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Influence of a 60˚ Domain Structure on the Orthorhombic Niobate-based Piezoelectric Property
Kohei Tsuchida,KenichiKakimoto,Isao Kagomiya 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.7
The present work investigated the dependence of domain switching (90˚ and 60˚ domains) on the piezoelectric property due to an applied electric field in Mn-doped Na<sub>0.55</sub>K<sub>0.45</sub>NbO<sub>3</sub> (Mn-NKN) ceramic samples. In addition, the electric-field-induced strain and temperature-dependent planar extensional electromechanical coupling factor kp were studied. The results indicate that the piezoelectric properties for the orthorhombic phase due to 60˚ domain switching are stable over a wide range of temperatures.