TY - JOUR
T1 - Morphotropic phase boundary and electric properties in (1-x)Bi 0.5Na 0.5TiO 3-xBiCoO 3 lead-free piezoelectric ceramics
AU - Guo, Fei Fei
AU - Yang, Bin
AU - Zhang, Shan Tao
AU - Liu, Xiao
AU - Zheng, Li Mei
AU - Wang, Zhu
AU - Wu, Feng Min
AU - Wang, Da Li
AU - Cao, Wen Wu
N1 - Funding Information:
This work was supported by the National Nature Science Foundation of China (10704021, 51102062, and 11174127), the Key Scientific and Technological Project of Harbin (Grant No. 2009AA3BS131), the Postdoctoral Foundation of Heilongjiang Province (Grant No. LBH-Z10147), and the Fundamental Research Funds for the Central Universities (Grant No. HIT. NSRIF. 2011011).
PY - 2012/6/15
Y1 - 2012/6/15
N2 - Lead-free (1-x)Bi 0.5Na 0.5TiO 3-xBiCoO 3 (x=0, 0.015, 0.025, 0.03, 0.035, 0.04, and 0.06) piezoelectric ceramics have been synthesized and their structure and electric properties have been investigated systemically. The rhombohedral-tetragonal morphotropic phase boundary (MPB) locates near x=0.025-0.035. For the ceramics with x=0.025, the saturated polarization (P s), remnant polarization (P r), coercive field (E c), strain(S), piezoelectric constant (d 33), and thickness electromechanical coupling factor (k t) are 40.6μC/cm 2, 35.4 μC/cm 2, 5.25 kV/mm, 0.11%, 107pC/N, and 0.45, respectively. The low temperature humps of relative dielectric constant, which is indicative of T R-T, are becoming inconspicuous gradually with the increasing x and almost disappear at x=0.04. The depolarization temperature T d decreases first and then increases with the increasing x. Our results may be helpful for further work on Bi 0.5Na 0.5TiO 3-based lead-free piezoelectric ceramics.
AB - Lead-free (1-x)Bi 0.5Na 0.5TiO 3-xBiCoO 3 (x=0, 0.015, 0.025, 0.03, 0.035, 0.04, and 0.06) piezoelectric ceramics have been synthesized and their structure and electric properties have been investigated systemically. The rhombohedral-tetragonal morphotropic phase boundary (MPB) locates near x=0.025-0.035. For the ceramics with x=0.025, the saturated polarization (P s), remnant polarization (P r), coercive field (E c), strain(S), piezoelectric constant (d 33), and thickness electromechanical coupling factor (k t) are 40.6μC/cm 2, 35.4 μC/cm 2, 5.25 kV/mm, 0.11%, 107pC/N, and 0.45, respectively. The low temperature humps of relative dielectric constant, which is indicative of T R-T, are becoming inconspicuous gradually with the increasing x and almost disappear at x=0.04. The depolarization temperature T d decreases first and then increases with the increasing x. Our results may be helpful for further work on Bi 0.5Na 0.5TiO 3-based lead-free piezoelectric ceramics.
UR - https://www.scopus.com/pages/publications/84863526803
UR - https://www.scopus.com/pages/publications/84863526803#tab=citedBy
U2 - 10.1063/1.4730770
DO - 10.1063/1.4730770
M3 - Article
AN - SCOPUS:84863526803
SN - 0021-8979
VL - 111
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 12
M1 - 124113
ER -