摘要
[Li0.03(K0.48Na0.52)0.97](Nb0.97Sb0.03)O3-(Ba0.85Ca0.15)(Ti0.90Zr0.10)O3 [(1鈭?em>x)LKNNS-xBCTZ] lead-free piezoelectric ceramics were prepared by the conventional solid state method, and effects of BCTZ content on the piezoelectric properties of LKNNS ceramics were mainly investigated. A stable solid solution has been formed between LKNNS and BCTZ, and a morphotropic phase boundary of (1鈭?em>x)LKNNS-xBCTZ ceramics is identified in the range of 0聽<聽x聽鈮ぢ?.02. The Curie temperature of (1鈭?em>x)LKNNS-xBCTZ ceramics decreases with increasing BCTZ content. A higher 蓻r value and a lower tan 未 value are demonstrated for the (1鈭?em>x)LKNNS-xBCTZ ceramic with x聽=聽0.02. The (1鈭?em>x)LKNNS-xBCTZ ceramic with x聽=聽0.02 has an enhanced electrical behavior of d33聽鈭悸?37聽pC/N, kp聽鈭悸?8.6%, 蓻r聽鈭悸?451, tan 未聽鈭悸?.037, and Tc聽鈭悸?35聽掳C. As a result, (1鈭?em>x)LKNNS-xBCTZ ceramics are promising candidate materials for the field of lead-free piezoelectric materials.