Zobrazeno 1 - 10
of 99
pro vyhledávání: '"D. C. Agrawal"'
Autor:
D C Agrawal
Publikováno v:
Physics Education. 49:685-688
Human beings consume energy every day. Even at rest, energy is still needed for the working of the internal organs. This is achieved by the metabolism of consumed food in the presence of inhaled oxygen. During the resting state this is called the mai
Autor:
Colin A. Wolden, Santosh K. Sahoo, D. C. Agrawal, Hassaram Bakhru, Sumit Kumar, Y. N. Mohapatra, Durga Misra
Publikováno v:
MRS Proceedings. 1547:53-60
Ba0.8Sr0.2TiO3/ZrO2 heterostructured thin films with different individual layer ZrO2 thicknesses are deposited on Pt/Ti/SiO2/Si substrates by a sol-gel process. The current versus voltage (I-V) measurements of the above multilayered thin films in met
Autor:
D C Agrawal
Publikováno v:
European Journal of Physics. 30:1173-1179
A simplified version of the Curzon–Ahlborn engine is proposed by assigning the same thermal resistance and same temperature difference at the upper and the lower isotherms of the Carnot cycle. The value of efficiency at the maximum power matches fo
Publikováno v:
Materials Science and Engineering: B. 157:58-65
Dielectric properties and I–V characteristics of sol–gel prepared calcium copper titanate (CCTO) thin films and CCTO/ZrO2 multilayers on Pt/Ti/SiO2/Si substrates are investigated. The CCTO thin films show temperature and frequency independent die
Publikováno v:
Bulletin of Materials Science. 31:55-59
Preparation of sol-gel derived CaCu3Ti4O12 (CCTO) thin films using two different sols and their characterization including their dielectric response are reported. The properties of CCTO films depend heavily on solvents used to prepare the sols. Diele
Autor:
V. J. Menon, D. C. Agrawal
Publikováno v:
Journal of Failure Analysis and Prevention. 7:419-423
We calculate the renewal rate of fused lamps in an organization having large installation of filament lamps. This is achieved by using the standard mortality curve over the specified fractions of the half-life and setting up an algebraic relation for
Publikováno v:
Journal of Electroceramics. 19:229-236
A significant decrease in the dielectric loss and leakage current by introducing Ce in small amounts into BST thin films is demonstrated. The other effects of Ce doping are a lowering of the dielectric constant and a lower temperature coefficient of
Publikováno v:
Materials Letters. 61:3685-3688
The dielectric behavior of sol–gel derived Ba0.80Sr0.20(ZrxTi1−x)O3 (0.0 ≤ x ≤ 0.50) thin films is studied. A relaxor behavior is observed for x ≥ 0.35. The degree of relaxation increases with Zr content. The frequency dependence of the pol
Publikováno v:
Integrated Ferroelectrics. 91:48-61
Thin films of BaZr0.25Ti0.75O3 in which Ba2 + is partially substituted by Ca2 + are prepared by a sol-gel method. Phases and dielectric properties of the films are studied.The crystal structure of BaZr0.25Ti0.75O3 is cubic and does not change with Ca
Autor:
D. C. Agrawal, Aditi Datta
Publikováno v:
Ferroelectrics. 323:57-63
The effect of additives acetylacetone and diethanolamine (DEA) and solvents 2-methoxyethanol and ethylene glycol on phase formation in BST was studied. While it was found difficult to detect the carbonate phase by x-ray diffraction, the FTIR spectra