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    The effect of back electrode on the formation of electrodeposited CoNiFe magnetic nanotubes and nanowires
    (Elsevier Science Bv, 2010) Atalay, F. E.; Kaya, H.; Yagmur, V.; Tari, S.; Atalay, S.; Avsar, D.
    The electrodeposition of cobalt + nickel + iron alloy nanostructures in aqueous sulfate solution has been studied using vitreous templates placed on highly ordered porous anodic alumina oxide (AAO). During the deposition process some electrochemical bath parameters such as ion content, deposition voltage, pH and temperature of solution were kept constant. The morphological properties of the nanostructures were studied by scanning electron microscopy (SEM) and the chemical composition was determined by examination of the energy dispersive X-ray (EDX) spectra. The magnetic behaviour of the arrays was determined with a vibrating sample magnetometer (VSM). Voltammetric and galvanostatic results indicate that the back electrodes placed on AAO plays the main role in obtaining nanowire or nanotube structured material. (C) 2009 Elsevier B. V. All rights reserved.
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    Nanowires of Lead-Free Solder Alloy SnCuAg
    (Hindawi Ltd, 2011) Atalay, F. E.; Avsar, D.; Kaya, H.; Yagmur, V.; Atalay, S.; Seckin, T.
    Ternary Sn88Ag5Cu7, Sn93Ag4Cu3, Sn58Ag18Cu24, Sn78Ag16Cu6, Sn90Ag4Cu6, Sn87Ag4Cu9 alloy nanowires were produced at various values of deposition potential by dc electrodeposition on highly ordered porous anodic alumina oxide (AAO) templates. During the deposition process some parameters, such as ion content, deposition time, pH, and temperature of the solution, were kept constant. The diameter and length of regular Sn93Ag4Cu3 nanowires electrodeposited at -1V were determined by scanning electron microscopy (SEM) to be approximately 200-250 nm and 7-8 mu m, respectively. Differential scanning calorimetry (DSC) results indicate that the melting onset temperature of Sn93Ag4Cu3 nanowires is about 204 degrees C.
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    Production of Y-Ba-Cu-O Nanowires and Nanotubes by Electrochemical Method
    (Polish Acad Sciences Inst Physics, 2013) Kaya, H.; Atalay, F. E.; Avsar, D.; Yagmur, V.; Atalay, S.
    In this work, the technological aspects of great importance YBa2Cu3O7-x superconducting materials were produced in the form of nanotube by electrochemical method. The electrochemical deposition conditions for the Y-Ba-Cu deposition in nanoporous Al2O3 were investigated. The heat treatment was applied to Y-Ba-Cu/Al2O3 nanopatterns, to form superconductive phase. The resulting nanostructures were found to be in length 4-5 mu m, 177-210 nm in diameter. The produced nanostructures at -4 V and more positive potentials were Y-Ba-Cu nanowires, while the nanostructures deposited at the more negative potentials were of nanotube form. DOI: 10.12693/APhysPolA.123.209
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    The synthesis of ferromagnetic La0.75Ca0.25MnO3 nanowires by a sol-gel method
    (Natl Inst Optoelectronics, 2010) Atalay, F. E.; Yagmur, V.; Atalay, S.; Kaya, H.; Tari, S.; Avsar, D.
    In this study, densely packed La0.75Ca0.25MnO3 (LCMO) nanowires were synthesized within a porous anodic aluminum oxide (AAO) template by means of a sol-gel method using nitrate as raw material and ethylene glycol as the chelating agent. It was observed from measurements of hysteresis curves that the magnetic behavior of the LCMO nanowire arrays was strongly dependent on the pH of the solution. As it has been reported that bulk polycrystalline La0.75Ca0.25MnO3 samples have a Curie temperature of 224 K [1], it is interesting to find that nanowires produced at pH 3 show ferromagnetic properties at room temperature