scholarly journals Determination of surface polarity of c-axis oriented ZnO films by coaxial impact-collision ion scattering spectroscopy

1998 ◽  
Vol 72 (7) ◽  
pp. 824-826 ◽  
Author(s):  
T. Ohnishi ◽  
A. Ohtomo ◽  
M. Kawasaki ◽  
K. Takahashi ◽  
M. Yoshimoto ◽  
...  
2008 ◽  
Vol 23 (12) ◽  
pp. 3269-3272 ◽  
Author(s):  
Yutaka Adachi ◽  
Naoki Ohashi ◽  
Tsuyoshi Ohnishi ◽  
Takeshi Ohgaki ◽  
Isao Sakaguchi ◽  
...  

We have investigated the polarity of zinc oxide (ZnO) and Al-doped ZnO films grown on (11¯20) and (0001) sapphire substrates, using coaxial impact collision ion scattering spectroscopy. The films grown by pulsed laser deposition with a nominally undoped ZnO ceramic target had a (000¯1) surface, whereas the films prepared with a 1 mol% Al-doped ZnO ceramic target had a (0001) surface. The usage of Al-doped and undoped targets caused no difference in the in-plane lattice orientation. Electron microscope observations revealed that polarity change due to doping occurred without the formation of any interfacial phase between ZnO and sapphire.


1990 ◽  
Vol 197 ◽  
Author(s):  
Nicel D. Sanders ◽  
John H. Schaefer ◽  
Ali R. Bashey ◽  
Eric B. McElroy

ABSTRACTSophisticated surface science techniques long familiar to materials researchers are now being used routinely to characterize the colloids found in papermaking systems. Ion Scattering Spectroscopy (ISS) is used to obtain the surface elemental composition of inorganic filler pigments. Laser light scattering is applied to the determination of particle size and particle charge distribution by way of the methods of Photon Correlation Spectroscopy (PCS) and Doppler Electrophoretic Light Scattering (DELS). The heats and races of interaction of hydrophilic colloids (water soluble polyelectrolytes) with hydrophobic colloids are determined by batch titration microcalorimetry.


2005 ◽  
Vol 44 (No. 41) ◽  
pp. L1285-L1288 ◽  
Author(s):  
Shunjiro Fujii ◽  
Yusuke Michishita ◽  
Nobuhiko Miyamae ◽  
Hirofumi Suto ◽  
Shin-ichi Honda ◽  
...  

1998 ◽  
Vol 73 (2) ◽  
pp. 187-189 ◽  
Author(s):  
M. Yoshimoto ◽  
H. Maruta ◽  
T. Ohnishi ◽  
K. Sasaki ◽  
H. Koinuma

Author(s):  
Osamu Ishiyama ◽  
Makoto Shinohara ◽  
Fumihiko Ohtani ◽  
Mamoru Yoshimoto ◽  
Tatsuro Maeda ◽  
...  

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