MAGNETIC PROPERTIES OF MATTER

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RESEARCH GROUP OF MAGNETIC PROPERTIES OF MATTER

Research Team

Assis. Prof. Dr. Cengiz OKAY (cokay@marmara.edu.tr)

Prof. Dr. Mustafa ALEVLİ (mustafaalevli@marmara.edu.tr)

Collobrators

Prof.Dr. Bulat Rameev (GTE, Physics Department)

Prof. Dr. Bekir AKTAŞ (GTE, Physics Department

Prof. Dr. Arunava GUPTA (The University of Alabama, MINT Center, USA)

Assoc. Prof. Dr. Fikret YILDIZ (GTE, Physics Department)

Assis. Prof. Dr.Cihat Boyraz (Marmara University)

Research Topics

  • Ferromagnetic Resonance (FMR),
  • Electron Paramagnetic Resoance (EPR)
  • Magnetism
  • Spintronic
  • Magnetic-semiconductors
  • Thin Films
  • Metallic Alloys

One example of Investigations of Ferromagnetic Resonance (FMR)

Assist. Prof. Dr. Cengiz OKAY

Ferromagnetic Resonance Investigations of Cobalt (Co+) and Iron (Fe+)  Implanted Polyimides (PI) and Polyethylene terephthalate (PET)  Films

 

The synthesis and characterization of nanosized magnetic particles is the subject of intense scientific researches due to important applications of nanostructured magnetic materials in diverse areas, such as magnetic recording and information storage, magnetosensor electronics, magnetic resonance imaging enhancement, ferrofluids, magnetic refrigeration, color imaging, medical diagnostics, etc.[1].

Among different techniques, which are available for preparation of the metal nanoparticles in dielectric matrices, ion implantation method is a very attractive and promising method because of peculiar advantages, such as easy control of the metal distribution and concentration, availability of any metal-dielectric combinations, overcoming the solubility limits constrained by chemical and thermodynamical equilibrium of the host matrix and the metal impurity [2]. The crystalline structure, size and morphology of the ion-synthesized nanoparticles, as well the local particle concentration can be controlled to some extent by regimes of ion implantation, by crystallinity and chemical composition of dielectric substrates and by post-implanted thermal treatments. In this way the different kinds of the metal-based nanoparticles may be formed in the irradiated dielectrics by ion implantation.

The precipitation phenomenon in different dielectrics (alimina, silica, glasses, etc) implanted transition metal ions has been studied extensively in the last three decades [[3]], because ion implantation is ideally suited for fabrication of thin film magnetic media and planar devises of magnetosensor electronics. The formation of magnetic nanophase of pure transition metals in irradiated matrices has been reported by a number of researches at higher doses (>1016 ions/cm2). However, only a few papers related to the synthesis of magnetic phase in polymers via ion implantation were published [[4][. Meanwhile, polymer materials are used widely in various technological applications because of their unique properties, such as low density, plasticity and ability to form intricate shapes, versatile electrical and optical properties and low manufacturing cost.

In the present study, new composite materials were formed bу the high dose implantation of cobalt ions in polyimide (PI) and Polyethylene terephthalate (PET) foils. The formation of nanoscaled cobalt particles in thin irradiated layers of the polymer was detected by transmission electron microscopy (Tesla-BS500). The FMR absorption spectra of  cobalt and iron-implanted polyimides and Polyethylene terephthalate (PET) foils were obtained on Bruker EMX electron spin resonance spectrometer at X-band frequency 9.54 GHz,

 

 

 Papers published in International Journals (Scientation İndex) :

1. “Optical and Magnetic properties of Ni implanted and post-annealed ZnO thin films”, C. Okay, B.Z. Rameev, S. Güler, R.I. Khaibullin, R.R. Khakimova, Yu.N. Osin, N. Akdoğan, A.I. Gumarov, A. Nefedov, H. Zabel, and B. Aktaş, . Applied Physics A,  Vol. 104, 2011,  667-675.

2. “Ferromagnetic Resonance Study of Iron İmplanted PET Foils”, C.Okay, B.Z.Rameev, R.I.Khaibullin, M.Okutan, F.Yıldız, V.N.Popok, B.Aktaş, Physica Status Solidi (a)" Vol. 203.7.2006,  1525–1532.

3. Ferromagnetic Resonance Invesitagions of Cobalt Implanted  Polymides”,B.Z.Rameev, C.Okay, F.Yıldız, R.I.Khaibullin, V.N.Popok, B.Aktaş, Journal of Magnetism and Magnetic Materials  278 (2004) 164-171.

4. “Ion Synthesis and FMR Studies of Iron and Cobalt Nanoparticles in Polymides”, B.Z.Rameev, F.Yıldız, B.Aktaş, C.Okay, R.I.Khaibullin, E.P.Zheglov, J.C.Pivin, L. R.Tagirov, . Microelectronic Engineering  69 (2003) 330-335.

5. “Ion Synthesis of Iron Granüler films in Polymide”, R.I.Khaibullin, V.N.Popok, V.V.Bazarov, E.P.Zheglov, B.Z.Rameev, C.Okay, L.R.Tagirov and B.Aktaş, , Nuclear Instruments and Methods in Phyics Research B 191 (2002)  810-814.

 

 Papers published in International Journals  :

 1. R.I.Khaibullin, B.Z.Rameev, A.L.Stepanov, C.Okay, V.A.Zhikharev, I.B.Khaibullin, L.R.Tagirov, B.Aktaş, “Ion Beam Synthesis of  Magnetic Nanoparticles in Polymers” Nanostuctured Magnetic Materials and their Applications, 33-54, (2004) Kluwer Academic Publisher, Neitherland.

 2. C.Okay, B.Rameev, F.Yıldız, R.I.Khaibullin and B.Aktaş. “Ferromagnetic Resonance and Electron Microscopy Studies of Cobalt Granuler Films in Polymides Synthesized by Ion Implantation Technique.” Balkan Physics Letter, 10 (4) (2002) 191-199.

Congress and  Symposium

1. C. Okay, B. Rameev, V. F. Valeev, R.I. Khaibullin," Ferromagnetic Resonance Investigations of Fe-implanted Rutiles", 11th Nanoscience and Nanotechnology Conference (NanoTR-11), 22 -25 June, 2015, pp.3P/12,Ankara, Turkey.

2. C. Okay, B.Z. Rameev, R.I. KHAIBULLIN, R.R. KHAKIMOVA,  S. Güler, B. Aktaş, N. AKDOĞAN, A. NEFEDOV,“Room-temperature Ferromagnetisms in Ni-implanted ZnO Thin Films” International Conference on Superconductivity and Magnetism ICSM 2010 April 25-30 2010, pp.505, Antalya Turkey.

3. C. Okay, B.Z. Rameev, R.I. Khaibullin, R.R. Abdullina, S. Güler, B. Aktaş “Magnetic Resonance and VSM Studies of Ni-Implanted ZnO Thin Films“ EUROMAR 2008, Magnetic Resonance for the Future, July 6–11, 2008, pp.220, St. Petersburg, Russia

4. B.Z.Rameev, R.I.Khaibullin, S.Güler, H.Bayrakdar, B.Aktaş, C.Okay,“Magnetic Resonance and VSM Studies of Co and Fe Implanted TiO2 Rutile Single Crystals” International Conference on Nanoscale Magnetism (ICNM), June 25-29, 2007, pp.212 İstanbul, Turkey.

5. C.Okay, B.Rameev, R.I.Khaibullin, I.B.Khaibullin, F.Yıldız, M.Okutan, V.N.Popok, B.Aktaş, “FMR Investigations of Iron-Implanted Polyethelene Terepthalate Foils”, International Conference on Nanoscale Magnetism (ICNM), July 3-7, 2005, pp.60, Gebze, Turkey.

6. R.I.Khaibullin, C.Okay,  B.Rameev, M.Okutan, F.Yıldız, V.N.Popok, V.A.Zhikharev, B.Aktaş,  I.B..Khaibullin, “Magnetic Percolation Transition in Polyethelene Terepthalate İmplanted by İron İons with Hıgh Fluences”, Nanoscale Properties of Condensed Matter Probed by Resonance Phonomena,  NanoRes-2004, 15-19 August, pp.80, Kazan, Russia.

7. R.I.Khaibullin, B.Rameev, C.Okay,  E.P.Zheglov, V.A.Zhikharev, L.R.Tagirov, “Ion Synthesis of Magnetic Nanoparticles in Polymers”,Advanced Research Workshop, Nanostructured Magnetic Materials and Their Applications, ARW NMMA-2003 July 1-4, 2003, pp.12, İstanbul- Turkey.

8. R.I.Khaibullin, V.N.Popok, B.Z.Rameev, V.V.Bazarov, C.Okay, L.R.Tagirov, “Structural, Magnetic and Electrical Studies of Fe-Implanted Polymides”, International Workshop on Polymer/Metal Nanocomposites, Faculty of Engineering Christian-Albrechts University Kiel, September 22-23, 2003 pp.23 Germany.

9. B.Rameev, C.Okay, F.Yıldız, R.I.Khaibullin and B.Aktaş, “Ferromagnetic Resonance Investigations of Cobalt Implanted Polymides” Moscow International Symposium on Magnetizm. (MISM 2002) June 20-24 2002, pp.265, Dedicated to the 250 Anniversary of Moscow State University, Russia.

10. B.Rameev, F.Yıldız, B.Aktaş, C.Okay, R.I.Khaibullin, E.P.Zheglov, J.C.Pivin and L.R.Tagirov. “Ion Synthesis and FMR Studies of Cobalt and Iron Nanoparticles Implanted in Polymides” Nano and Giga Challenges in Microelectronics Research and Oppurtunities in Russia, Symposium and Summer School, September 10-13 (2002) pp.212, Moscow, Russia.

11. B.Rameev, C.Okay, F.Yıldız, R.I.Khaibullin, S.I.Tarapov, L.R.Tagirov and B.Aktaş, “Electron Microscopy and Magnetic Resonance Investigations of Iron Implanted Polymides” Workshop on Nanostructured Magnetic Materials and Their Applications (NMMA-2001) , September 3-7 2001, pp.11, İstanbul/Turkey.

12. R.I.Khaibullin, V.N.Popok, V.V.Bazarov, E.P.Zheglov, B.Rameev, C.Okay and B.Aktaş, “Ion Synthesis of Iron and Cobalt Granüler Films in Polymide”, Radiation Effect in Insulator REI-11, Congress Center “Caixa Geral de Depositos” September 3-7 2001, pp.203-204, Lisbon, Portugal.

 

Projects (Continnued) 

1. " Prepeartion of  of Sputter Deposited Cobalt-Gold Magnetic Thin Films, Investigation of Structural and Magnetic Properties” Marmara Üniversity, (BAPKO), İstanbul-Türkiye, 11 Mach 2016-11 March 2018.

 

Projects (Finished)

1. “ Modern Physics Laboratory” , Marmara Üniversity, (BAPKO), İstanbul-Türkiye, June 2013-june 2015.

2. " Investigation of Structural and Magnetic Properties of cobalt and iron implanted Poymide (PI) " Marmara Üniversity, (BAPKO), İstanbul-Türkiye, 2006.

3. "Ferromagnetic Resonance Investigations of Iron (Fe+)  Implanted Polyethylene terephthalate (PET)  Films” Marmara Üniversity, (BAPKO), İstanbul-Türkiye 2004.

 

Graduated Students MSc and PhD

  1. Mehmet Itri Imanlı, MSc, “Homojen Uzaylarda Lineer Olmayan Shrodinger Denklemleri” Marmara Üniversitesi Fen Bilimleri Enstitüsü, 2006
  2. Özlem Akman, MSc, “Manyetik Yariletken Filmlerin Hazırlanması ve Karakterizasyonu” Marmara Üniversitesi; Fen Bilimleri Enstitüsü, 2008
  3. Hayriye Karaca, MSc, “Katkılı-Katkısız Kalay-Oksid (SnO2) Nanoparçacık Devre Elemanlarının Gaz Algılama Özelliklerinin Incelenmesi”, Marmara Üniversitesi Fen Bilimleri Enstitüsü, 2008
  4. Hanife Zorlu, MSc. Marmara Üniversitesi Fen Bilimleri Enstitüsü, 2009
  5. Tugba Duran, MSc., Marmara Üniversitesi, Fen Bilimleri Enstitüsü, Fizik, 2011

 

Laboratories

  • Spincoater  Model P6700 kaplama ünitesi
  • Isıl Buharlaştırma: EDWARDS AUTO 550
  • Lenton marka 1500 oC silindirik yatay fırın (10 kW)
  • İki zonlu 1250 oC silindirik fırın Quartz örnek yuvalı ve gaz ve basınç kontrollü (5 kW)
  • Tek zonlu 1250 oC silindirik fırın Quartz örnek yuvalı ve gaz ve basınç kontrollü (2 Adet) (5 kW)
  • RF indiksiyon fırını (5 kW)
  • LakeShore 330 Sıcaklık kontrolörü
  • Deiyonize su sistemi
  • Keithley Model 3330 LCZ metre
  • Keithley Model 776 programlanabilir counter timer
  • Keithley Model 740 System scanning Thermometer
  • Keithley Model 2000 Multimetre
  • Keithley Model 6517A Electrometer/ High Resistance meter
  • Keithley Model 2400 Sourcemeter
  • Keithley Model 617 Programmable Electrometer
  • Stanford Research Lock-in Amplifier Model SR 830
  • Kapalı Devre Sıvı Helyum Kryostatı (LEYBOLD RDK 10-300K)
  • Sıcaklık Kontrol ( Leybold LTC 60 Model)
  • Sonorex Super 10 P Model Ultrasonik Temizleyici
  • LEICA DM LM Metal Mikroskobu
  • 4 Adet Heastings 200/202 Series Mass Flowmeter ve Kontrol Ünitesi
  • Laboratuar Tipi Osiloskoplar ve Güç Kaynakları
  • Mekanik Pompalar
  • Çeşitli gaz silindirleri
  • HP Recorder ve HP-Plotter HP 7475
  • Bilgisayarlar ve IEEE-488 bilgisayar arabirim bağlantı kartları
  • Hidrolik Press (10 Ton)

 

 

 

 

 

 

 

This page updated by Physics on 10.04.2020 23:36:34

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