The enhanced piezoelectric performance of Bi1/2Na1/2TiO3-BaTiO3 ceramics by Ba0.77Ca0.23TiO3 substitution

被引：17

作者：

Luo, Laihui ^{[1
]}

Ni, Feng ^{[1
]}

Zhang, Huixin ^{[1
]}

Chen, Hongbing ^{[2
]}

机构：

[1] Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China

[2] Ningbo Univ, Inst Mat Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 536卷

基金：

中国国家自然科学基金;

关键词：

Lead-free ceramic; Piezoelectric; Ferroelectric; Depolarization; MORPHOTROPIC PHASE-BOUNDARY; LEAD-FREE PIEZOCERAMICS; ELECTRICAL-PROPERTIES; NA0.5BI0.5TIO3; CRYSTALS; STRAIN; TRANSITIONS; BEHAVIOR; GROWTH;

D O I：

10.1016/j.jallcom.2012.05.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, lead-free (1-x)Bi0.47Na0.47Ba0.06TiO3-xBa(0.77)Ca(0.23)TiO(3) (BNBT-xBCT, x = 0-0.12) ceramics were fabricated by ordinary ceramic sintering technique. The results show that Ba0.77Ca0.23TiO3 (BCT) has diffused into Bi0.47Na0.47Ba0.06TiO3 (BNBT) lattices to form a new solid solution BNBT-xBCT. Moderate substitution of BCT in BNBT-xBCT (x <= 0.01) ceramics can enhance the piezoelectric and ferroelectric properties; meanwhile, depolarization temperature of the ceramics does not decrease. BNBT-0.01BCT ceramic exhibits the best piezoelectric properties and strongest ferroelectricity: piezoelectric coefficient d(33) = 178 pC/N; electromechanical coupling factors k(t) = 50% and k(p) = 27%; quality factor Q(m) = 131; remnant polarization P-r = 36 mu C/cm(2); coercive field E-c = 24.5 kV/cm. The piezoelectric properties, ferroelectric characteristics and depolarization mechanism of the ceramics are investigated and discussed. Published by Elsevier B.V.

引用

页码：113 / 118

页数：6

共 37 条

[1] Monoclinic crystal structure of polycrystalline Na0.5Bi0.5TiO3 [J].

Aksel, Elena ;

Forrester, Jennifer S. ;

Jones, Jacob L. ;

Thomas, Pam A. ;

Page, Katharine ;

Suchomel, Matthew R. .

APPLIED PHYSICS LETTERS, 2011, 98 (15)

[2]

[Anonymous], APPL PHYS LETT

[3] Electrical properties of Na1/2Bi1/2TiO3-BaTiO3 ceramics [J].

Chu, BJ ;

Chen, DR ;

Li, GR ;

Yin, QR .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (13) :2115-2121

[4] Electric-field-induced phase-change behavior in (Bi0.5Na0.5)TiO3-BaTiO3-(K0.5Na0.5)NbO3: A combinatorial investigation [J].

Daniels, John E. ;

Jo, Wook ;

Roedel, Juergen ;

Honkimaeki, Veijo ;

Jones, Jacob L. .

ACTA MATERIALIA, 2010, 58 (06) :2103-2111

[5] Electric-field-induced phase transformation at a lead-free morphotropic phase boundary: Case study in a 93%(Bi0.5Na0.5)TiO3-7% BaTiO3 piezoelectric ceramic [J].

Daniels, John E. ;

Jo, Wook ;

Roedel, Juergen ;

Jones, Jacob L. .

APPLIED PHYSICS LETTERS, 2009, 95 (03)

[6] Striking similarity of ferroelectric aging effect in tetragonal, orthorhombic and rhombohedral crystal structures [J].

Feng, Zuyong ;

Ren, Xiaobing .

PHYSICAL REVIEW B, 2008, 77 (13)

[7] Evidence for a non-rhombohedral average structure in the lead-free piezoelectric material Na0.5Bi0.5TiO3 [J].

Gorfman, S. ;

Thomas, P. A. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2010, 43 :1409-1414

[8] Composition-induced antiferroelectric phase and giant strain in lead-free (Nay,Biz)Ti1-xO3(1-x)-xBaTiO3 ceramics [J].

Guo, Yiping ;

Gu, Mingyuan ;

Luo, Haosu ;

Liu, Yun ;

Withers, Ray L. .

PHYSICAL REVIEW B, 2011, 83 (05)

[9] Processing and electromechanical properties of (Bi0.5Na0.5)((1-1.5x))LaxTiO3 ceramics [J].

Herabut, A ;

Safari, A .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1997, 80 (11) :2954-2958

[10] Morphotropic phase boundary and electrical properties of bisumuth sodium titanate-potassium niobate solid-solution ceramics [J].

Ishii, H ;

Nagate, H ;

Takenaka, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2001, 40 (9B) :5660-5663

← 1 2 3 4 →