Dielectric and structural properties of diffuse ferroelectric phase transition in Pb1.85K1.15Li0.15Nb5O15 ceramic

被引：4
作者：
Choukri, E. [1 ]
Gagou, Y. [2 ]
Mezzane, D. [1 ]
Abkhar, Z. [1 ]
El Moznine, R. [3 ]
Luk'yanchuk, I. [2 ]
Saint-Gregoire, P. [4 ,5 ]
Kavokin, A. V. [6 ]
机构：
[1] FSTG Univ Cadi Ayyad Marrakech, LMCN, Marrakech, Morocco
[2] Univ Picardie, LPMC, F-80039 Amiens, France
[3] Univ Chouaib DoukKali, LPMC, Equipe Phys Environm, F S El Jadida, Morocco
[4] Univ Nimes, Dept Sci, F-30021 Nimes 01, France
[5] CNRS, C2M, Inst C Gerhardt, UMR 5253, F-34095 Montpellier 05, France
[6] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
来源：
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS | 2011年 / 53卷 / 02期
关键词：
IMPEDANCE-SPECTROSCOPY; NIOBATE;
D O I：
10.1051/epjap/2010100073
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We studied the structural and dielectric properties of new Tetragonal Tungsten Bronze (TTB) ceramics Pb1.85K1.15Li0.15Nb5O15 that was synthesized by solid-state reaction. We pay a special attention to the diffuse phase transition (DPT) that occurs close to 425 degrees C. Using dielectric measurements in a frequency range of 10 Hz-1. MHz and in the temperature range 30-560 degrees C, we have shown that the real permittivity close to DPT is well described by Santos-Eiras phenomenological model. Space-charge polarization, relaxation phenornena and free charges conductivity have been analyzed using dielectric spectroscopy impedance and modulus characterization. Cole-Cole plots show a non-Debye (polydispersive) type relaxation. In paraelectric phase the Arrhenius activation energy was determined as E-tau = 0.72 eV. We demonstrated that frequency dependence of ac conductivity at different temperatures obeys the Jonscher's universal law: sigma(ac) = sigma(dc) + A(omega)(n).
引用
收藏
页数：10
相关论文
共 39 条
[1]   Structural and Raman properties of the tetragonal tungsten bronze ferroelectric Pb2(1-x)K1+xGdxNb5O15 [J].
Amira, Y. ;
Gagou, Y. ;
Menny, A. ;
Mezzane, D. ;
Zegzouti, A. ;
Elaatmani, M. ;
El Marssi, M. .
SOLID STATE COMMUNICATIONS, 2010, 150 (9-10) :419-423
[2]   Ferroelectric relaxor Ba(TiCe)O3 [J].
Ang, C ;
Jing, Z ;
Yu, Z .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (38) :8901-8912
[3]   Phase diagrams of ferroelectric thin film with two surface layers [J].
Arhchoui, H. ;
El Amraoui, Y. ;
Mezzane, D. ;
Luk'yanchuk, I. .
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS, 2009, 48 (01) :10503p1-10503p5
[4]  
CHAUDHRY MA, 1985, J MATER SCI, V20, P3581, DOI 10.1007/BF01113764
[5]   Ferroelectric and glassy states in La-modified lead zirconate titanate ceramics: A general picture [J].
El Marssi, M ;
Farhi, R ;
Dellis, JL ;
Glinchuk, MD ;
Seguin, L ;
Viehland, D .
JOURNAL OF APPLIED PHYSICS, 1998, 83 (10) :5371-5380
[6]  
El Moznine R, 2003, J PHYS D APPL PHYS, V36, P330, DOI 10.1088/0022-3727/36/4/302
[7]   A new ferroelectric compound:: PbK2LiNb5O15 [J].
Gagou, Y ;
Mezzane, D ;
Aliouane, N ;
Badeche, T ;
Elaatmani, M ;
Pischedda, MH ;
Saint-Gregoire, R .
FERROELECTRICS, 2001, 254 (1-4) :197-204
[8]   Ionic Conduction Properties in PbK2LiNb5O15 [J].
Gagou, Y. ;
Fremy, M. ;
Badeche, T. ;
Mezzane, D. ;
Choukri, H. ;
Saint-Gregoire, P. .
FERROELECTRICS, 2008, 371 :17-20
[9]   ALKALI STRONTIUM-BARIUM-LEAD NIOBATE SYSTEMS WITH A TUNGSTEN BRONZE STRUCTURE - CRYSTALLOGRAPHIC PROPERTIES AND CURIE POINTS [J].
GIESS, EA ;
SCOTT, BA ;
BURNS, G ;
OKANE, DF ;
SEGMULLER, A .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1969, 52 (05) :276-+
[10]  
HOSSAIN A, 1984, THESIS TEXAS A M U, P45
1234