Low Temperature Measurement of the Electrical Conductivity in Amorphous InGaZnO Thin Films

2013 ◽  
Vol 3 (2) ◽  
pp. P10-P12 ◽  
Author(s):  
Hasung Sim ◽  
Seongil Choi ◽  
Je-Geun Park ◽  
Jaewon Song ◽  
Seungwu Han ◽  
...  
Shinku ◽  
2002 ◽  
Vol 45 (3) ◽  
pp. 235-238
Author(s):  
Taro YAKABE ◽  
Yoshikazu TERAI ◽  
Syuma YASUZUKA ◽  
Chieko TERAKURA ◽  
Taichi TERASHIMA ◽  
...  

Vacuum ◽  
2016 ◽  
Vol 129 ◽  
pp. 74-78 ◽  
Author(s):  
Anitha Abraham ◽  
Tarachand ◽  
Gunadhor S. Okram ◽  
Rajani Jacob ◽  
P.V. Sreenivasan ◽  
...  

2013 ◽  
Vol 1543 ◽  
Author(s):  
P. Mele ◽  
S. Saini ◽  
H. Abe ◽  
H. Honda ◽  
K. Matsumoto ◽  
...  

ABSTRACTWe have prepared 2% Al doped ZnO (AZO) thin films on SrTiO3 and Al2O3 substrates by Pulsed Laser Deposition (PLD) technique at various deposition temperatures (Tdep = 300 °C – 600 °C). Transport and thermoelectric properties of AZO thin films were studied in low temperature range (300 K - 600 K). AZO/STO films present superior performance respect to AZO/Al2O3 films deposited at the same temperature, except for films deposited at 400 °C. Best film is the fully c-axis oriented AZO/STO deposited at 300 °C, with electrical conductivity 310 S/cm, Seebeck coefficient -65 μV/K and power factor 0.13 × 10-3 Wm-1K-2 at 300 K. Its performance increases with temperature. For instance, power factor is enhanced up to × 10-3 Wm-1K-2 at 600 K, surpassing the best AZO film previously reported in literature.


2015 ◽  
Vol 589 ◽  
pp. 521-525 ◽  
Author(s):  
R.S. Ajimsha ◽  
Amit.K. Das ◽  
M.P. Joshi ◽  
L.M. Kukreja

Author(s):  
Klaus-Ruediger Peters ◽  
Samuel A. Green

High magnification imaging of macromolecules on metal coated biological specimens is limited only by wet preparation procedures since recently obtained instrumental resolution allows visualization of topographic structures as smal l as 1-2 nm. Details of such dimensions may be visualized if continuous metal films with a thickness of 2 nm or less are applied. Such thin films give sufficient contrast in TEM as well as in SEM (SE-I image mode). The requisite increase in electrical conductivity for SEM of biological specimens is achieved through the use of ligand mediated wet osmiuum impregnation of the specimen before critical point (CP) drying. A commonly used ligand is thiocarbohvdrazide (TCH), first introduced to TEM for en block staining of lipids and glvcomacromolecules with osmium black. Now TCH is also used for SEM. However, after ligand mediated osinification nonspecific osmium black precipitates were often found obscuring surface details with large diffuse aggregates or with dense particular deposits, 2-20 nm in size. Thus, only low magnification work was considered possible after TCH appl ication.


Author(s):  
M. A. Kirk ◽  
M. C. Baker ◽  
B. J. Kestel ◽  
H. W. Weber

It is well known that a number of compound superconductors with the A15 structure undergo a martensite transformation when cooled to the superconducting state. Nb3Sn is one of those compounds that transforms, at least partially, from a cubic to tetragonal structure near 43 K. To our knowledge this transformation in Nb3Sn has not been studied by TEM. In fact, the only low temperature TEM study of an A15 material, V3Si, was performed by Goringe and Valdre over 20 years ago. They found the martensite structure in some foil areas at temperatures between 11 and 29 K, accompanied by faults that consisted of coherent twin boundaries on {110} planes. In pursuing our studies of irradiation defects in superconductors, we are the first to observe by TEM a similar martensite structure in Nb3Sn.Samples of Nb3Sn suitable for TEM studies have been produced by both a liquid solute diffusion reaction and by sputter deposition of thin films.


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