Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Growth and structural properties of ZnO co-doped Er :$ LiNbO_3$ thin films by liquid phase epitaxy method

LPE법에 의한 ZnO co-doped Er :$ LiNbO_3$, 박막의 성장 및 구조적 특성

  • 심장보 (성균관대학 신소재공학과) ;
  • 전원남 (성균관대학 신소재공학과) ;
  • 윤석규 (성균관대학 신소재공학과) ;
  • 윤대호 (성균관대학 신소재공학과)
  • Published : 2002.02.01
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Abstract

ZnO co-doped Er:$LiNbO_3$ single crystal thin films have been grown on $LiNbO_3$ (001) substrate by liquid phase epitaxy (LPE) method. The melts of ZnO co-doped Er:$LiNbO_3$ was fixed $Er_2O_3$, concentration (1 mol%) and different ZnO concentrations 3 and 5 mol%. The crystallinity of ZnO co-doped Er :$LiNbO_3$ films became better than the $LiNbO_3$ substrate. At ZnO 5 mol% concentration, the surface of ZnO co-doped Er:$LiNbO_3$ film is affected by compressive stress along both the perpendicular and the parallel direction. Also the surface of ZnO 3 mol% co-doped Er:$LiNbO_3$film is smoother than the original $LiNbO_3$ substrate surface.

Liquid phase epitaxy(LPE)법을 이용하여 ZnO co-doped Er:$LiNbO_3$, 단결정 박막을 $LiNbO_3$ (001) 기판 위에 성장시켰다. ZnO co-doped Er:$LiNbO_3$박막 성장의 초기 융액은 첨가제 $Er_2O_3$ 농도를 1 mol%로 고정시키고 ZnO 농도를 3,5 mol%로 조절하였다. ZnO co-doped Er :$LiNbO_3$박막의 결정성은 $LiNbO_3$ 기판보다 더 우수하였다. ZnO 5mol% 첨가한 경우 박막의 표면에는 수직한 방향과 평행한 방향으로 모두 압축응력이 작용하고 있었다. 또한 ZnO 3mol% 첨가된 Er :$LiNbO_3$박막의 표면은 원래의 $LiNbO_3$기판보다 더 평탄하였다

Keywords

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