Nanostructural (301) and (101) twins of RuO2 were grown atop rutile phase TiO2

nanorods sitting on a LiNbO3(100) substrate. The surface morphology, structural

and spectroscopic properties of the as-deposited nanocrystals were characterized by

field-emission scanning electron microscopy, X-ray diffraction, micro-Raman

spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy,

and selected-area electron diffractometry. The field-emission scanning electron

microscopic images and X-ray diffraction patterns indicated growth of V-shaped

RuO2 (301) and (101) twins with angles of 51° and 110° between two arms,

respectively. The Raman spectrum showed the nanosize induced redshift and peak

broadening of the RuO2 and rutile phase of TiO2 signatures with respect to that of

the bulk counterparts. The X-ray photo-electron spectra indicated the existence of

higher oxidation states of ruthenium in RuO2 nanocrystals. Transmission electron

microscopic and selected-area electron diffractometric characterization of the Vshaped

RuO2 nanocrystals showed that the nanorods were crystalline RuO2 with

twin planes of (301)/(101) and twin directions of [¯103]/[¯101] at the V-junction. The

probable formation mechanisms of the twins were discussed.

(301) and (101) RuO2 Twins on Nanostructural Rutile TiO2 Template. Y.M.Chen,

C.A.Chen, C.N.Yeh, J.K.Chi, Y.S.Huang, D.S.Tsai, K.K.Tiong: Materials

Chemistry and Physics, 2009, 117[2-3], 544-9