Evolution of Nanodomains and Formation of Self-Organized Structures during Local Switching in X-Cut LNOI

Crystals

Alla Slautina¹  Anton Turygin¹  Vladimir Shur¹  Boris Slautin¹  Elena Pashnina¹  Dmitry Chezganov¹ 

[1] School of Natural Science and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia;

关键词: lithium niobate;    domain structure;    local switching;    non-polar cut;    self-organization;    nanodomain engineering;   

DOI  :  10.3390/cryst12050659

来源: DOAJ

【 摘 要 】

The features of nanodomain growth during local switching in X-cut lithium niobate on insulator (LNOI) were comprehensively studied using the biased tip of a scanning probe microscope. The obtained results were discussed in terms of the kinetic approach. The revealed differences in domain growth in bulk LN and LNOI were attributed to the higher bulk conductivity of LNOI. The obtained influence of humidity on the shape and growth of isolated domains was attributed to the water meniscus. Analysis of the transition between the “forward growth” and “sideways growth” stages was performed by switching to the stripe electrode. A sand-glass-shaped domain was formed due to growth in the opposite direction after the domain touched the electrode. Stable periodical domain structures down to 300 nm were created and characterized in LNOI. Highly ordered comb-like domains of various alternating lengths, including four- and eight-fold increase periods, were produced by performing biased tip scanning along the Y axis. The obtained knowledge is important for the future development of nanodomain engineering methods in monocrystalline ferroelectric thin films on insulators.

【 授权许可】

Unknown