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Solid State Physics Laboratory, Institute for Physical Research NAS of Armenia

 

Dr. Aram Manukyan

Laboratory of Solid State Physics

Institute for Physical Research of NAS of Armenia, Ashtarak-2

Phone: +37493358840

E-mail: manukyan.ipr@gmail.com

RESEARCH FIELDS AND METHODS

The Institute for Physical Research of National Academy of Sciences of Armenia is a public research organization working in the fields of laser physics, material science and nanoscale structures. In particular, in resent year the Laboratory of Solid State Physics performed investigations in the following areas: magnetic phenomena in metal nanoparticles and nanoalloys embedded in different carbon matrices, magnetism in carbon nanostructures and molecular magnetism.

We have developed a method of solid-phase pyrolysis (SPP) of metal organic compounds. By changing pyrolysis conditions (temperature, time, and pressure), it is possible to fabricate metal (Ni, Fe, Co, Cu, Mg, Zn etc.) nanoparticles dispersed in different carbon structures: graphite-like capsules, carbon nanotubes and fibers as well as carbon coated binary metal nanoalloys. We study a nature of magnetism in metal-carbon nanocomposites and nanoalloys depending on the type of metal, size effects, the role and structure carbon matrix as well as interaction of nanoparticles with carbon structures and interparticle interaction.

Using pure organic precursors in SPP, we prepare carbon nano- and microspheres consisting of graphite-like carbon nanocrystallites with a thickness of 5–15 graphene layers and a width of 10–25 nm. A ferromagnetic carbon based materials with the Curie temperature of 200 K are prepared and investigated.

We have developed a method for intercalation of metal phthalocyanines with alkali metals, as well as a method for preparation of ferromagnetic metal nanoparticles in phthalocyanine matrices. In particular, doping of diamagnetic nickel-phthalocyanines leads to appearance of room temperature molecular ferromagnetism caused by anions of nickel phthalocyanine. In the case of copper and zinc phthalocyanines doping gives high temperature molecular ferromagnetism due to strongly correlated electrons.

We also deal with the application of prepared materials in biomedicine, electronics and energy storage. Magnetic nanoparticles, being biocompatible, can be used for cancer therapy, in particular, magnetic hyperthermia. Metal-carbon nanocomposites and carbon nano- and microspheres are promising materials for high-efficient supercapacitors as well as for filters of liquids and gases, etc.

PERSONNEL

  • Aram Manukyan, Ph.D., Head of the Laboratory
  • Eduard Sharoyan, Prof., Dr. of Sciences, Leading Researcher
  • Armen Mirzakhanyan, Ph.D., Senior Researcher
  • Anri Maloyan, Ph.D., Senior Researcher
  • Vaghram Mekhitaryan, Senior Researcher
  • Marieta Nurijanyan, Senior Laboratory Assistant
  • Armine Ginoyan, Senior Laboratory Assistant
  • Ruben Khachaturyan, Ph.D. student
  • Harutyun Gyulasaryan, Ph.D. student
  • Sargis Aleksanyan, Master student

EQUIPMENT

  • Setup of solid phase pyrolysis
  • Scanning electron microscope
  • Energy-dispersive X-ray microanalyzer
  • Optical spectroscopy
  • X-ray diffractometer
  • Electron paramagnetic and ferromagnetic resonance spectrometer

MAIN PUBLICATIONS

1.      A. Manukyan, A. Mirzakhanyan, L. Sajti, R. Khachaturyan, E. Kaniukov, L. Lobanovsky, and E. Sharoyan, Magnetic Properties of Carbon-Coated Ni Nanoparticles Prepared by Solid-Phase Pyrolysis of Nickel-Phthalocyanine, NANO, 10, 1550089-1 (2015).

2.      A.S. Manukyan, A.A. Mirzakhanyan, R.D. Khachaturyan, A.T. Gyulasaryan, A.N. Kocharian, Yu.I. Yuzyuk, and E.G. Sharoyan, Structure and Magnetic Properties of Carbon Microspheres Prepared by Solid-Phase Pyrolysis of Organic Compounds, Journal of Contemporary Physics (Armenian Academy of Sciences), 50, 195–199 (2015).

3.      A.S. Manukyan, A.A. Mirzakhanyan, T.K. Khachatyran, R.D. Khachaturyan, G.R. Badalyan, E.G. Sharoyan, Synthesis and Characterization of Carbon-Coated Ni1-xCux Ferromagnetic Nanoparticles for Self-Regulating Magnetic Hyperthermia, Armenian Journal of  Physics, 6, 61 (2013).

4.      A.S. Manukyan, A.A. Mirzakhanyan, T.K. Khachatryan, G.R. Badalyan, G.M. Arzumanyan, and E.G. Sharoyan, Investigation of Carbon Microspheres Prepared by Solid-Phase Pyrolysis of Metal-Free Phthalocyanine,  J. Contemp. Phys. (Armenian Ac. Sci.), 48, 43 (2013).

5.      A.S. Manukyan, A.A. Mirzakhanyan, G.R. Badalyan, G.H. Shirinyan, A.G. Fedorenko, N.V. Lianguzov, Yu.I. Yuzyuk, L.A. Bugaev, E.G. Sharoyan, Nickel nanoparticles in carbon structures prepared by solid-phase pyrolysis of nickel-phtalocyanine, J. Nanopart. Res., 14, 982 (2012).

6.      A.S. Manukyan, A.A. Mirzakhanyan, T.K. Khachatryan, G.R. Badalyan, K.G. Abdulvakhidov, L.A. Bugaev, E.G. Sharoyan, Copper-carbon nanocomposites prepared by sold-phase pyrolysis of copper phthalocyanine,  J. Contemp. Phys. (Armenian Ac. Sci.), 47, 292 (2012).

RESEARCH PROJECTS IN THE LAST YEARS

1.      FP7 NANOMAT-EPC: Deployment of Societally Beneficial Nano- and Material Technologies in European Partnership Countries.

2.      Volkswagen Foundation: Structural and Magnetic Transformations in Nickel−Carbon Nanocomposites.

3.      The Armenia-Russia project: Room-temperature ferromagnetism in nickel and cobalt phthalocyanines dopped with alkaline metals.

4.      The Armenia-Belarus project: Structure and Magnetic Properties of Metal-Carbon Nanocomposites.

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