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Yoshiro Shimojo,Kunio Matsuzaki,Ruiping Wang,Tadashi Sekiya 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
To develop lead-free piezoelectric materials, (1 { x)(K0:6Na0:4)NbO3-xBaTiO3 and (1x)(K0:6Na0:4)NbO3-xSrTiO3 solid solutions were prepared by the hot-press method. The dielectric and piezoelectric properties of the samples were investigated as a function of dopant content x and type of dopant ions. It is found that the ferroelectric phase transition temperatures are dominated by the x value and the piezoelectric properties depend on both x and the type of dopant ions. The reasons for the results are discussed.