Email: grachov@physics.montana.edu
Phone: 406-994-3386
Fax: 406-994-4452
Barnard Hall (EPS) Room 237A, MSU, Bozeman, 59717-3840, MT

Related Links:
Personal Webpage

 

 

Selected Honors, Awards, and Public Outreach/Service:

Manuscript reviewer for: Phys. Rev. and Phys. Rev. Letters, J. Phys. Chem. Sol., J. Phys.: Cond. Matters, Phys. Stat. Sol., J. Magn. Res., Appl. Magn.Res., Sov. Solid State Physics. 

Biographical Sketch:

Education and academic degrees

Professor (Honour degree), Institute for Problems of Materials Sciences, Ukraine
Doctor of Sciences (Habilitation, Phys. and Math.); Inst. of Semiconductors, Kiev, Ukraine
Candidate of Sciences (Ph.D., Phys. and Math.); Inst. of Semiconductors, Kiev, Ukraine
M.Sc. in Physics (Theoretical physics), State University, Kiev, Ukraine

Career / Employment 

2002 – to present        Senior Research Scientist, Physics Department, Montana State University, Bozeman, USA
1997 - 2002                Research Scientist, Osnabrück University, Germany
1994-1996                  1. Physikalische Institut der J.-L. Universität Giessen, Germany
1989-1994                  Leading Researcher, Institute for Materials Sciences, Kiev, Ukraine
1965-1989                  Leading Researcher, Senior Researcher, Researcher, Engineer, Institute of Semiconductors, Ukrainian Academy of Sciences, Ukraine

Visiting professor / visting researcher 

  • University Aix-Marseille 3, Marseille, France. 1994-1995, 2000
  • Department of Physics, Osnabrück University, Germany. 1992, 1997.
  • Huygens Laboratory, Leiden University, Leiden, The Netherlands. 1995
  • Physikalische Institut der J.-L. Universität Giessen, Giessen, Germany 1992-1993 
  • Institute of Physics CS AS, Prague, Czech Republic. 1992-1993

 

 

Interests:

  • Theory of Electron Paramagnetic Resonance (EPR), Nuclear Magnetic Resonance (NMR) and Electron Nuclear Double Resonance (ENDOR)
  • Low-symmetry effects, hidden and/or gauge symmetries in the spin- and other Hamiltonians of high-spin paramagnetic defects and molecular magnets and low-dimensional magnetic clusters with anisotropic interactions
  • Magnetic resonance of extrinsic, intrinsic and radiation defects in inorganic and organic materials (together with experimentalists)
  • Phenomenological and microscopic theories of defect properties
  • Multifrequency magnetic resonance spectroscopy of regularly ordered (crystals), partly ordered (fibers, nanostructures, layered materials) and disordered systems (organic materials, powders),
  • Computer simulation and development of methods for experimental data treatment.

 

 

Selected Publications:

  1. G.Malovichko, V.Bratus, V.Grachev, E.Kokanyan. Electron paramagnetic resonance and electron-nuclear double resonance study of nonequivalent Yb3+ centers in congruent and nearly stoichiometric lithium niobate. Physica Status Solidi (b): 246, No. 1, 215-225 (2009).
  2. G.Malovichko, V.Grachev, J.Jorgensen, M.Meyer, M.Munro, B.Todt, I.Vrable, E.Kokanyan, V.Bratus and S.Okulov. Magnetic resonance study of non-equivalent centers created by 4f-ions in congruent and stoichiometric lithium niobate. MRS Proceedings. 1111. D01-03 (2009).
  3. G.Malovichko, V.Bratus, M.Munro, E.Kokanyan, S.Okulov,V.Grachev. Multifrequency spectroscopy of laser active centers Nd3+ and Yb3+ in nearly stoichiometric LiNbO3. Physica Status Solidi (c), 4, 1346-1351 (2007).
  4. G.Malovichko, V.Grachev, T.Rust, V.Pankratov. Flight to Mars and radiation defects in Li2B4O7and KTiOPO4. Physica Status Solidi (c), 4, 1288-1292 (2007).
  5. G.Malovichko, R.Petersen, Ch.Bäuman, V.Grachev. Second axial Fe3+ center in stoichiometric lithium tantalate. Journal of Applied Physics, 100, 023911 (2006)
  6. B.Briat, V.G.Grachev, G.I.Malovichko, O.F.Schirmer, M.Wöhlecke. Defects in inorganic photorefractive materials and their investigations. Chapter in the book “Springer Series in Optical Sciences, v. 114: Photorefractive Materials and Applications 2”, ed. by P.Gunter and J.-P.Huignard, pp. 9-49 (2006).
  7. G.Malovichko, V.Grachev, S.Okulov, E.Kokanyan, F.Henecker, A.Hofstaetter, O.Schirmer. EPR of Nd3+ in congruent and nearly stoichiometric lithium niobate. Physica Status Solidi (b), 243, 409-415 (2006).
  8. G.Malovichko, V.Grachev, O.Schirmer. Multifrequency spectroscopy of defects in complex oxides. Physica Status Solidi (a), 202, No. 2, 207-221 (2005).

 

 

Grants:

2010-2002, USA:

  • NSF, “Multifrequency spectroscopy of rare-earth and transition ions in optical materials”
  • NASA “Point defects created by radiation in non-linear optical crystals used for space-based laser systems”
  • DURIP DoD, “Multifrequency system for the study of defects in solids”
  • National Foundation of Science and Advanced Technologies / CRDF, USA “Periodically poled lithium niobate crystals - application to wavelength-conversion devices”.
  • NASA EPSCoR “Thermal stability of radiation defects in non-linear optical crystals”
  • Montana Board of Research and Commercialization Technology, “Development of advanced materials for optoelectronics and optical communication technologies”
  • NASA “Identification of atomic defects due to radiation in non-linear optical crystals used for space-based laser systems”
  • NSF, “Impurity locations and mechanisms of charge compensation in stoichiometric lithium niobate and lithium tantalate crystals”

 

 

Selected Talks:

  1. V.Grachev, J.Jorgensen, M.Meyer, V.Pankratov, Ya.Burak, A.Hunt, G.Malovichko. Trace Impurities, Intrinsic and Radiation Defects in Oxide Materials. International Scientific Workshop. "Oxide Materials for Electronic Engineering - fabrication, properties and application". Lviv, Ukraine (2009).
  2. V.Grachev, G. Malovichko. Theory of magnetic resonance of ferroelectrics and multiferroics. NSF EPSCoR STC Workshop, Fayetteville, Arkansas, USA (2008).
  3. G.Malovichko, V.Bratus, E.Kokanyan, M.Meyer, M.Munro, S.Okulov, I.Vrable, V.Grachev. Magnetic Resonance of Rare-Earth Impurities in Lithium Niobate. Workshop “Storage and Manipulation of Quantum Information in Optically-Addressed Solids”, Bozeman, Montana, USA (2008).
  4. V.Grachev, G.Malovichko, T.Rust. Flight to Mars and radiation defects in oxides. Europhysical Conference on Defects in Insulating Materials (EURODIM 2006), Milan, Italy (2006)
  5.  V.Grachev, G. Malovichko. Luminescence, optical absorption and magnetic resonance of transition and rare earth impurities in lithium niobate. 6th European Conference on Luminescence Detectors and Transformers of Ionizing Radiation (LUMDETR 2006), Lviv, Ukraine (2006).
  6. V.Grachev, G.Malovichko, O.Schirmer. Comparison of the EPR and ENDOR data of LiNbO3:Fe, LiTaO3:Fe and KTaO3:Fe. Photorefractive Workshop, Florida, USA (2003).