CAJ | 학술논문

研究了扩散相变中心温度分别为40℃和65℃的两种La-掺杂PMN基陶瓷在其扩散相变温度范围的电致应变、电致应变随电场(S～E)的滞后特性和剩余应变效应．结果发现，对于扩散相变中心温度为40℃的材料在0～1kV／mm单向电场驱动下，从-10～60℃电致应变和滞后都随温度的升高而减小；对另一种材料无论由± 1kV／mm交变电场或由 0～ 1kV／mm单向电场驱动，温度从13～41℃变化均出现电致应变峰值，而滞后和剩余应变随温度的升高而减小．对以上实验结果本文作了详细讨论．
연구료확산상변중심온도분별위40℃화65℃적량충La-참잡PMN기도자재기확산상변온도범위적전치응변、전치응변수전장(S～E)적체후특성화잉여응변효응．결과발현，대우확산상변중심온도위40℃적재료재0～1kV／mm단향전장구동하，종-10～60℃전치응변화체후도수온도적승고이감소；대령일충재료무론유± 1kV／mm교변전장혹유 0～ 1kV／mm단향전장구동，온도종13～41℃변화균출현전치응변봉치，이체후화잉여응변수온도적승고이감소．대이상실험결과본문작료상세토론．
The electrostrictive strain, hysterestic (S ～ E) nature and remanent strain effect were investigated in their diffuse phase transition temperature rang for two kinds of La-doping PMN-based ceramics with the diffuse phase transition center temperature 40℃ and 65℃ respectively. The experimental results show that for the material with diffuse phase transition center temperature 40℃, its strain and hysteresis decrease as temperature increases in the range of-10℃to 60℃ driving by 0～ 1kV/mm one direction field, and for the other material whether driving by + 1kV/mm AC field or 0～ 1kV/mm one direction field the strains exhibit a peak value with temperature change from 13℃ to 41℃, the remanent strain and hysteresis decrease monotonically with temperature increase. Above experimental results were also explained in detail.