Studies on processing parameters of high-permeability manganese-zinc ferrite ceramics

Kayıhan, Ağça Bağcan


Studies on the mechanism of base-catalyzed decomposition of bicyclic endoperoxides
Mete, E; Altundas, R; Secen, H; Balcı, Metin (2003-01-01)
Kinetic studies were performed to clarify the Kornblum-Delamare reaction mechanism of bicyclic endoperoxides. Ascaridol and 1,4-diphenyl-2,3-dioxa-bicyclo[2.2.2]oct-5-ene, not having alpha-protons, did not provide any reaction with bases. Reaction with different bases has revealed that reaction rates for the base-catalyzed decomposition of 2,3-dioxa-bicyclo[2.2.2]oct-5-ene depend strongly on the base strength. The stronger the base used, the faster the conversion rate. Reaction rate values k of endoperoxide...
Studies on interaction of electromagnetic waves with barium hexaferrite ceramics
Gürkan, Nurdan; Timuçin, Muharrem; Department of Metallurgical and Materials Engineering (2008)
M-type barium hexaferrite powders doped with titanium and/or cobalt have been synthesized according to the stochiometric formulations BaFe(12 (4/3)x)TixO19, BaFe12-xCoxO19 , BaFe12-2xTixCoxO19 (x varying from 0 to 1.5 with an increment of 0.5) by the mixed oxide approach. The powders were used to manufacture small ceramic tiles by sintering each composition at 1250 °C with soaking times ranging from 1 to 16 hours. XRD work revealed formation of the magnetoplumbite crystal structure in all ceramics. The var...
Studies on photochemical vapor generation of selenium
Çetmeli , Melis; Ertaş, Gülay; Department of Chemistry (2019)
Selenium is a significant trace element for human health. Selenium can be essential or toxic for human body depending on its concentration. Within the scope of this thesis, photochemical vapor generation tungsten coil atomization technique has been studied for the determination of selenium. Volatile selenium compounds were generated by exposure of UV light of the solution containing selenium and acetic acid. To increase sensitivity of photochemical vapor generation system, the technique was combined with tu...
Studies on device properties of an n-AgIn5Se8/p-Si heterojunction diode
KALELİ, Murat; Parlak, Mehmet; Ercelebi, C. (2011-10-12)
In this study, polycrystalline thin films of ternary AgIn5Se8 compounds with n-type conductivity were deposited on p-type Si substrates from the powder of a Ag3In5Se9 single crystal by a thermal evaporation technique. Transport and photo-transport properties of the In/n-AgIn5Se8/p-Si/Al sandwich structure were investigated by analyzing temperature-dependent dc current-voltage (I-V), and photo-response measurements carried out in the temperature range of 200-360 K. In order to obtain the series resistance (R...
Studies on synthesis of novel a-pyrone derivatives
Akdağ, Akın; Tarhan, Okan; Türker, Lemi; Department of Chemistry (1999)
Citation Formats
A. B. Kayıhan, “Studies on processing parameters of high-permeability manganese-zinc ferrite ceramics,” Middle East Technical University, 2001.