TY - JOUR
T1 - Structure and electric properties of (1-x)(Bi1/2Na 1/2) TiO3-xBaTiO3 Systems
AU - Liu, Yunfei
AU - Lv, Yinong
AU - Xu, Ming
AU - Shi, Shuzhe
AU - Xu, Hanqiao
AU - Yang, Xiaodong
PY - 2007/6
Y1 - 2007/6
N2 - The structural, dielectric and piezoelectric properties of (1-x)(Bi 1/2Na1/2) TiO3-xBaTiO3 ceramics were investigated for the compositional range, x=0.02, 0.04, 0.06, 0.08, 0.10. The samples were synthesized by a conventional solid-state reaction technique. All compositions show a single perovskite structure, and X-ray powder diffraction patterns can be indexed using a rhombohedral structure. Lattice constants and lattice distortion increase while the amount of BaTiO3 increases. The X-ray diffraction results show the morphotropic phase boundary (MPB) of (1-x)(Bi1/2Na1/2) TiO3-xBaTiO exists in near x=0.06-0.08. Temperature dependence of dielectric constant ε T 33/ε 0 measurement reveals that all compositions experience one structural phase and two ferroelectric phases transition below 400 °C: rhombohedral (or rhombohedral plus tetragonal) ferroelectric phase ↔ tetragonal antiferroelectric phase ↔ tetragonal paraelectric phase. Relaxor behaviors exist in the course of ferroelectric to antiferroelectric phase transition. Dielectric and piezoelectric properties are enhanced in the MPB range for (1-x)(Bi1/2Na1/2)TiO3-xBaTiO 3.
AB - The structural, dielectric and piezoelectric properties of (1-x)(Bi 1/2Na1/2) TiO3-xBaTiO3 ceramics were investigated for the compositional range, x=0.02, 0.04, 0.06, 0.08, 0.10. The samples were synthesized by a conventional solid-state reaction technique. All compositions show a single perovskite structure, and X-ray powder diffraction patterns can be indexed using a rhombohedral structure. Lattice constants and lattice distortion increase while the amount of BaTiO3 increases. The X-ray diffraction results show the morphotropic phase boundary (MPB) of (1-x)(Bi1/2Na1/2) TiO3-xBaTiO exists in near x=0.06-0.08. Temperature dependence of dielectric constant ε T 33/ε 0 measurement reveals that all compositions experience one structural phase and two ferroelectric phases transition below 400 °C: rhombohedral (or rhombohedral plus tetragonal) ferroelectric phase ↔ tetragonal antiferroelectric phase ↔ tetragonal paraelectric phase. Relaxor behaviors exist in the course of ferroelectric to antiferroelectric phase transition. Dielectric and piezoelectric properties are enhanced in the MPB range for (1-x)(Bi1/2Na1/2)TiO3-xBaTiO 3.
KW - Bismuth sodium titanate
KW - Electric property
KW - Morphotropic phase boundary
KW - Relaxor
UR - http://www.scopus.com/inward/record.url?scp=34547307224&partnerID=8YFLogxK
U2 - 10.1007/s11595-005-2315-4
DO - 10.1007/s11595-005-2315-4
M3 - 文章
AN - SCOPUS:34547307224
SN - 1000-2413
VL - 22
SP - 315
EP - 319
JO - Journal Wuhan University of Technology, Materials Science Edition
JF - Journal Wuhan University of Technology, Materials Science Edition
IS - 2
ER -