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Bogyu Kim,Younguk Jeon,Hyebi Kim,Chulwoo Lee,JoonHyun Kang,Jongbum Kim,In Soo Kim,Young-Hwan Kim,Kwanil Lee,Young Duck Kim,Il Ki Han 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2
Potassium tantalate niobate (KTal-xNbxO3, KTN) is a ferroelectric material with an extremely high electro-optic (EO) coefficient suitable for integrated photonic device. In the K-Ta-Nb-O system, the perovskite structure KTN with the ferroelectric properties is generally hard to deposit due to high volatility of potassium(K). By controlling K contents in a KTN ceramic target, the crystal structure can be formed from pyrochlore to perovskite phase. In this presentation, we will analyze the effects of K-enriched targets on the phase-formation process in KTN films and its structural differences.