Grain-Size-Dependent Thermal Transport Properties in Nanocrystalline Yttria-Stabilized Zirconia

2001 ◽  
Vol 703 ◽  
Author(s):  
Ho-Soon Yang ◽  
J.A. Eastman ◽  
L.J. Thompson ◽  
G.-R. Bai
Keyword(s):  
Grain Boundaries ◽  
Thermal Transport ◽  
Chemical Vapor ◽  
Yttria Stabilized Zirconia ◽  
Organic Chemical ◽  
Stabilized Zirconia ◽  
Size Dependent ◽  
Metal Organic ◽  
Organic Chemical Vapor Deposition

ABSTRACTUnderstanding the role of grain boundaries in controlling heat flow is critical to the success of many envisioned applications of nanocrystalline materials. This study focuses on the effect of grain boundaries on thermal transport behavior in nanocrystalline yttria-stabilized zirconia (YSZ) coatings prepared by metal-organic chemical vapor deposition.

Epitaxial Growth of “Strain-Free” Indium Oxide Films on (111) Yttria-Stabilized Zirconia by Metal-Organic Chemical Vapor Deposition

2020 ◽  
Vol 1014 ◽  
pp. 22-26
Author(s):  
Yi Zhuo ◽  
Zi Min Chen ◽  
Sheng Dong Zhang
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Thick Layer ◽  
Chemical Vapor ◽  
Yttria Stabilized Zirconia ◽  
Organic Chemical ◽  
Stabilized Zirconia ◽  
High Quality ◽  
Metal Organic ◽  
Organic Chemical Vapor Deposition

In this work, In2O3 thin films were grown on (111) yttria-stabilized zirconia (YSZ) by metal-organic chemical vapor deposition (MOCVD) at different temperature. It is found that samples grown at low temperature showed lower residual stress but higher mosaicity while high growth temperatures could also cause deterioration in crystal quality due to increasing lattice mismatch. To obtain high quality In2O3 film with low residual strain, a 30-nm thick layer grown at 530 °C was introduced as buffer layer, considering both stress relaxation and crystalline mosaicity. By using two-step growth method, a 400 nm-thick, high quality, near-strain-free In2O3 thin film with the full width at half maximum (FWHM) values of (222) diffraction peaks being as narrow as 648 arcsec was successfully obtained.

Expedient route to volatile zirconium metal-organic chemical vapor deposition precursors using amide synthons and implementation in yttria-stabilized zirconia film growth

1999 ◽  
Vol 14 (1) ◽  
pp. 12-15 ◽  
Author(s):  
John A. Belot ◽  
Richard J. McNeely ◽  
Anchuan Wang ◽  
Charles J. Reedy ◽  
Tobin J. Marks ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Yttria Stabilized Zirconia ◽  
Organic Chemical ◽  
Major Advance ◽  
Stabilized Zirconia ◽  
Organic Precursor ◽  
Metal Organic ◽  
Organic Chemical Vapor Deposition

This communication reports rapid, efficient syntheses of the zirconium-organic metal-organic chemical vapor deposition (MOCVD) precursors Zr(acac)4 and Zr(dpm)4 (acac = acetylacetonate; dpm = dipivaloylmethanate) as well as a new, highly volatile, air- and moisture-stable Zr precursor based on a tetradentate Schiff-base ligand, Zr(tfacen)2 (tfacen = bis-trifluoroacetylacetone-ethylenediiminate). The improved one-step synthetic routes employ tetrakis(dimethylamido)zirconium as a common intermediate and represent a major advance over previous methods employing ZrCl4 or diketonate metathesis. Furthermore, Zr(tfacen)2 is shown to be an effective metal-organic precursor for the MOCVD-mediated growth of (100) oriented yttria-stabilized zirconia thin films.

Optical and Structural Properties of Mn-Implanted GaN Films

2001 ◽  
Vol 693 ◽  
Author(s):  
J. Xu ◽  
J. Li ◽  
R. Zhang ◽  
X.Q. Xiu ◽  
D.Q. Lu ◽  
...  
Keyword(s):  
Structural Properties ◽  
Chemical Vapor ◽  
Organic Chemical ◽  
Yellow Band ◽  
Band Emission ◽  
New Energy ◽  
Metal Organic ◽  
Organic Chemical Vapor Deposition ◽  
Mn Doped

AbstractThe optical and structural properties of Mn-implanted GaN films have been investigated. The films studied were grown by metal organic chemical vapor deposition (MOCVD), with Mn implanted in 150 KeV, which can offer many distinguished advantages compared with other doping methods. A new energy band with a minimum at 2.9 eV in the reflectance spectra has been observed. The yellow band emission was greatly decreased according to the result of photoluminescence. The structure analysis revealed that the Mn doped sample has good crystal quality as the pure GaN after annealed. And further discussions on the role of Mn in GaN: Mn films have been presented.

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