Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 191, listelenen: 61-80
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On the origin and age of the Arıburnu Beachrock, Gelibolu Peninsula, Turkey
(TÜBİTAK, 2008)Bu çalışmada Gelibolu Yarımadası’nda, Arıburnu kıyılarındaki yalıtaşı oluşumu arazi verileri, ince kesit yorumlamaları, ICP-AES, EDS ve SEM analizleri ve OSL yaşlandırması ile ele alındı. Analizler yalıtaşı çimentosu içinde ... -
Al/Al2o3/P-Si yapısının Co gaz algılama özellikleri
(Gazi Üniversitesi, 2015)Bu çalışmada Al/Al2O3/p-Si yapısının gaz algılama özellikleri incelenmiştir. Al2O3 metal oksit yapısı atomik tabaka biriktirme (ALD) metoduyla üretilmiştir. Üretilen yapının farklı sıcaklıklar (300-450K) ve farklı CO gaz ... -
Study on the reverse bias carrier transport mechanism in Au/TiO2/n-4H-SiC structure
(American Scientific Publishers, 2016)In this paper we examine the reverse bias carrier transport mechanism in Au/TiO2/n-4H-SiC structure. The current-voltage-temperature (IR-V-T) plots have been investigated in the temperature range of 200-380 K. Experimental ... -
Benzotriazole and benzodithiophene containing medium band gap polymer for bulk heterojunction polymer solar cell applications
(John Wiley and Sons Inc., 2014)An alternating donor‐acceptor copolymer based on a benzotriazole and benzodithiophene was synthesized and selenophene was incorporated as π‐bridge. The photovoltaic and optical properties of polymer were studied. The ... -
Silafluorene-based polymers for electrochromic and polymer solar cell applications
(John Wiley and Sons Inc., 2015)In this study, four novel silafluorene (SiF) and benzotriazole (Btz) bearing conjugated polymers are synthesized. In the context of electrochemical and optical studies, these polymers are promising materials both for ... -
Electrical properties of Al/p-Si structure with Al2O3 thin film fabricated by atomic layer deposition system
(World Scientific Publishing Co. Pte Ltd, 2017)Al2O3 insulator layer was deposited by atomic layer deposition (ALD) technique on p-type Si ⟨111⟩ and the Al/Al2O3/p-Si metal/insulator/semiconductor (MIS) structures were fabricated. The current–voltage (I−V) characteristics ... -
Embedded atom method-based geometry optimization aspects of body-centered cubic metals
(2013)We present embedded atom method-based geometry optimization calculations for Fe, Cr, Mo, Nb, Ta, V and W body-centered cubic metals with Finnis - Sinclair potentials. After the optimization, we determine their typical ... -
Traps distribution in sol-gel synthesized ZnO nanoparticles
(Elsevier B.V., 2019)The distribution of shallow traps within the sol-gel synthesized ZnO nanoparticles was investigated using thermoluminescence (TL) experiments in the 10–300 K temperature range. TL measurements presented two overlapped peaks ... -
Elastic and related properties of Si under hydrostatic pressure calculated using modified embedded atom method
(Institute of Physics Publishing, 2016)Although several theoretical works were performed to describe the high pressure behavior of typical cubic elastic constants of cubic diamond silicon (dc-Si), some of the obtained results of these studies still remain ... -
Dielectric properties and ac electrical conductivity of MIS structures in the wide frequency and temperature range
(National Institute of Optoelectronics, 2010)Dielectric properties and electrical conductivity of the Al/SiO2/p-Si (MIS) structures have been investigated in the temperature and frequency range of 80-400 K and 1 kHz-100 kHz, respectively. Experimental results show ... -
Effect of Si on austenite stabilization, martensite morphology, and magnetic properties in Fe-26%Ni-x%Si alloys
(2011)The effect of Si on the austenite stabilization, martensite morphology, and magnetic properties in Fe-26%Ni-x%Si (x=3.5, 5, and 6) alloys have been studied by means of transmission electron microscopy (TEM) and Mössbauer ... -
Magnetic properties of FeMnyCoyFe2−2yO4@Oleylamine nanocomposite with cation distribution
(Springer New York LLC, 2017)In this study, oleylamine (OAm) capped FeMnyCoyFe2−2yO4 (0.0 ≤ y ≤ 0.4) nanocomposites (NCs) were prepared via the polyol route and the impact of bimetallic Co3+ and Mn3+ ions on the structural and magnetic properties of ... -
Magnetic properties and cation distribution of bimetallic (Mn–Co) doped NiFe2O4 nanoparticles
(Springer New York LLC, 2017)Nickel ferrite (NiFe2O4), an inverse spinel crystal structure and a soft transition metal oxide, contemplated as a good magnetic semiconducting material with low coercivity and saturation magnetization (M s). In this study, ... -
Synthesis and characterization of Cu–Mn substituted SrFe12O19 hexaferrites
(Springer New York LLC, 2018)In this study, bimetallic (Cu–Mn) substituted SrFe12O19 hexaferrites [Sr1−2xMnxCuxFe12O19 (0.0 ≤ x ≤ 0.1)] were synthesized via sol–gel auto-combustion approach. The effect of bimetallic substitution on structure, morphology ... -
Structural, optical and mössbauer study of Ba1 − xCuxFe12O19 (0.5 ≤ x) nano hexaferrites
(Springer New York LLC, 2018)In this study, a novel Ba1−xCuxFe12O19 (0.5 ≤ x) nano-hexaferrites were prepared by a simple and cost-effective sol–gel auto-combustion method using barium nitrates, iron nitrate, copper (II) acetate monohydrate and citric ... -
Magneto optical properties and hperfine interactions of Cr3+ Ion substituted copper ferrite nanoparticles
(Springer New York LLC, 2018)Spinel CuCrxFe2−xO4 (0.0 ≤ y ≤ 1.0) nanoparticles were fabricated by co-precipitation. X-ray diffraction proved the pureness and cubic crystal assembly of products which have the crystallite sizes varying between 16 and ... -
Synthesis and structural and magnetic characterization of BaZn x Fe12−x O19 hexaferrite: hyperfine interactions
(Springer New York LLC, 2017)To study the effect of Zn substitution on structural magnetic properties and hyperfine interactions of barium hexaferrite, BaFe12−x Zn x O19 (0.0≤x≤0.3) hexaferrites were synthesized via sol-gel auto-combustion technique. ... -
Mössbauer analysis and cation distribution of Zn substituted BaFe12O19 hexaferrites
(Springer New York LLC, 2018)Barium hexaferrite is a well-known hard magnetic material. Doping using nonmagnetic cation such as Zn2+ were found to enhance magnetization owing to preferential tetrahedral site (4 f 1) occupancy of the zinc. However, the ... -
Structural and magnetic properties of thermal- and deformation-induced martensite in an Fe-27%Ni-4%Mn-1%Zn alloy
(Springer New York LLC, 2018)Deformation- and thermal-induced martensite properties were examined according to existing martensite morphology and magnetic properties for same prior austenite homogenization conditions in Fe-27%Ni-4%Mn-1%Zn alloy. ... -
Magnetic and kinetical properties of Fe-27%Ni-4%Mn and Fe-27%Ni-4%Mn-2%Zn alloys investigated by VSM and DSC
(Springer New York LLC, 2018)We report on the structural, thermal, and magnetic properties of thermally induced martensite in Fe-27%Ni-4%Mn and Fe-27%Ni-4%Mn-2%Zn alloys. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and ...
