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Microstructures and electrical properties of (Na1/2Bi1/2)Cu3Ti4O12 ceramics

Chen Ge Zhang Jia-Liang Hao Wen-Tao Tan Yong-Qiang Zheng Peng Shao Shou-Fu

Microstructures and electrical properties of (Na1/2Bi1/2)Cu3Ti4O12 ceramics

Chen Ge, Zhang Jia-Liang, Hao Wen-Tao, Tan Yong-Qiang, Zheng Peng, Shao Shou-Fu
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  • A series of (Na1/2Bi1/2)Cu3Ti4O12 (NBCTO) ceramics were prepared by solid-state reaction at different sintering temperatures. The crystal structure,microstructures,dielectric properties and complex impedance and the corresponding temperature dependences were investigated. It has been revealed that the NBCTO ceramics has quite similar electrical properties with those previously found in CaCu3Ti4O12ceramics. The NBCTO ceramics prepared at sintering temperatures between 990℃ and 1060℃ exhibit low-frequency ε′ larger than 10000 at room temperature. With the increasing of sintering temperature,both ε′ and the grain size in microstructure first increase and then decrease. Although large difference is observed in their dielectric properties and complex impedance for the various NBCTO ceramics,there exist some common features. Whereas only one dielectric relaxation is seen at room temperature or lower temperatures,two are seen in the dielectric spectra within the measured frequency range of 40 Hz—10 MHz at higher temperatures.
    [1]

    [1] Zhao Y L,Jiao Z K,Cao G H 2003 Acta Phys. Sin. 52 1500 (in Chinese) [赵彦立、焦正宽、曹光旱 2003 物理学报 52 1500]

    [2]

    [2] Zhou X L,Du P Y 2005 Acta Phys. Sin. 54 354 (in Chinese) [周晓莉、杜丕一 2005 物理学报 54 354]

    [3]

    [3] Liu P,He Y,Li J,Zhu G Q,Bian X B 2007 Acta Phys. Sin. 56 5489 (in Chinese) [刘鹏、何颖、李俊、朱刚强、边小兵 2007 物理学报 56 5489]

    [4]

    [4] Subramanian M A,Li D,Duan N,Reisner B A,Sleight A W 2000 J. Solid State Chem. 151 323

    [5]

    [5] Ramirez A P,Subramanian M A,Gardel M,Blumberg G,Li D,Vogt T,Shapiro S M 2000 Solid State Commun. 115 217

    [6]

    [6] Holmes C C,Vogt T,Shapiro S M,Wakimoto S,Ramirez A P 2001 Science. 293 637

    [7]

    [7] Sinclair D C,Adams T B,Morrison F D,West A R 2002 Appl.Phys. Lett. 80 2153

    [8]

    [8] Adams T B,Sinclair D C,West A R 2002 Adv. Mater. (Weinheim,Ger.) 14 1321

    [9]

    [9] Cohen M H,Neaton J B,He L,Vanderbilt D 2003 J. Appl. Phys. 94 3299

    [10]

    ]Lunkenheimer P,Fichtl R,Ebbinghaus S G,Loidl A 2004 Phys. Rev. B 70 172102

    [11]

    ]Fang T T,Shiau H K 2004 J. Am. Ceram. Soc. 87 2072

    [12]

    ]Bender B A,Pan M J 2005 Mater. Sci. Eng. B 117 339

    [13]

    ]Ni L,Chen X M,Liu X Q,Hou R Z 2006 Solid State Commun. 139 45

    [14]

    ]Zhang L,Tang Z J 2004 Phys. Rev. B 70 174306

    [15]

    ]Capsoni D,Bini M,Massarotti V,Chiodelli G,Mozzatic M C,Azzoni C B 2004 J. Solid State Chem. 177 4494

    [16]

    ]Li J,Subramanian M A,Rosenfeld H D,Jones C Y,Toby B H,Sleight A W 2004 Chem. Mater. 16 5223

    [17]

    ]Fang T T,Li T M,Hei H F 2006 Acta Mater. 54 2867

    [18]

    ]Fang T T,Li T M 2007 J. Am. Ceram. Soc. 90 638

    [19]

    ]Li M,Feteira A,Sinclair D C,West A R 2006 Appl. Phys. Lett. 88 232903

    [20]

    ]Subramanian M A,Sleight A W 2002 Solid State Sci. 4 347

    [21]

    ]Liu J J,Duan C G,Mei W N 2005 J. Appl. Phys. 98 093703

    [22]

    ]Ferrarelli M C,Adams T B,Feterira A,Sinclair D C,West A R 2006 Appl. Phys. Lett. 89 212904

    [23]

    ]Zuo R Q,Feng L X,Yan Y Y,Chen B,Cao G H 2007 Solid State Commun. 91 138

    [24]

    ]Shao S F,Zhang J L,Zheng P,Zhong W L,Wang C L 2006 J. Appl. Phys. 99 086104

    [25]

    ]Shao S F,Zheng P,Zhang J L,Niu X K,Wang C L,Zhong W L 2006 Acta Phys. Sin. 55 6661 (in Chinese) [邵守福、郑鹏、张家良、钮效鹍、王春雷、钟维烈 2006 物理学报 55 6661]

    [26]

    ]Zhang J L,Zheng P,Wang C L,Zhao M L,Li J C,Wang J F 2005 Appl. Phys. Lett. 87 142901

    [27]

    ]Zhang J L,Zheng P,Shao S F,Su W B,Wang C L 2007 Ferroelectrics 356 85

  • [1]

    [1] Zhao Y L,Jiao Z K,Cao G H 2003 Acta Phys. Sin. 52 1500 (in Chinese) [赵彦立、焦正宽、曹光旱 2003 物理学报 52 1500]

    [2]

    [2] Zhou X L,Du P Y 2005 Acta Phys. Sin. 54 354 (in Chinese) [周晓莉、杜丕一 2005 物理学报 54 354]

    [3]

    [3] Liu P,He Y,Li J,Zhu G Q,Bian X B 2007 Acta Phys. Sin. 56 5489 (in Chinese) [刘鹏、何颖、李俊、朱刚强、边小兵 2007 物理学报 56 5489]

    [4]

    [4] Subramanian M A,Li D,Duan N,Reisner B A,Sleight A W 2000 J. Solid State Chem. 151 323

    [5]

    [5] Ramirez A P,Subramanian M A,Gardel M,Blumberg G,Li D,Vogt T,Shapiro S M 2000 Solid State Commun. 115 217

    [6]

    [6] Holmes C C,Vogt T,Shapiro S M,Wakimoto S,Ramirez A P 2001 Science. 293 637

    [7]

    [7] Sinclair D C,Adams T B,Morrison F D,West A R 2002 Appl.Phys. Lett. 80 2153

    [8]

    [8] Adams T B,Sinclair D C,West A R 2002 Adv. Mater. (Weinheim,Ger.) 14 1321

    [9]

    [9] Cohen M H,Neaton J B,He L,Vanderbilt D 2003 J. Appl. Phys. 94 3299

    [10]

    ]Lunkenheimer P,Fichtl R,Ebbinghaus S G,Loidl A 2004 Phys. Rev. B 70 172102

    [11]

    ]Fang T T,Shiau H K 2004 J. Am. Ceram. Soc. 87 2072

    [12]

    ]Bender B A,Pan M J 2005 Mater. Sci. Eng. B 117 339

    [13]

    ]Ni L,Chen X M,Liu X Q,Hou R Z 2006 Solid State Commun. 139 45

    [14]

    ]Zhang L,Tang Z J 2004 Phys. Rev. B 70 174306

    [15]

    ]Capsoni D,Bini M,Massarotti V,Chiodelli G,Mozzatic M C,Azzoni C B 2004 J. Solid State Chem. 177 4494

    [16]

    ]Li J,Subramanian M A,Rosenfeld H D,Jones C Y,Toby B H,Sleight A W 2004 Chem. Mater. 16 5223

    [17]

    ]Fang T T,Li T M,Hei H F 2006 Acta Mater. 54 2867

    [18]

    ]Fang T T,Li T M 2007 J. Am. Ceram. Soc. 90 638

    [19]

    ]Li M,Feteira A,Sinclair D C,West A R 2006 Appl. Phys. Lett. 88 232903

    [20]

    ]Subramanian M A,Sleight A W 2002 Solid State Sci. 4 347

    [21]

    ]Liu J J,Duan C G,Mei W N 2005 J. Appl. Phys. 98 093703

    [22]

    ]Ferrarelli M C,Adams T B,Feterira A,Sinclair D C,West A R 2006 Appl. Phys. Lett. 89 212904

    [23]

    ]Zuo R Q,Feng L X,Yan Y Y,Chen B,Cao G H 2007 Solid State Commun. 91 138

    [24]

    ]Shao S F,Zhang J L,Zheng P,Zhong W L,Wang C L 2006 J. Appl. Phys. 99 086104

    [25]

    ]Shao S F,Zheng P,Zhang J L,Niu X K,Wang C L,Zhong W L 2006 Acta Phys. Sin. 55 6661 (in Chinese) [邵守福、郑鹏、张家良、钮效鹍、王春雷、钟维烈 2006 物理学报 55 6661]

    [26]

    ]Zhang J L,Zheng P,Wang C L,Zhao M L,Li J C,Wang J F 2005 Appl. Phys. Lett. 87 142901

    [27]

    ]Zhang J L,Zheng P,Shao S F,Su W B,Wang C L 2007 Ferroelectrics 356 85

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  • Received Date:  20 July 2009
  • Accepted Date:  22 September 2009
  • Published Online:  15 May 2010

Microstructures and electrical properties of (Na1/2Bi1/2)Cu3Ti4O12 ceramics

  • 1. 山东大学物理系,济南 250100

Abstract: A series of (Na1/2Bi1/2)Cu3Ti4O12 (NBCTO) ceramics were prepared by solid-state reaction at different sintering temperatures. The crystal structure,microstructures,dielectric properties and complex impedance and the corresponding temperature dependences were investigated. It has been revealed that the NBCTO ceramics has quite similar electrical properties with those previously found in CaCu3Ti4O12ceramics. The NBCTO ceramics prepared at sintering temperatures between 990℃ and 1060℃ exhibit low-frequency ε′ larger than 10000 at room temperature. With the increasing of sintering temperature,both ε′ and the grain size in microstructure first increase and then decrease. Although large difference is observed in their dielectric properties and complex impedance for the various NBCTO ceramics,there exist some common features. Whereas only one dielectric relaxation is seen at room temperature or lower temperatures,two are seen in the dielectric spectra within the measured frequency range of 40 Hz—10 MHz at higher temperatures.

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