Thermal and Electrical Properties and Crystal Structure of Tungsten Oxide at High Temperatures

1953 ◽  
Vol 91 (4) ◽  
pp. 1010-1011 ◽  
Author(s):  
Shozo Sawada
2016 ◽  
Vol 10 (4) ◽  
pp. 395-400 ◽  
Author(s):  
Deepali Kelkar ◽  
◽  
Ashish Chourasia ◽  
◽  

Poly(3,4-ethylenedioxythiophene) (PEDOT) was chemically synthesized, undoped and then re-doped using FeCl3 as well as camphorsulfonic acid (CSA). FT-IR results confirm the nature of the synthesized and doped samples. XRD analysis indicates crystal structure modification after doping and was also used to calculate crystallinity of samples. Crystallinity increases after FeCl3 doping, whereas it reduces due to CSA doping. TGA-DTA results show reduction in Tg value for FeCl3 doped sample while it increases for CSA doped samples compared to that of undoped PEDOT. Reduction in Tg indicates plasticizing effect of FeCl3 whereas increase in Tg show anti-plasticizing effect of CSA in PEDOT. Conductivity value () increases by two orders of magnitude after doping. Log vs. 1/T graph show metallic nature of undoped PEDOT above 308 K, however both doped samples show semiconducting nature from 301 to 383 K.


2012 ◽  
Vol 113 (1) ◽  
pp. 39-42 ◽  
Author(s):  
V. F. Polev ◽  
M. I. Startseva ◽  
V. I. Gorbatov ◽  
Yu. V. Glagoleva ◽  
I. G. Korshunov

1960 ◽  
Vol 38 (7) ◽  
pp. 887-907 ◽  
Author(s):  
M. J. Laubitz

Thermal and electrical conductivity, thermoelectric power vs. platinum, and thermal expansion of Armco iron were determined in the temperature range of 0 °C to 1000 °C. All these properties show a discontinuous change at the α–γ transition of iron, and a change in slope at the Curie point. These measurements were carried out as a contribution to a co-operative determination of thermal conductivity of Armco iron at high temperatures.


2008 ◽  
Vol 179 (27-32) ◽  
pp. 1615-1619 ◽  
Author(s):  
A.A. Murashkina ◽  
A.N. Demina ◽  
A.K. Demin ◽  
V.I. Maragou ◽  
P.E. Tsiakaras

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