, space group Pnma with a = 12.384 angstrom, b = 9.058 angstrom and c = 15.647 angstrom. The dielectric spectra were measured in the frequency range 10(-1)-10(6) Hz and temperature interval from 200 to 305 K. The dielectric permittivity shows that this compound exhibits a ferroelectric-paraelectric phase transition at 290 K. The frequency dependent permittivity is interpreted in the non-Debye model. The temperature dependence of the low frequency limit of the bulk AC conductivity sigma(dc) is well described by the Arrhenius equation: sigma(dc) = sigma(0) exp(-E-a/kT). (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：140 / 144

页数：5

共 31 条

[1] VIBRATIONAL STUDY OF PHASE-TRANSITIONS IN (C3H7NH3)2PBCL4
ABID, Y
KAMOUN, M
DAOUD, A
ROMAIN, F
[J]. JOURNAL OF RAMAN SPECTROSCOPY, 1990, 21 (11) : 709 - 716
[2] ABID Y, 1979, PHYS STATUS SOLIDI A, V52, P175
[3] Analysis of the ferroelastic phase transition of N(CH3)(4)MnCl3 (TMMC) by means of x-ray diffraction study
AguirreZamalloa, G
Rodriguez, V
Couzi, M
Sayetat, F
Fertey, P
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (04) : 937 - 949
[4] INTERCONNECTION BETWEEN FREQUENCY-DOMAIN HAVRILIAK-NEGAMI AND TIME-DOMAIN KOHLRAUSCH-WILLIAMS-WATTS RELAXATION FUNCTIONS
ALVAREZ, F
ALEGRIA, A
COLMENERO, J
[J]. PHYSICAL REVIEW B, 1993, 47 (01): : 125 - 130
[5] Structural, vibrational and DSC investigations of the tetraethylammonium hydrogenselenate crystal
Baran, J
Sledz, M
Drozd, M
Pietraszko, A
Haznar, A
Ratajczak, H
[J]. JOURNAL OF MOLECULAR STRUCTURE, 2000, 526 : 361 - 371
[6] Electrical properties of trimethylammonium monobromodichloromercurate
Ben Rhaiem, A
Zouari, N
Guidara, K
Gargouri, A
Daoud, A
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 387 (1-2) : 1 - 5
[7] Durig J.R., 2006, J MOL STRUCT, V786, P9
[8] DIELECTRIC-PROPERTIES AND STRUCTURAL PHASE-TRANSITIONS IN TMMNC (N(CH3)4MNCL3) TYPE CRYSTALS
GESI, K
[J]. FERROELECTRICS, 1992, 137 (1-4) : 209 - 223
[9] Gesi K., 1968, J PHYS SOC JPN, V51, P1
[10] Structure and phase transitions in tetramethylammonium tetrabromoindate(III) and tetraethylammonium tetrabromoindate(III) crystals
Gósniowska, M
Ciunik, Z
Bator, G
Jakubas, R
Baran, J
[J]. JOURNAL OF MOLECULAR STRUCTURE, 2000, 555 : 243 - 255

← 1 2 3 4 →