Microscale to nanoscale ferroelectric domain and surface engineering of a near-stoichiometric LiNbO[sub 3] crystal

Terabe, Kazuya; Nakamura, Masaru; Takekawa, Shunji; Kitamura, Kenji; Higuchi, Shinji; Gotoh, Yoshihiko; Cho, Yasuo
January 2003
Applied Physics Letters;1/20/2003, Vol. 82 Issue 3, p433
Academic Journal
We have investigated microscale to nanoscale ferroelectric domain and surface engineering of a near-stoichiometric LiNbO[SUB3] crystal by using scanning force microscopy. The single crystals LiNbO[SUB3] fixed on metal substrates were polished to a 5 μm thickness. Artificial patterns of inverted-domain structures were fabricated in the samples, where polarization directions of the domains were switched by scanning the samples with a conductive cantilever while applying voltages. Furthermore, the negatively polarized surfaces in the patterns were preferentially etched in HF solution. As a result, cavity and mound-shaped surfaces were fabricated; these structures could be used to create functional templates and devices.


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