Ferroelectric domain structures in LiNbO3 single-crystal fibers

The ferroelectric domain structures of small diameter LiNbO3 single crystal fibers were found to be different from those usually observed in large LiNbO3 crystals. c-Axis grown fibers with diameters up to 800 μm were found to be virtually single domain with +c end facing the melt during growth. Fibers grown along the a-axis had a bi-domain configuration with the domain boundary along the a-axis and parallel to the c-face. A model is proposed, based on the thermoelectric potential generated by axial and radial temperature gradients, to explain the domain structures observed in these fibers.

[1]  R. L. Byer,et al.  Growth And Characterization Of Single Crystal Refractory Oxide Fibers , 1982, Photonics West - Lasers and Applications in Science and Engineering.

[2]  K. Nassau,et al.  Ferroelectric lithium niobate. 1. Growth, domain structure, dislocations and etching , 1966 .

[3]  J. Peuzin,et al.  Piezoelectric study of poling mechanism in lithium niobate crystals at temperature close to the curie point , 1976 .

[4]  A. M. Glass,et al.  Principles and Applications of Ferroelectrics and Related Materials , 1977 .

[5]  T. Iizuka,et al.  Etching study of microdomains in LiNbO3 single crystals , 1975 .

[6]  H. Parfitt,et al.  Domain structures in lithium niobate crystals , 1967 .

[7]  E. Kaldis.  Current Topics in Materials Science , 1980 .

[8]  P. Koidl,et al.  Current induced periodic ferroelectric domain structures in LiNbO3 applied for efficient nonlinear optical frequency mixing , 1985 .

[9]  Robert Bruce Lindsay,et al.  Physical Properties of Crystals , 1957 .

[10]  N. Ming,et al.  The growth striations and ferroelectric domain structures in Czochralski-grown LiNbO3 single crystals , 1982 .

[11]  K. Nassau,et al.  THE DOMAIN STRUCTURE AND ETCHING OF FERROELECTRIC LITHIUM NIOBATE , 1965 .

[12]  K. Nassau,et al.  Ferroelectric lithium niobate. 2. Preparation of single domain crystals , 1966 .

[13]  M. Fejer,et al.  Laser-heated miniature pedestal growth apparatus for single-crystal optical fibers , 1984 .

[14]  K. Nassau,et al.  FERROELECTRIC BEHAVIOR OF LITHIUM NIOBATE , 1965 .

[15]  Robert S. Feigelson,et al.  Single Crystal Fibers By The Laser-Heated Pedestal Growth Method , 1984, Other Conferences.

[16]  R. Bartlett,et al.  High temperature transport processes in lithium niobate , 1969 .

[17]  Tomoaki Yamada,et al.  Growth Ridges, Etched Hillocks, and Crystal Structure of Lithium Niobate , 1967 .