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
Telephone	+38(057)341-08-02 (office)
Fax	+38(057)340-33-70
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
Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv	Post-Graduate (1980-1984)	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 effects in low dimensional magnetic systems and multiferroics.
• Optical manifestation of magnetic and structural phase transitions.
• Low dimensional magnetic compounds.
• Photoinduced phenomena in magnetically ordered crystals.

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 : 115 ( in the refereed journals - 57).

Selected Publications for last 10 years:

1. Inversion of exchange interaction sign of Nd3+ excited states and its manifestation in optical absorption spectra of NdFe₃(BO₃)₄ crystal

   I.S. Kachur, V.S. Kurnosov, V.G. Piryatinskaya

   Low Temperature Physics, V. 50, 5, P. 425-427, (2024)




2. Anomalous behavior of magnetic linear dichroism in HoFe₃(BO₃)₄ crystal with spiral magnetic ordering

   I.S. Kachur, V.G. Piryatinskaya

   Low Temperature Physics, V. 49, 2, P. 261-264, (2023)




3. Magnetic linear dichroism and features of the local magnetic structure of HoFe₃(BO₃)₄ single crystal in ⁵F₂ and ⁵F₃ excited states of Ho³⁺ ion

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

   Journal of Magnetism and Magnetic Materials, V. 536, P. 168106, (2021)




4. 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)




5. 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)




6. 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)




7. 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)




8. 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)




9. 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)




10. 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)




11. 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)