Behavior of Polyaniline Particles in Vacuum on Silicon and Sapphire Single-Crystal Substrates

The types and structures of oxide phases produced during the incongruent reduction of sapphire (single-crystal Al2O3) by molten magnesium were examined. Polished faces of sapphire were exposed to molten magnesium at 1000 °C for 100 h. Such exposure resulted in the formation of a continuous, epitaxial layer of spinel (MgAl2O4) on sapphire and a continuous, epitaxial layer of magnesia (MgO) on the spinel. X-ray pole figure analyses indicated that two variants of spinel and magnesia had formed in a manner consistent with the following orientation relationships:

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Pop-In Events and Elastic Deformation of Sapphire Single Crystal during Nanoindentation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.924.275 ◽

2014 ◽

Vol 924 ◽

pp. 275-280

Author(s):

Rui Ke ◽

Yu Min Zhang ◽

Yu Feng Zhou

Keyword(s):

Single Crystal ◽

Elastic Deformation ◽

Loading Rate ◽

Mechanical Test ◽

Maximum Load ◽

Rate Effects ◽

Sapphire Single Crystal

Sapphire single crystal is widely used in many fields because of its excellent properties, as a focus of mechanical test, nanoindentation on sapphire is paid a great deal of attention by researchers. In this manuscript, the maximum load, depth and loading rate effects on the first pop-in event during nanoindentation of sapphire single crystal were discussed, the results indicated that these factors had no effect on the load at which the first pop-in occurred and the extension width of pop-in; the deformation below the first pop-in event was discussed and it could be roughly considered as purely elastic deformation through analyzing.

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Vacuum evaporation of CdTe thin films on Ni, Mo, Ti and TiN-deposited sapphire single-crystal substrates

Current Applied Physics ◽

10.1016/j.cap.2010.02.040 ◽

2010 ◽

Vol 10 (3) ◽

pp. S499-S501 ◽

Cited By ~ 6

Author(s):

Yuichi Sato ◽

Hirotoshi Hatori ◽

Suguru Igarashi ◽

Manabu Arai ◽

Kazuki Ito ◽

...

Keyword(s):

Thin Films ◽

Single Crystal ◽

Vacuum Evaporation ◽

Sapphire Single Crystal ◽

Cdte Thin Films

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Thin Film Depositions of CdTe Semiconductors on Amorphous and Single Crystal Substrates and Comparisons of their Properties

Materials Science Forum ◽

10.4028/www.scientific.net/msf.638-642.2909 ◽

2010 ◽

Vol 638-642 ◽

pp. 2909-2914 ◽

Cited By ~ 2

Author(s):

Yuichi Sato ◽

Tatsushi Kodate ◽

Manabu Arai

Keyword(s):

Thin Film ◽

Thin Films ◽

Substrate Temperature ◽

Single Crystal ◽

Photoluminescence Properties ◽

Glass Substrates ◽

Indium Doping ◽

Sapphire Single Crystal ◽

Cdte Thin Films ◽

The Difference

Thin films of CdTe semiconductors were prepared on sapphire single crystal and quartz glass substrates by a vacuum evaporation method. Crystallinity and photoluminescence properties of the obtained CdTe thin films on the substrates were semi-quantitatively compared concerning the difference of the substrate materials. Dependences of the properties on the substrate temperature in the preparations and indium doping to the thin films were also investigated.

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