Thermo-electrical energy conversions in Bi0.5Na0.5TiO3-BaTiO3 thin films prepared by sol-gel method

被引：37

作者：

Zheng, Xiu-Cheng ^{[1
]}

Zheng, Guang-Ping ^{[1
]}

Lin, Zheng ^{[1
]}

Jiang, Zhi-Yuan ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

来源：

THIN SOLID FILMS | 2012年 / 522卷

关键词：

Lead-free ferroelectrics; Thin films; Pyroelectric properties; Electro-caloric effect; Sol-gel preparation;

D O I：

10.1016/j.tsf.2012.08.052

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid solution (1-x)Bi0.5Na0.5TiO3-xBaTiO(3) (BNT-xBT) thin films with x=0, 0.1, 0.9 and 1.0 are synthesized by sol-gelmethod. The as-prepared BNT-xBT films are crystallized into a single perovskite phase. The temperature-dependent polarizations of the thin films are measured to characterize their performances in thermo-electrical energy conversions. In BNT-0.1BT it is found that the electro-caloric refrigeration temperature change is 3.3 degrees C with the application of an electric field of 862 kV/cm at 46 degrees C. The density of electrical energy generating from a 10 degrees C temperature variation cycle is 0.68 J/cm(3). The results demonstrate that BNT-0.1BT lead-free ferroelectrics are excellent environmental-friendly energy materials for electro-caloric refrigeration and pyroelectric energy harvesting applications near room temperature. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：125 / 128

页数：4

共 12 条

[1] Lead-Free Ferroelectric (Na1/2Bi1/2)TiO3-BaTiO3 Thin Films in the Morphotropic Phase Boundary Composition: Solution Processing and Properties [J].

Alonso-Sanjose, David ;

Jimenez, Ricardo ;

Bretos, Inigo ;

Calzada, Maria L. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (10) :2218-2225

[2] Abnormal electrocaloric effect of Na0.5Bi0.5TiO3-BaTiO3 lead-free ferroelectric ceramics above room temperature [J].

Bai, Yang ;

Zheng, Guang-Ping ;

Shi, San-Qiang .

MATERIALS RESEARCH BULLETIN, 2011, 46 (11) :1866-1869

[3] Evidence of morphotropic phase boundary displacement in lead-free (Bi0.5Na0.5)1-xBaxTiO3 polycrystalline thin films [J].

Bretos, Inigo ;

Alonso-San Jose, David ;

Jimenez, Ricardo ;

Ricote, Jesus ;

Calzada, M. Lourdes .

MATERIALS LETTERS, 2011, 65 (17-18) :2714-2716

[4] The pyroelectric energy harvesting capabilities of PMN-PT near the morphotropic phase boundary [J].

Kandilian, Razmig ;

Navid, Ashcon ;

Pilon, Laurent .

SMART MATERIALS AND STRUCTURES, 2011, 20 (05)

[5] Optical, mechanical, and dielectric properties of Bi1/2Na1/2TiO3 thin film synthesized by sol-gel method [J].

Kim, Chang-Yeoul ;

Sekino, Tohru ;

Niihara, Koichi .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2010, 55 (03) :306-310

[6] Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9 PbMg1/3Nb2/3O3-0.1 PbTiO3 near room temperature [J].

Mischenko, A. S. ;

Zhang, Q. ;

Whatmore, R. W. ;

Scott, J. F. ;

Mathur, N. D. .

APPLIED PHYSICS LETTERS, 2006, 89 (24)

[7] Giant electrocaloric effect in thin-film PbZr0.95Ti0.05O3 [J].

Mischenko, AS ;

Zhang, Q ;

Scott, JF ;

Whatmore, RW ;

Mathur, ND .

SCIENCE, 2006, 311 (5765) :1270-1271

[8] FERROELECTRIC CONVERSION OF HEAT TO ELECTRICAL ENERGY - A DEMONSTRATION [J].

OLSEN, RB .

JOURNAL OF ENERGY, 1982, 6 (02) :91-95

[9] Lead-free piezoceramics [J].

Saito, Y ;

Takao, H ;

Tani, T ;

Nonoyama, T ;

Takatori, K ;

Homma, T ;

Nagaya, T ;

Nakamura, M .

NATURE, 2004, 432 (7013) :84-87

[10] Energy harvesting based on Ericsson pyroelectric cycles in a relaxor ferroelectric ceramic [J].

Sebald, Gael ;

Pruvost, Sebastien ;

Guyomar, Daniel .

SMART MATERIALS AND STRUCTURES, 2008, 17 (01)

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