Structural properties of $Zn:LiNbO_3/Mg:LiNbO_3$ single crystal thin films grown by LPE method

LPE법으로 성장시킨 $Zn:LiNbO_3/Mg:LiNbO_3$ 단결정 박막의 구조적 특성

  • Lee, H.J. (Department of Advanced Materials Engineering, Sungkyunkwan University) ;
  • Shin, T.I. (Department of Advanced Materials Engineering, Sungkyunkwan University) ;
  • Lee, J.H. (Energy & Applied Optics Team, Korea Institute of Industrial Technology) ;
  • Yoon, D.H. (Department of Advanced Materials Engineering, Sungkyunkwan University)
  • 이호준 (성균관대학교 신소재공학과) ;
  • 신동익 (성균관대학교 신소재공학과) ;
  • 이종호 (한국생산기술원) ;
  • 윤대호 (성균관대학교 신소재공학과)
  • Published : 2005.06.30

Abstract

The 5 mol% ZnO doped $LiNbO_3$ film and the 2 mol% MgO doped $LiNbO_3$ film were grown on the $LiNbO_3$ (001) substrate by liquid phase epitaxy (LPE) method with $Li_2CO_3-V_2O_5$ flux system. The crytsallinity and the lattice mismatch between $Zn:LiNbO_3$, film and $Mg:LiNbO_3$, film were analyzed by x-ray rocking curve (XRC). In addition, the ZnO and MgO distribution in the cross-section of the multilayer thin films was observed using electron probe micro analyzer (EPMA).

[ $Li_2CO_3-V_2O_5$ ], flux를 사용한 liquid phase epitaxy(LPE) 법을 사용하여 $LiNbO_3$ (001) 기판위에 5 mol% ZnO가 첨가된 $LiNbO_3$, 박막과 2 mol% MgO가 첨가된 $LiNbO_3$, 박막을 성장시켰다. $Zn:LiNbO_3$, 막과 $Mg:LiNbO_3$, 막과의 결정성과 격자 부정합은 x-ray rocking curve(XRC)로 분석되었다. 그리고 다층 박막의 단면에서의 ZnO와 MgO의 분포가 electron probe micro analyzer(EPMA)를 사용하여 관측되었다.

Keywords

References

  1. T.Y. Fan, A. Cordova-Plaza, M.J.F. Digonnet, R.L. Byer and H.J. Shaw, 'Nd : MgO: $LiNbO_3$J spectroscopy and laser devices', Opt. Am. B 3 (1986) 140
  2. T. Kawaguchi, D.H. Yoon, M. Minakata, Y. Okada, M. Imaeda and T. Fukuda, 'Growth of high crystalline quality $LiNbO_3$ thin films by a new liquid phase epitaxial technique from a solid-liquid coexisting melt', J. Crystal Growth 152 (1995) 87
  3. R. Nevada, G. Lifante, G.A. Torchia, J.A. Sanz-Garcia and F. Taque, 'Concentration dependence of refractive index in Zn-doped $LiNbO_3$ crystals', Opt. Mater. 11 (1998) 35
  4. Y. Furukawa, K. Kitamura, S. Takekawa, A. Miyamoto, M. Terao and N. Suda, 'Photorefraction in $LiNbO_3$ as a function of [Li]/[Nb] and MgO concentrations', Appl. Phys. Lett. 77 (16) (2000) 2494 https://doi.org/10.1063/1.1318721
  5. R.A. Becker, 'Comparison of guided-wave interferometer modulators fabricated on $LiNbO_3$ via Ti indiffusion and proton exchange', Appl. Phys. Lett. 43 (1983) 131
  6. P.K. Tien, R. Ulrich and R. J. Martin, 'Optical second harmonic generation in form of coherent cerenkov radiation from a thin-film waveguide', Appl. Phys. Lett. 17 (1970) 447
  7. K. Sugii, H. Koizumi, S. Miyazawa and S. Kondo, 'Temperature variations of lattice parameters of $LiNbO_3,\;LiTaO_3 and Li $(Nb_{1-y}\;Tay)\;O_3$ solid-solutions', J. Crystal Growth 33 (1976) 199
  8. T.-I. Shin, H. Lee, J.-W. Shur, B. Hong and D.-H. Yoon, 'Growth of Er : $LiNbO_3$J single crystal thin film with high crystal quality by LPE method', J. Korean Association of Crystal Growth, 9 (3) (1999) 295
  9. M. Ohring, 'The Materials science of thin films', Academic press, Elizabeth E. Tustian (San Diego, 1992) p. 315