High Piezoelectric Property and Low Electric Field-strain Hysteresis of BiAlO3-doped PZT Ceramics

doi:10.15541/jim20220162

Abstract

Abstract:

Lead-based piezoelectric ceramics are widely used in piezoelectric devices due to their excellent piezoelectric properties. Piezoelectric actuators require piezoelectric ceramics with high piezoelectric properties and high precision displacement as well as small strain hysteresis under applied electric fields, which can be obtained by donor-acceptor co-doping. In this work, (1-x)(Pb_0.95Sr_0.05)(Zr₅₃Ti₄₇)O₃-xBiAlO₃ + 0.2%MnO₂ ceramics were prepared by a traditional solid-state reaction method (doping amount in mass percentage). The microstructure and piezoelectric properties of the prepared ceramics were investigated. The results demonstrated that the defect dipole can hinder the domain rotation in a few additions of BiAlO₃, resulting in a relatively low piezoelectric property and low strain hysteresis under electric fields. With more BiAlO₃ addition, the piezoelectric properties and strain hysteresis of the ceramics are improved because the pinning effect to the domain rotation become weak. The optimal performance is obtained at x=1.75%, where the piezoelectric coefficient (d₃₃), electromechanical coupling coefficient (k_p), mechanical quality factor (Q_m) and Curie temperature (T_C) are 504 pC/N, 0.71, 281 and 312 ℃, respectively. This piezoelectric ceramic show a relative high strain and low strain hysteresis (only 15%) under the electric field of 10 kV/cm. Due to the high piezoelectric performance and low electric field strain hysteresis along with the good temperature stability, the (1-x)(Pb_0.95Sr_0.05)(Zr₅₃Ti₄₇)O₃-xBiAlO₃ + 0.2%MnO₂ ceramics can be a kind of piezoelectric ceramic with practical application potentials for the piezoelectric actuators.

Key words: piezoelectric properties, low strain hysteresis, temperature stability, PZT, BiAlO₃ doping

CLC Number:

TQ174

LIU Dingwei, ZENG Jiangtao, ZHENG Liaoying, MAN Zhenyong, RUAN Xuezheng, SHI Xue, LI Guorong. High Piezoelectric Property and Low Electric Field-strain Hysteresis of BiAlO₃-doped PZT Ceramics[J]. Journal of Inorganic Materials, 2022, 37(12): 1365-1370.

Figures/Tables 7

Fig. 1 XRD patterns of (1-x)PSZT-xBA-0.2Mn ceramics (a) 20°-80°; (b) Near (200) peak

Fig. 2 SEM images for surface microstructures of (1-x)PSZT-xBA-0.2Mn ceramics

Fig. 3 Temperature dependent dielectric constant (εr) and dielectric loss (tanδ) of (1-x)PSZT-xBA-0.2Mn (x=0.75%, 1.25%, 1.75%, and 2.25%, in mol fraction) at different frequencies

Fig. 4 Ferroelectric properties of the (1-x)PSZT-xBA-0.2Mn ceramics (x=0.50%, 0.75%, 1.00%, 1.25%, 1.50%, 1.75%, 2.00%, and 2.25%, in mol fraction) (a) Polarization-electric field (P-E) hysteresis loops; (b) Current-electric field (I-E) loops; (c) Strain-electric field (S-E) loops (40kV/cm, 10Hz)

Table 1 Performance parameters of different component ceramics

(1-x)PSZT-xBA-0.2Mn/ (%, in mol fraction)	Average strain size/μm	d₃₃/(pC·N^-1)	k_p	Q_m	T_C/℃	ε	tanδ/%	$d 33 *$ /(pC·N^-1)	H/%
0.50	1.6	333	0.68	992	329	1290	0.22	380	10
0.75	1.9	367	0.69	1131	324	1300	0.27	398	8
1.00	2.5	383	0.70	827	318	1293	0.32	407	3
1.25	3.0	402	0.73	853	316	1420	0.30	540	12
1.50	4.5	460	0.72	445	311	1416	0.32	538	12
1.75	6.3	504	0.71	281	312	1470	0.27	699	15
2.00	6.7	532	0.73	130	310	1690	0.66	638	13
2.25	6.2	501	0.69	113	312	1669	1.01	710	17

Table 1 Performance parameters of different component ceramics

(1-x)PSZT-xBA-0.2Mn/ (%, in mol fraction)	Average strain size/μm	d₃₃/(pC·N^-1)	k_p	Q_m	T_C/℃	ε	tanδ/%	$d 33 *$ /(pC·N^-1)	H/%
0.50	1.6	333	0.68	992	329	1290	0.22	380	10
0.75	1.9	367	0.69	1131	324	1300	0.27	398	8
1.00	2.5	383	0.70	827	318	1293	0.32	407	3
1.25	3.0	402	0.73	853	316	1420	0.30	540	12
1.50	4.5	460	0.72	445	311	1416	0.32	538	12
1.75	6.3	504	0.71	281	312	1470	0.27	699	15
2.00	6.7	532	0.73	130	310	1690	0.66	638	13
2.25	6.2	501	0.69	113	312	1669	1.01	710	17

Fig. 5 Unipolar strains-electric (S-E) fields of (1-x)PSZT- xBA-0.2Mn (x=0.50%-2.25%)

Fig. 6 Unipolar strains-electric (S-E) fields of (1-x)PSZT- xBA-0.2Mn ceramics (x=1.75%) (30kV/cm, 10Hz)

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High Piezoelectric Property and Low Electric Field-strain Hysteresis of BiAlO₃-doped PZT Ceramics

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