(Invited) High-Temperature-Operating Dielectrics of Perovskite Oxides

2012 ◽  
Vol 45 (3) ◽  
pp. 195-207 ◽  
Author(s):  
Y. Ohshima ◽  
Y. Noguchi ◽  
T. Oguchi ◽  
Y. Kitanaka ◽  
M. Miyayama ◽  
...  
Keyword(s):  
High Temperature ◽  
Perovskite Oxides ◽  
Temperature Operating

Latch-Up Induced Slit Voiding in Aluminum Metal Lines

1999 ◽  
Author(s):  
Chunyu Zhang ◽  
Lakshmi Vedula ◽  
Shekhar Khandekar
Keyword(s):  
High Temperature ◽  
Line Width ◽  
Fold Increase ◽  
Metal Line ◽  
Operating Life ◽  
Mixed Signal ◽  
Aluminum Metal ◽  
Temperature Operating ◽  
Latch Up

Abstract Latch-up induced during High Temperature Operating Life (HTOL) test of a mixed signal device fabricated with 1.0 μm CMOS, double poly, double metal process caused failures due to an open in aluminum metal line. Metal lines revealed wedge voids of about 50% of the line width. Triggering of latch up mechanism during the HTOL test resulted in a several fold increase of current flowing through the ground metal line. This increase in current resulted in the growth of the wedge voids leading to failures due to open metal lines.

Analysis on Failure of Oxide Layer of T91 High Temperature Superheater Tube

2014 ◽  
Vol 1070-1072 ◽  
pp. 505-511
Author(s):  
Shan Shan Zhang ◽  
Guang Chen ◽  
Chang Ming Li ◽  
Da Hu
Keyword(s):  
High Temperature ◽  
Dissolved Oxygen ◽  
Oxide Layer ◽  
Outer Layer ◽  
Oxidation Mechanism ◽  
Middle Layer ◽  
Compact Structure ◽  
Protective Properties ◽  
Superheater Tube ◽  
Temperature Operating

The reason why the failure protective properties of the oxide layer of T91 high temperature superheater tube were analyzed in this study. The microstructure of the oxide layer of T91 high temperature superheater tube was observed by scanning electron microscope (SEM) and the morphological features of it was also analyzed. The concentrations of alloy elements in the section of internal tube were quantitatively analyzed using Energy Dispersive System (EDS). The results showed that the oxide layer of T91 tube can be divided into three layers: inner layer, middle layer and outer layer. The inner layer was formed by chromium rich oxide with compact structure. The middle layer was made up by porous oxide with loose structure. The outer layer was identified as Fe2O3. When the content of dissolved oxygen in steam was excessive, the apparent peeling marks will be appeared in the oxide layer of T91 high temperature superheater tube and the distribution of alloy elements in the oxide layer will present obvious proliferation, migration and enrichment phenomenon. Two different mechanisms (steam oxidation mechanism and oxygen oxidation mechanism) will exercise different influences on the structure and protective properties of the oxide layer: when steam contained dissolved oxygen, the oxide layer will be peroxidated by steam and the structure of oxide layer will be broken; When the tube was over-temperature operating, the oxide layer will be oxidated by oxygen.

Synthesis of nanostructured perovskite powders via simple carbonate co-precipitation

2013 ◽  
Vol 67 (5) ◽  
Author(s):  
Cinzia Cristiani ◽  
Giovanni Dotelli ◽  
Mario Mariani ◽  
Renato Pelosato ◽  
Luca Zampori
Keyword(s):  
High Temperature ◽  
Crystallite Size ◽  
Cost Effective ◽  
Perovskite Oxides ◽  
X Ray ◽  
Surface Areas ◽  
Precipitation Synthesis ◽  
Lanthanum Manganese Oxide ◽  
Co Precipitation ◽  
Perovskite Type

AbstractA very simple, cost-effective, chloride- and alkali-free, carbonate co-precipitation synthesis in aqueous medium was applied in the preparation of perovskite-type lanthanum manganese oxide-based powders, i.e. La0.70Sr0.30MnO3−δ (LSM) and La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM). The precursors so obtained yielded nano-structured perovskite oxides when treated at 900°C and 800°C, respectively. The measured BET surface areas were in the low-end range for high temperature oxides (4 m2 g−1 and 10 m2 g−1) but the X-ray crystallite size was as low as 50 nm for LSCrM and 90 nm for LSM.

scholarly journals High-temperature operating 8946nm-VCSELs with extremely low threshold for Cs-based chip scale atomic clocks

2015 ◽  
Vol 23 (11) ◽  
pp. 14763 ◽  
Author(s):  
Jianwei Zhang ◽  
Xing Zhang ◽  
Hongbo Zhu ◽  
Jian Zhang ◽  
Yongqiang Ning ◽  
...  
Keyword(s):  
High Temperature ◽  
Atomic Clocks ◽  
Temperature Operating ◽  
Low Threshold
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