Yazar "Güngüneş, Hakan" için listeleme
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Microwave, dielectric and magnetic properties of Mg-Ti substituted Ni-Zn ferrite nanoparticles
Ünal, Bayram; Ünver, İbrahim Saim; Güngüneş, Hakan; Topal, Uğur; Baykal, Abdulhadi; Sözeri, Hüseyin (Elsevier Ltd, 2016)Mg-Ti substituted Ni-Zn spinel ferrites (Ni0.5Zn0.5MgxTixFe2−2xO4, where 0.05≤x≤0.25) have been prepared by conventional solid state reaction method. 1 wt% B2O3 was added to increase the crystal growth at low temperatures. ... -
Mössbauer analysis and cation distribution of Zn substituted BaFe12O19 hexaferrites
Auwal, İsmail A.; Demir Korkmaz, Ayşe; Amir, Md.; Asiri, Sarah Mousa; Baykal, Abdulhadi; Güngüneş, Hakan; Shirsath, Sagar E. (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 ... -
Mössbauer studies and magnetic properties of cubic CuFe2O4 nanoparticles
Amir, Md.; Güngüneş, Hakan; Slimani, Yassine; Tashkandi, N. A.; El Sayed, H. S.; Aldakheel, F.; Sertkol, Murat; Sözeri, Hüseyin; Manikandan, A.; Ercan, İsmail; Baykal, Abdulhadi (Springer New York LLC, 2019)This study reports the preparation and characterization of nanocrystalline spinel powder of cubic copper ferrite nanoparticles (NPs) which have been fabricated via a cost-effective citrate sol–gel approach. The structural ... -
Ni0.4Cu0.2Zn0.4TbxFe2-xO4 nanospinel ferrites: Ultrasonic synthesis and physical properties
Slimani, Yassine; Almessiere, Munirah Abdullah; Demir Korkmaz, Ayşe; Güner, Sadık; Güngüneş, Hakan; Sertkol, Murat; Baykal, Abdulhadi (Elsevier, 2019)The Fe3+ ions were replace with Tb3+ ions as highly paramagnetic rare earth element within the structure of Ni0.4Cu0.2Zn0.4Fe2O4 nano-spinel ferrites (NSFs). The structural, magnetic, spectroscopic and optic properties ... -
Nickel ferrite nanoparticles for simultaneous use in magnetic resonance imaging and magnetic fluid hyperthermia
Umut, Evrim; Coşkun, Mustafa; Pineider, Francesco; Berti, Debora; Güngüneş, Hakan (Academic Press Inc Elsevier Science, 2019)We demonstrate magnetic resonance imaging (MRI) contrast enhancement and ac-field induced heating abilities of tetramethylammoniumhydroxide (TMAH) coated nickel ferrite (NiFe2O4) nanoparticles and discuss the underlying ... -
Oleylamine surface functionalized FeCoyFe2- yO4 (0.0≤y≤1.0) nanoparticles
Amir, M.; Baykal, Abdulhadi; Sözeri, Hüseyin; Güngüneş, Hakan; Shirsath, Sagar E. (Elsevier B.V., 2016)In this study, oleylamine (OAm) capped FeCo y Fe2- y O4 (0.0≤y≤1.0) nanocomposites (NCs) were prepared via a polyol route. Effect of Co3+ ion substitution on structure, morphology and magnetic properties of Fe3O4 nanoparticles ... -
On the origin and age of the Arıburnu Beachrock, Gelibolu Peninsula, Turkey
Erginal, Ahmet Evren; Güneç Kıyak, Nafiye; Bozcu, Mustafa; Ertek, Ahmet; Güngüneş, Hakan; Sungur, Ali; Türker, Gülen (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 ... -
Pandemi sürecinde öğretmenlerin kovid kaygısı, iş tatmini ve tükenmişlik düzeylerinin ilişkisinin incelenmesi
Özdemir Uysal, Şengül (Hitit Üniversitesi, 2022)Covid-19 virüsünün yarattığı pandemi sürecinin tüm sektörlerde çalışan bireyleri etkilediği gibi eğitim sektöründe görev yapan öğretmenleri de etkilediği düşünülmektedir. Bu çalışmanın amacı; öğretmenlerin Covid-19 kaygısı, ... -
Preparation of a novel functionalized magnetic nanobiocomposite as a carrier for protein adsorption
Metin, Ayşegül Ülkü; Doğan, Mustafa; Erdem, Ümit; Babacan, Taner; Güngüneş, Hakan (Taylor & Francis Inc, 2020)This study aims the synthesis of a novel functionalized magnetic nanocarrier based on xanthan gum biopolymer. Glycidyl methacrylate was grafted on xanthan gum chains by radical polymerization reaction using two types of ... -
Some characteristics of thermally induced martensite in Fe-30%Ni-3.6%Mo alloy
Kinetical, morphological and magnetic characteristics of thermally induced martensite in an Fe-30%Ni-3.6%Mo alloy has been studied by scanning electron microscopy, transmission electron microscopy and Mössbauer spectroscopy. ... -
Spin Canting in Silica-Coated Nickel Ferrite (NiFe2O4@SiO2) Nanoparticles: a Mossbauer Spectroscopy Study
Umut, Evrim; Coşkun, Mustafa; Güngüneş, Hakan; Dupuis, Vincent; Kamzin, Alexander S. (Springer, 2021)We present a comparative study on superparamagnetic uncoated and silica-coated NiFe2O4@SiO2 nanoparticles with identical NiFe2O4 cores and two different silica coating thicknesses, focusing on the surface spin arrangement ... -
Sr1-xLaxFe12O19 (0.0≤x≤0.5) hexaferrites: Synthesis, characterizations, hyperfine interactions and magneto-optical properties
Auwal, İsmail A.; Güner, Sadık; Güngüneş, Hakan; Baykal, Abdulhadi (Elsevier Ltd, 2016)A simple sol-gel auto combustion process was used to synthesize La3+ substituted M-type strontium hexaferrite, Sr1-xLaxFe12-xO19 (0.0≤x≤ 0.5). Structural, magnetic, and optical behavior as a function of La3+ substitutions ... -
SrCoxZrxFe12-2xO19 and SrNixZrxFe12-2xO19 hexaferrites: A Comparison Study of AC Susceptibility, FC-ZFC and hyperfine interactions
Almessiere, Munirah Abdullah; Slimani, Yassine; Güngüneş, Hakan; Demir Korkmaz, Ayşe; Baykal, Abdulhadi; Trukhanov, An V.; Yasin, Ghulam (Elsevier, 2020)This study compares the AC susceptibility, FC-ZFC and hyperfine interactions of Sr(CoxZrx) Fe12-2xO19 and Sr(NixZrx)Fe12-2xO19 hexaferrites (HFs) manufactured via ultrasonic route. The formation of M-type hexaferrites have ... -
Strong correlation between Dy3+ concentration, structure, magnetic and microwave properties of the [Ni0.5Co0.5](DyxFe2-x)O-4 nanosized ferrites
Almessiere, Munirah Abdullah; Slimani, Yassine; Trukhanov, Andrei V.; Baykal, Abdulhadi; Güngüneş, Hakan; Trukhanova, E. L.; Kostishin, V. G. (Elsevier Science Inc, 2020)The dysprosium ions (Dy-3(+))-substituted nanosized ferrites (NFs) of composition [Ni0.5Co0.5](DyxFe2-x)O-4 (x <= 0.08) were prepared using the citrate gel process. To analyse the magnetic properties of the samples, the ... -
Structural investigation and hyperfine interactions of BaBixLaxFe12−2xO19 (0.0≤x≤0.5) hexaferrites
Auwal, İsmail A.; Baykal, Abdulhadi; Güngüneş, Hakan; Shirsath, Sagar E. (Elsevier Ltd, 2016)Barium hexaferrite, BaFe12O19, substituted by Bi3+ and La3+ (BaBixLaxFe12−2xO19 where 0.0≤x≤0.5) were prepared by solid state synthesis route. The effect of substituted Bi3+ and La3+ ions on the structure, morphology, ... -
Structural, Magnetic, and Mossbauer Parameters' Evaluation of Sonochemically Synthesized Rare Earth Er3+ and Y3+ Ions-Substituted Manganese-Zinc Nanospinel Ferrites
Almessiere, Munirah Abdullah; Güner, Sadık; Güngüneş, Hakan; Sertkol, Murat; Slimani, Yassine; Badar, Rabail; Baykal, Abdulhadi (Amer Chemical Soc, 2021)The effect of Er3+ and Y3+ ion-co-substituted Mn0.5Zn0.5ErxYxFe2-2xO4 (MZErYF) (x <= 0.10) spinel nanoferrites (SNFs) prepared by a sonochemical approach was investigated. Surface and phase analyses were carried out using ... -
Structural, magneto-optical properties and cation distribution of SrBixLaxYxFe12-3xO19 (0.0≤x≤0.33) hexaferrites
Auwal, İsmail A.; Güngüneş, Hakan; Güner, Sadık; Shirsath, Sagar E.; Sertkol, Murat; Baykal, Abdulhadi (Elsevier Ltd, 2016)SrBixLaxYxFe12-3xO19 (00.0≤x≤0.33) hexaferrites were produced via sol-gel auto combustion. XRD patterns show that all the samples are single-phase M-type strontium hexaferrite (SrM). The magnetic hysteresis (σ-H) loops ... -
Structural, morphological, optical, cation distribution and Mössbauer analysis of Bi3+ substituted strontium hexaferrite
Auwal, İsmail A.; Güngüneş, Hakan; Baykal, Abdulhadi; Güner, Sadık; Shirsath, Sagar E.; Sertkol, Murat (Elsevier Ltd, 2016)Single-phase M-type hexagonal ferrites, SrBixFe12−xO19 (0.0≤x≤1.0), were prepared by a co-precipitation assisted ceramic route. The influence of the Bi3+ substitution on the crystallization of ferrite phase has been examined ... -
Structural, optical and mössbauer study of Ba1 − xCuxFe12O19 (0.5 ≤ x) nano hexaferrites
Asiri, Sarah Mousa; Amir, Md.; Güner, Sadık; Güngüneş, Hakan; Mujasam Batoo, Khalid; Sertkol, Murat; Imran, Ahamad; Baykal, Abdulhadi (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 ... -
Structure, Mössbauer and AC susceptibility of strontium nanohexaferrites: Effect of vanadium ions doping
Almessiere, Munirah Abdullah; Slimani, Yassine; Güngüneş, Hakan; Baykal, Abdulhadi; Alhamed, Nada A.; Trukhanov, Alex V.; Trukhanov, Sergei Valentinovich (Elsevier Ltd, 2019)This study contains information about the effect of V3+ vanadium doping on structural, morphological and magnetic properties of SrFe12-xVxO19 (x = 0.00, 0.02, 0.04, 0.06, 0.08, 0.10) nanohexaferrites. Samples have been ...