Crystal structure of 0.96(Na0.5Bi0.5TiO3)-0.04(BaTiO3) from combined refinement of x-ray and neutron diffraction patterns

被引：29

作者：

Usher, T. -M. ^{[1
]}

Forrester, J. S. ^{[1
]}

dela Cruz, C. R. ^{[2
]}

Jones, J. L. ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 15期

关键词：

TRANSMISSION ELECTRON-MICROSCOPY; PHASE-TRANSITION; PEROVSKITE; MN;

D O I：

10.1063/1.4759117

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-resolution x-ray and neutron diffraction of (0.96)Na0.5Bi0.5TiO3-(0.04)BaTiO3 (NBT-4BT) reveal subtle structural distortions that evidence lower symmetry than allowed in the R3c space group. The combined refinement that best models the diffraction patterns is a two phase mixture of a monoclinic Cc phase and a minor fraction of a metrically cubic Pm (3) over barm phase (13 wt. %). The cubic phase is utilized to account for nanometer-scale regions whose local deviations from the long-range symmetry are not observed, such as polar nano-regions or tetragonal platelets. This suggests that the low symmetry found in the NBT-rich phases extends from 0 at. % to at least 4 at. % BT. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759117]

引用

页数：4

共 28 条

[1] Phase transition sequence in sodium bismuth titanate observed using high-resolution x-ray diffraction [J].

Aksel, Elena ;

Forrester, Jennifer S. ;

Kowalski, Benjamin ;

Jones, Jacob L. ;

Thomas, Pam A. .

APPLIED PHYSICS LETTERS, 2011, 99 (22)

[2] 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)

[3] PROCESSING AND PROPERTIES OF Na0.5Bi0.5TiO3 PIEZOELECTRIC CERAMICS MODIFIED WITH La, Mn AND Fe [J].

Aksel, Elena ;

Foronda, Humberto ;

Calhoun, Kyle A. ;

Jones, Jacob L. ;

Schaab, Silke ;

Granzow, Torsten .

FUNCTIONAL MATERIALS LETTERS, 2010, 3 (01) :45-48

[4] Imaging planar tetragonal sheets in rhombohedral Na0.5Bi0.5TiO3 using transmission electron microscopy [J].

Beanland, R. ;

Thomas, P. A. .

SCRIPTA MATERIALIA, 2011, 65 (05) :440-443

[5] X-RAY AND NEUTRON-DIFFRACTION STUDIES OF THE DIFFUSE PHASE-TRANSITION IN PBMG1/3NB2/3O3 CERAMICS [J].

BONNEAU, P ;

GARNIER, P ;

CALVARIN, G ;

HUSSON, E ;

GAVARRI, JR ;

HEWAT, AW ;

MORELL, A .

JOURNAL OF SOLID STATE CHEMISTRY, 1991, 91 (02) :350-361

[6]

Brown I.D., 2002, CHEM BOND INORGANIC, DOI DOI 10.1093/ACPROF:OSO/9780198742951.001.0001

[7] Thermal depolarization and ferroelectric properties of (Bi0.5Na0.5)1-xBaxTiO3 ceramics [J].

Chen, Shutao ;

Dong, Xianlin ;

Zeng, Tao ;

Zhang, Yuanyuan ;

Mao, Chaoliang .

FERROELECTRICS, 2008, 363 :199-208

[8] Structural origins of relaxor behavior in a 0.96(Bi1/2Na1/2)TiO3-0.04BaTiO3 single crystal under electric field [J].

Daniels, John E. ;

Jo, Wook ;

Roedel, Juergen ;

Rytz, Daniel ;

Donner, Wolfgang .

APPLIED PHYSICS LETTERS, 2011, 98 (25)

[9] 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)

[10] Enhanced High-Temperature Piezoelectric Coefficients and Thermal Stability of Fe- and Mn-Substituted Na0.5Bi0.5TiO3 Ceramics [J].

Davies, Matthew ;

Aksel, Elena ;

Jones, Jacob L. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (05) :1314-1316

← 1 2 3 →