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Author:

Zhang, Xiaohua (Zhang, Xiaohua.) | Ren, Wei (Ren, Wei.) (Scholars:任巍) | Shi, Peng (Shi, Peng.) | Khan, M. Saeed (Khan, M. Saeed.) | Chen, Xiaofeng (Chen, Xiaofeng.) | Wu, Xiaoqing (Wu, Xiaoqing.) | Yao, Xi (Yao, Xi.)

Indexed by:

SCIE EI Scopus

Abstract:

Bi2Zn2/3Nb4/3O7 thin films were deposited on Pt/TiO2/SiO2/Si( 1 0 0) substrates at a room temperature under the oxygen pressure of 1-10 Pa by pulsed laser deposition. Bi2Zn2/3Nb4/3O7 thin films were then post-annealed below 200 degrees C in a rapid thermal process furnace in air for 20 min. The dielectric and leakage current properties of Bi2Zn2/3Nb4/3O7 thin films are strongly influenced by the oxygen pressure during deposition and the post-annealing temperature. Bi2Zn2/3Nb4/3O7 thin films deposited under 1 Pa oxygen pressure and then post-annealed at a temperature of 150 degrees C show uniform surface morphologies. Dielectric constant and loss tangent are 57 and 0.005 at 10 kHz, respectively. The high resolution TEM image and the electron diffraction pattern show that nano crystallites exist in the amorphous thin film, which may be the origin of high dielectric constant in the Bi2Zn2/3Nb4/3O7 thin films deposited at low temperatures. Moreover, Bi2Zn2/3Nb4/3O7 thin film exhibits the excellent leakage current characteristics with a high breakdown strength and the leakage current density is approximately 1 x 10(-7) A/cm(2) at an applied bias field of 300 kV/cm. Bi2Zn2/3Nb4/3O7 thin films are potential materials for embedded capacitor applications. (C) 2011 Elsevier B.V. All rights reserved.

Keyword:

Bi2Zn2/3Nb4/3O7 thin films Dielectric properties Low temperature Pulsed laser deposition

Author Community:

  • [ 1 ] [Ren, Wei] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Peoples R China
  • [ 2 ] [Ren, Wei] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R China

Reprint Author's Address:

  • 任巍

    Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Peoples R China.

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Source :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

Year: 2011

Issue: 38

Volume: 509

Page: 9302-9306

2 . 2 8 9

JCR@2011

5 . 3 1 6

JCR@2020

ESI Discipline: MATERIALS SCIENCE;

JCR Journal Grade:2

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 14

SCOPUS Cited Count: 14

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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