Details

Autor(en) / Beteiligte

• Chen, Chao
• Zhao, Xiangyong
• Wang, Yaojin
• Zhang, Haiwu
• Deng, Hao
• Li, Xiaobing
• Jiang, Xingan
• Jiang, Xiangping
• Luo, Haosu

Titel

Giant strain and electric-field-induced phase transition in lead-free (Na0.5Bi0.5)TiO3-BaTiO3-(K0.5Na0.5)NbO3 single crystal

Ist Teil von

• Applied physics letters, 2016-01, Vol.108 (2)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2016

Quelle

AIP Journals (American Institute of Physics)

Beschreibungen/Notizen

• A lead-free single crystal 0.92(Na0.5Bi0.5)TiO3-0.06BaTiO3-0.02(K0.5Na0.5)NbO3 (NBT-6BT-2KNN) with dimension of Φ35 mm × 10 mm is grown by a precisely controlled top seeded solution growth method. The 〈001〉 oriented single crystals have excellent piezoelectric properties with a giant strain of 0.83% at 28 kV/cm. Application of an electric-field ≥14 kV/cm leads to a phase transition from pseudocubic to coexistence of tetragonal and pseudocubic. A strong ferroelectric domain texture occurs during the phase transition. Furthermore, the variation of tetragonal phase fraction agrees well with the macroscopic strain curve, demonstrating that the induced tetragonal phase plays a critical role in the high strain property.