Structure and Thermoelectric Properties Correlation in half-Heusler ZrNiSn- based Bulk Nano-composite Materials by Transmission Electron Microscopy

2010 ◽  
Vol 1267 ◽  
Author(s):  
Dinesh Misra ◽  
Julien Pierre Amelie Makongo Mangan ◽  
Michael R. Shabetai ◽  
Girija Shankar Chaubey ◽  
John Wiley ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Composite Materials ◽  
Thermoelectric Properties ◽  
Powder Diffraction ◽  
Phase Identification ◽  
Nano Composite ◽  
X Ray ◽  
Transmission Electron

AbstractWe report the effects of HfO2 nanoparticles as inclusion to the Zr0.5Hf0.5Ni0.8Pd0.2Sn0.99Sb0.01 half-Heusler matrix on the thermoelectric properties. X-ray powder diffraction and transmission electron microscopy were employed for the phase identification and microstructure characterization of the composites. The transport properties are mainly discussed with regards to the microstructure details.

scholarly journals Structural, microstructural and magnetic characterization of the β-CoTe nanophase synthesized by a novel mechanochemical method

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 5027-5034
Author(s):  
Marcelo Augusto Malagutti ◽  
Kelli de Fátima Ulbrich ◽  
V. Z. C. Paes ◽  
J. Geshev ◽  
Carlos Eduardo Maduro de Campos
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Powder Diffraction ◽  
Mechanochemical Method ◽  
Magnetic Characterization ◽  
X Ray ◽  
Transmission Electron

This work reports an unprecedented mechanochemistry synthesis of β-CoTe and its systematic characterization through X-ray powder diffraction (XRPD), transmission electron microscopy (TEM), and magnetometry techniques.

Preparation and Characterization of CuCl Nanorods Using CuO as the Precursor

2013 ◽  
Vol 347-350 ◽  
pp. 1196-1198
Author(s):  
Ming Yang ◽  
Juan Juan Xia
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Powder Diffraction ◽  
Room Temperature ◽  
Average Length ◽  
Decisive Role ◽  
X Ray ◽  
Transmission Electron ◽  
Direct Attack

Nanorods of CuCl with an average length of 100-200 nm have been prepared by a simple reaction between CuO suspension and NH2OH·HCl in the presence of deionized gelatin at room temperature. Gelatin played a decisive role as an inhibitor of the direct attack of NH2OH·HCl to CuO surfaces and coagulation of the growing CuCl in producing the nanorods. The products were characterized by X-ray powder diffraction and transmission electron microscopy.

Detonation Synthesis of Nano-Size Materials

1995 ◽  
Vol 418 ◽  
Author(s):  
J. Forbes ◽  
J. Davis ◽  
C. Wong
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Nucleation And Growth ◽  
Detonation Synthesis ◽  
X Ray Diffraction ◽  
Crystalline Materials ◽  
X Ray ◽  
Transmission Electron ◽  
Nano Size

AbstractThe detonation of explosives typically creates 100's of kbar pressures and 1000's K temperatures. These pressures and temperatures last for only a fraction of a microsecond as the products expand. Nucleation and growth of crystalline materials can occur under these conditions. Recovery of these materials is difficult but can occur in some circumstances. This paper describes the detonation synthesis facility, recovery of nano-size diamond, and plans to synthesize other nano-size materials by modifying the chemical composition of explosive compounds. The characterization of nano-size diamonds by transmission electron microscopy and electron diffraction, X-ray diffraction and Raman spectroscopy will also be reported.

Hydrothermal Synthesis and Characterization of BiFeO3 Polyhedral Crystallites

2012 ◽  
Vol 174-177 ◽  
pp. 508-511
Author(s):  
Lin Lin Yang ◽  
Yong Gang Wang ◽  
Yu Jiang Wang ◽  
Xiao Feng Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

BiFeO3 polyhedrons had been successfully synthesized via a hydrothermal method. The as-prepared products were characterized by power X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The possible mechanisms for the formation of BiFeO3 polyhedrons were discussed. Though comparison experiments, it was found that the kind of precursor played a key role on the morphology control of BiFeO3 crystals.

Synthesis and Characterizations of Nanocubes, Monodispersed Nanocrystals and Nanospheres of Au

2007 ◽  
Vol 353-358 ◽  
pp. 2163-2166
Author(s):  
Ming Yang ◽  
Guo Qing Zhou ◽  
Jiang Guo Zhao ◽  
Zhan Jun Li
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Powder Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Transmission Electron ◽  
Uv Visible ◽  
Scherrer Formula ◽  
Visible Absorption Spectroscopy

Nanocubes, monodispersed nanocrystals and nanospheres of Au have been prepared by a simple reaction between HAuCl4·4H2O, NaOH and NH2OH·HCl in the presence of gelatin. The role of gelatin and the affection of pH in producing the nanoparticles of Au were discussed. The products were characterized by X-ray powder diffraction, transmission electron microscopy, and UV-visible absorption spectroscopy. The sizes of the monodispersed nanocrystals of Au were estimated by Debye-Scherrer formula according to XRD spectrum.

scholarly journals Crystallite Size Evaluation of ZnO Nanoparticles via Transmission Electron Microscopy and X-ray Powder Diffraction

2016 ◽  
Vol 22 (S3) ◽  
pp. 1610-1611
Author(s):  
Jonathan E. Cowen ◽  
Ashley E. Harris ◽  
Cecelia C. Pena ◽  
Stephen C. Bryant ◽  
Allison J. Christy ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Crystallite Size ◽  
Powder Diffraction ◽  
Zno Nanoparticles ◽  
X Ray ◽  
Transmission Electron ◽  
Size Evaluation

Ultrasonic Synthesis of Ag2Se Nanocrystal in Perrhenate Solution

2014 ◽  
Vol 919-921 ◽  
pp. 2109-2111 ◽  
Author(s):  
Wei Jun Shan ◽  
Qiang Yan ◽  
Du Li ◽  
Da Wei Fang ◽  
Shu Liang Zang
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Powder Diffraction ◽  
Ambient Pressure ◽  
Ion Source ◽  
Metal Chalcogenide ◽  
X Ray ◽  
Ultrasonic Synthesis ◽  
Transmission Electron ◽  
Se Nanoparticles

Ag2Se nanocrystal was successfully prepared by ultrasonic synthesis in water and ethanol systems at an ambient pressure. The powder of selenium was used as the selenium ion source. The size of the nanocrystals is in the scope of 10-20nm. The products were characterized by some means including X-ray Powder Diffraction (XRD) and Transmission Electron Microscopy (TEM) which was used to study the thermostability of the product. The result of the experiments indicated that the concentration of the reactant, the pH of the solution, the react temperature and the surfactant had some important influence on the formation and the size of the Ag2Se nanoparticles. The method we reported here is proved to be a new and an easy way to prepare the nanocrystals of metal chalcogenide.

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