Phase transition and conduction mechanism in Pb2Na0.8R0.2Nb4.8Fe0.2O15 material (R=rare earth)

被引：4
作者：
Bouziane, M. [1 ]
Taibi, M. [2 ]
Boukhari, A. [1 ]
机构：
[1] Univ Mohammed V Agdal, Fac Sci, Lab Chim Solide Appl, Rabat, Morocco
[2] Univ Mohammed V Agdal, Ecole Normale Super, Lab Phys Chim Mat LAF 502, Rabat, Morocco
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2013年 / 207卷
关键词：
Oxides; Ferroelectricity; Phase transition; Ac conductivity; DIELECTRIC-PROPERTIES; TUNGSTEN; OXIDE;
D O I：
10.1016/j.jssc.2013.09.032
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Electrical properties of Pb2Na0.8Eu0.2Nb4.8Fe0.2O15 tungsten bronze compound were investigated. Ferroelectric phase transition of diffuse type is observed at 395 degrees C Conductivity study as a function of temperature (RT-600 degrees C) and at three different frequencies (10,100 and 1000 kHz) suggests the existence of dominant ionic conduction. The rise of ac conductivity on increasing temperature supports the NTCR (negative temperature coefficient of resistance) behaviour of the material. The activation energies have been evaluated from ac conductivity using Arrhenius equation and discussed. Different conduction mechanisms were identified. For comparison, the conducting properties of Pb2Na0.8R0.2N4.8Fe0.2O15 (R = Dy, Nd, La) were also investigated. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码：203 / 207
页数：5
相关论文
共 26 条
  • [1] Synthesis and ferroelectric properties of rare earth compounds with tungsten bronze-type structure
    Bouziane, M.
    Taibi, M.
    Boukhari, A.
    [J]. MATERIALS CHEMISTRY AND PHYSICS, 2011, 129 (03) : 673 - 677
  • [2] Preparation, characterization and dielectric study of new ferroelectric relaxors crystallizing with the tetragonal tungsten bronze structural type
    Bouziane, M.
    Benabad, A.
    Niepce, J. C.
    Elouadi, B.
    [J]. JOURNAL OF ELECTROCERAMICS, 2009, 23 (01) : 19 - 24
  • [3] Bouziane M., J PHYS CHEM SOLIDS, DOI DOI 10.1016/JJPCS.2012.09.018
  • [4] Phase diagram and dielectric properties of ferroelectric ceramics Pb2-xK1+xLixNb5O15
    Choukri, E.
    Gagou, Y.
    Belboukhari, A.
    Erramo, G.
    Fremy, M. -A.
    Zegzouti, A.
    Mezzane, D.
    Luk'yanchuk, I.
    Saint-Gregoire, P.
    [J]. SUPERLATTICES AND MICROSTRUCTURES, 2011, 49 (03) : 300 - 306
  • [5] Structural and dielectric properties of Sr5RTi3Ta7O30 (R = Sm, Y) ceramics
    Fang, L
    Zhang, H
    Yang, JF
    Meng, FH
    Yuan, RZ
    [J]. MATERIALS LETTERS, 2004, 58 (11) : 1777 - 1780
  • [6] Ionic Conduction Properties in PbK2LiNb5O15
    Gagou, Y.
    Fremy, M.
    Badeche, T.
    Mezzane, D.
    Choukri, H.
    Saint-Gregoire, P.
    [J]. FERROELECTRICS, 2008, 371 : 17 - 20
  • [7] The Ba2LnFeNb4O15 "tetragonal tungsten bronze": Towards RT composite multiferroics
    Josse, M.
    Bidault, O.
    Roulland, F.
    Castel, E.
    Simon, A.
    Michau, D.
    Von der Muehll, R.
    Nguyen, O.
    Maglione, M.
    [J]. SOLID STATE SCIENCES, 2009, 11 (06) : 1118 - 1123
  • [8] Structural and electrical studies of Ba5RTi3V7O30 (R=Ho, Gd, La) compounds
    Kathayat, Kiran
    Panigrahi, A.
    Pandey, A.
    Kar, S.
    [J]. PHYSICA B-CONDENSED MATTER, 2012, 407 (18) : 3753 - 3759
  • [9] KROGER FA, 1956, SOLID STATE PHYS, V3, P307
  • [10] Layer confinement effect on charge migration in polycarbonate/poly(vinylidene fluorid-co-hexafluoropropylene) multilayered films
    Mackey, Matthew
    Schuele, Donald E.
    Zhu, Lei
    Baer, Eric
    [J]. JOURNAL OF APPLIED PHYSICS, 2012, 111 (11)
123