In Situ Temperature-Dependent Transmission Electron Microscopy Studies of Pseudobinary mGeTe·Bi2Te3 (m = 3–8) Nanowires and First-Principles Calculations

Nano Letters ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 3923-3930 ◽  
Author(s):  
Chan Su Jung ◽  
Han Sung Kim ◽  
Hyung Soon Im ◽  
Kidong Park ◽  
Jeunghee Park ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
First Principles ◽  
First Principles Calculations ◽  
Temperature Dependent ◽  
Transmission Electron

In-situ transmission electron microscopy and first-principles study of Au (100) surface dislocation dynamics

2013 ◽  
Vol 608 ◽  
pp. 154-164 ◽  
Author(s):  
B. Song ◽  
J. Jansen ◽  
F.D. Tichelaar ◽  
H.W. Zandbergen ◽  
G. Gajewski ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
First Principles ◽  
Dislocation Dynamics ◽  
First Principles Study ◽  
Transmission Electron

{111}-specific twinning structures in nonstoichiometric ZrC0.6with ordered carbon vacancies

2012 ◽  
Vol 46 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Wentao Hu ◽  
Shaocun Liu ◽  
Bin Wen ◽  
Jianyong Xiang ◽  
Fusheng Wen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electron Diffraction ◽  
Interfacial Energy ◽  
First Principles ◽  
Great Reduction ◽  
Stacking Fault ◽  
First Principles Calculations ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron

Twinning structures in ordered nonstoichiometric ZrC0.6have been investigated experimentally and theoretically.Viatransmission electron microscopy and selected area electron diffraction measurements, {111}-specific twins have been observed. Interestingly, two special types of twinning interfaces,i.e.(111)Cand (111)Zrinterfaces, are recognized to be formed as a result of the presence of ordered carbon vacancies. In contrast to the high stacking fault energy for twinning formation in stoichiometric ZrC, first-principles calculations indicate that the presence of ordered carbon vacancies leads to a great reduction in the twinning interfacial energy, thus favouring the stabilization of twinning structures in the ordered ZrC0.6.

scholarly journals In Situ Investigations on Stress and Microstructure Evolution in Polycrystalline Ti(C,N)/α-Al2O3 CVD Coatings under Thermal Cycling Loads

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 158
Author(s):  
José García ◽  
Maiara Moreno ◽  
Wei Wan ◽  
Daniel Apel ◽  
Haroldo Pinto ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Thermal Cycling ◽  
Microstructure Evolution ◽  
Temperature Dependent ◽  
Alumina Layer ◽  
Stress Behavior ◽  
Transmission Electron ◽  
Α Al2o3

The stress behavior and the associated microstructure evolution of industrial Ti(C,N)/α-Al2O3 coatings subjected to thermal cycling are investigated by in situ energy dispersive synchrotron X-ray diffraction and transmission electron microscopy. Temperature-dependent stresses and changes in microstructural parameters (domain size and microstrain) are analyzed by in situ measurements at different temperatures between 25 and 800 °C, both in the heating up and cooling down step, including several thermal cycles. Transmission electron microscopy is used to evaluate defects before and after the thermal treatment. The introduction of high compressive stresses in α-Al2O3 by top-blasting is connected to a high defect density at the basal planes of the alumina layer. The stress relaxation of the alumina layer at high temperatures is associated with a successive annihilation of defects until a reversible temperature-dependent stress condition is set. Top-blasting does not change the initial microstructure and residual stress of the Ti(C,N) layer. Ti(C,N) shows a cyclic stress behavior associated with the heat treatment and an elastic deformation behavior in the temperature range investigated.

scholarly journals Data on atomic structures of precipitates in an Al-Mg-Cu alloy studied by high resolution transmission electron microscopy and first-principles calculations

Data in Brief ◽  
2021 ◽  
Vol 34 ◽  
pp. 106748
Author(s):  
Xuanliang Chen ◽  
Calin D. Marioara ◽  
Sigmund J. Andersen ◽  
Jesper Friis ◽  
Adrian Lervik ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Resolution ◽  
First Principles ◽  
First Principles Calculations ◽  
Atomic Structures ◽  
Cu Alloy ◽  
Transmission Electron

Layered stacking characteristics of ternary zirconium aluminum carbides

2007 ◽  
Vol 22 (11) ◽  
pp. 3058-3066 ◽  
Author(s):  
Z.J. Lin ◽  
L.F. He ◽  
M.S. Li ◽  
J.Y. Wang ◽  
Y.C. Zhou
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
First Principles ◽  
Scanning Transmission Electron Microscopy ◽  
Structural Information ◽  
Atomic Resolution ◽  
Layered Crystal ◽  
First Principles Calculations ◽  
Transmission Electron ◽  
Scanning Transmission

Layered stacking characteristics of ternary Zr–Al–C carbides were investigated using scanning transmission electron microscopy (STEM). Three previously unknown compounds, i.e., Zr4Al3C6, Zr5Al6C9, and Zr7Al6C11 were identified. The present study extends the structural information of ternary Zr–Al–C ceramics. The influence of the thickness of the NaCl-type Zr-C slab on the elastic properties of ternary Zr–Al–C ceramics is discussed based on first-principles calculations. In addition, direct atomic-resolution observations illustrate the process for forming the unique layered crystal structures of ternary Zr–Al–C ceramics. These results also provide insights into the formation mechanism of layered ternary Zr–Al–C carbides.

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