Electrical studies on A- and B-site-modified Bi4Ti3O12 ceramic

被引：18

作者：

Prasad, N. V. ^{[1
]}

Babu, S. Narendra ^{[2
]}

Siddeshwar, A. ^{[2
]}

Prasad, G. ^{[2
]}

Kumar, G. S. ^{[2
]}

机构：

[1] PB Siddhartha Coll Arts & Sci, PG Ctr, Dept Phys, Vijayawada 520010, India

[2] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India

来源：

CERAMICS INTERNATIONAL | 2009年 / 35卷 / 03期

关键词：

Electrical ac-conductivity; BLSF; Impedance and modulus spectroscopy; Universal Jonscher's modified law; BISMUTH TITANATE; IMPEDANCE;

D O I：

10.1016/j.ceramint.2008.04.019

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pure and niobium-doped samarium bismuth titanate Sm0.75Bi3.25Ti3-xNbxO12 (x = 0 and 0.03) polycrystalline samples were prepared by the solid-state reaction route and lattice parameters were calculated from the XRD data. AC-impedance measurements have been carried out in the frequency range of 100 Hz to 1 MHz from RT to 500 degrees C showing that the samples are non-Debye type. In addition, complex impedance plots along with the detailed ac-conductivity analysis were used to understand the heterogeneity of the electro-ceramics. Results are corroborated with the proposed defect formula and the modified Jonscher's analysis. (C) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1057 / 1062

页数：6

共 14 条

[1] Impedance spectroscopy of SrBi2Ta2O9 and SrBi2Nb2O9 ceramics correlation with fatigue behavior
Chen, TC
Thio, CL
Desu, SB
[J]. JOURNAL OF MATERIALS RESEARCH, 1997, 12 (10) : 2628 - 2637
[2] FLORES JLP, 2003, J EUR CERAM SOC, V23, P839
[3] Jonscher A.K., 1983, Dielectric Relaxation in Solids
[4] Scaling of conductivity spectra in the acceptor-doped ferroelectric SrBi2Ta2O9 -: art. no. 024104
Kumar, MM
Ye, ZG
[J]. PHYSICAL REVIEW B, 2005, 72 (02)
[5] Lines M. E., 2001, Principles and Applications of Ferroelectrics and Related Materials
[6] Moulson A.J., 1990, ELECTROCERAMICS
[7] Lanthanum-substituted bismuth titanate for use in non-volatile memories
Park, BH
Kang, BS
Bu, SD
Noh, TW
Lee, J
Jo, W
[J]. NATURE, 1999, 401 (6754) : 682 - 684
[8] Impedance measurements on A and B site modified bismuth layered structure ferroelectric ceramics
Prasad, N. V.
Karmakar, S.
Gupta, S. M.
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2007, 21 (11): : 1875 - 1890
[9] Rao E. C. Subba, 1962, J PHYS CHEM SOLIDS, V23, P665
[10] Dielectric, impedance, magnetic and magnetoelectric measurements on YMnO3
Sekhar, M. Chandra
Prasad, N. Venkata
[J]. FERROELECTRICS, 2006, 345 : 45 - 57

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