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| Bi_(0.5)Na_(0.5)TiO_3-Ba(Al_(0.5)Sb_(0.5))O_3陶瓷的压电、铁电特性及场致应变效应 | |
| 作者单位： | ;1.山东大学物理学院晶体材料国家重点实验室;2.山东大学泰山学堂 |
| 摘 要： | 用普通陶瓷工艺制备了(1–x)Bi_(0.5)Na_(0.5)Ti O_3-x Ba(Al_(0.5)Sb_(0.5))O_3(x=0.03~0.05)压电陶瓷,研究了Ba(Al_(0.5)Sb_(0.5))O_3含量对Bi_(0.5)Na_(0.5)Ti O_3(BNT)压电陶瓷的介电、压电、铁电和场致应变效应的影响。研究表明,随着第二组元Ba(Al_(0.5)Sb_(0.5))O_3含量的增加,该陶瓷经历了从极性态的铁电相向非极性态的非铁电相的转变。在x=0.035组分处,多相共存导致样品具有最大的压电常数d_(33)=99 p C/N,最大的应变S_(max)=0.27%,机电耦合系数k_p=20.1%,k_t=30.4%,等效压电常数d~*_(33)=386 pm/V。 |
| 关 键 词： | 钛酸铋钠 压电陶瓷 无机非金属材料 压电常数 铁电特性 场致应变 |
Piezoelectric and ferroelectric and electric-field induced strain properties in Bi_(0.5)Na_(0.5)TiO_3-Ba(Al_(0.5)Sb_(0.5))O_3 ceramics |
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