IVAN S. KACHUR

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Science of Ukraine 47 Nauky Ave., Kharkiv, 61103 Ukraine
E-mail	kachur@ilt.kharkov.ua

PERSONAL DATA

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Name	IVAN S. KACHUR
Date of birth	10/11/1946
Place of birth	Kharkiv, Ukraine
Residence	UKRAINE
Languages:	Russian, Ukrainian,English (spoken, read and written)

EDUCATION

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Name of Institution	Degrees	Field
Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv	Ph.D. in Solid State Physics (1989)	Magnetism
Chernivtsi State University Department of Physics	M.Sc. in Physics  (1970)	Physics, Optics

FIELD OF SCIENTIFIC INTEREST

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• Optical spectroscopy of magnetic dielectrics.
• Optical and magnetic excitations in antiferromagnets.
• Optical manifestation of magnetic and structural phase transitions.
• Low dimensional magnetic compounds.
• Photoinduced phenomena in dielectrics.

PROFESSIONAL EXPERIENCE

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• 1997-present: Senior Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  
• 1990-1997: Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  
• 1983-1990: Junior Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  
• 1983-1983: Senior Engineer in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
  
• 1970-1983: Engineer in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
  
• 1988-1991: PhD student B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
  

PUBLICATIONS

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Number of papers : 94 ( in the refereed journals - 46).

Selected Publications for last 10 years:

1. Magnetic field induced local structural transformations in the optically excited states ⁵F₂ and ⁵F₃ of HoFe₃(BO₃)₄ single crystal

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, I.A. Gudim

   Journal of Magnetism and Magnetic Materials, V. 476, 1, P. 177, (2019)

2. Specific features of Nd³⁺ Kramers doublets' splitting in an antiferromagnetic crystal NdFe₃(BO₃)₄ in an external magnetic field

   S.L. Gnatchenko, I.S. Kachur, V. Kurnosov, V.G. Piryatinskaya, A.V. Malakhovskii, I.A. Gudim

   Low Temperature Physics, V. 45, P. 928, (2019)

3. Transformation of the HoFe₃(BO₃)₄ absorption spectra at reorientation magnetic transitions and local properties in the excited ⁵F₅ states of the Ho³⁺ ion

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, I.A. Gudim

   Phys. Rev. B, 96, 224430 (2017)

4. Low-temperature absorption spectra and electron structure of HoFe₃(BO₃)₄ single crystal

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, I.A. Gudim

   Low Temperature Physics, 43, № 5, 610-616 (2017)

5. Peculiarities of behavior of Kramers doublet components intensities in NdFe₃(BO₃)₄ in the transverse Zeeman geometry

   I.S. Kachur, V.S. Kurnosov, V.G. Piryatinskaya, A.V. Yeremenko, I.A. Gudim

   Low Temperature Physics, 43, № 5, 590-596 (2017)

6. Changes of the local magnetic properties of the optically excited Nd³⁺ ions and their manifestation in the near IR spectra of the Nd_0.5Gd_0.5Fe₃(BO₃)₄ crystal

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, V.L. Temerov

   Optical Materials 52, 126-133 (2016)

7. Magneto-optical spectra and electron structure of Nd_0.5Gd_0.5Fe₃(BO₃)₄ single crystal

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.L. Sukhachev, V.L. Temerov

   JMMM 401, 517-524 (2016)

8. Local magnetic properties of multiferroic Nd_0.5Gd_0.5Fe₃(BO₃)₄ in the excited states of Nd3+ ion

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.L. Sukhachev, V.L. Temerov

   JMMM 375, 153-163 (2015)

9. Optical and magneto-optical properties of Nd_0.5Gd_0.5Fe₃(BO₃)₄ single crystal in the near IR spectral region

   A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.L. Sukhachev, I.A. Gudim

   J. Alloys Compd. 542, 157-163 (2012)

10. Temperature behavior of fundamental absorption edge in quasi-two-dimensional MnPS₃ crystal

    V.G. Piryatinskaya, I.S. Kachur, V.V. Slavin, A.V. Yeremenko, Yu.M. Vysochanskii

    Low Temperature Physics, 38, № 9, 870-873 (2012)

11. Exciton-magnon structure of optical absorption spectrum of antiferromagnetic MnPS₃

    S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, Yu.M. Vysochanskii, M.I. Gurzan

    Low Temperature Physics, 37, № 2, 144-148 (2011)

12. Influence of magnetic ordering on electronic structure of Tb³⁺ ion in TbFe₃(BO₃)₄ crystal

    A.V. Malakhovskii, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.L. Sukhachev, V.L. Temerov

    Eur. Phys. J. B 80, № 1, 1-10 (2011)

13. Spectroscopic and magnetooptical investigations of spin-reorientation phase transition in TbFe₃(BO₃)₄

    S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, V.A. Bedarev, M.I. Pashchenko, A.V. Malakhovskii, L.N. Bezmaternykh, A.L. Sukhachev, V.L. Temerov

    Phys. Rev. B, V. 80, P. 214417 (1-10), (2009)