Yuriy N. Kharchenko
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Yuriy N. Kharchenko has a total of 78 co-authors. Here are the top co-authors by number of shared publications:
- Irene M. Lukienko
National Academy of Sciences of Ukraine
11 shared publications - Mykola F. Kharchenko
National Academy of Sciences of Ukraine B. I. Verkin Institute of Low-Temperature Physics and Engineering pr. Nauki 47, Kharkov 61103, Ukraine
11 shared publications - Anatoliy R. Prokopov
Vernadsky Crimean Federal University
10 shared publications - Andrey V. Karavainikov
V. I. Vernadsky Crimean Federal University, 295007 Simferopol, Russia
10 shared publications - Tatyana V. Mikhailova
V.I. Vernadsky Crimean Federal University
10 shared publications - Nina M. Nesterenko
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine , Kharkiv 61103
6 shared publications
Latest Publications
- 1 October 2026
- Published by AIP Publishing in Low Temperature Physics
- Vol. 52 (10) , 1190-1193
On the question of the incommensurate phase at the cooperative Jahn–Teller ordering in KDy(MoO4)2
It is shown that the temperature anomalies in the fine structure of the absorption spectra and birefringence of KDy(MoO4)2, observed during the phase transition in the region of cooperative Jahn–Teller ordering, correlate with different types of ultrasonic anomalies. These anomalies show us that cooperative ordering may be accompanied by the existence of an intermediate phase. Here, we discuss symmetry considerations to show that an incommensurate phase at cooperative ordering in the layered compound KDy(MoO4)2 is possible. The activity of the irreducible representations of Au-type phonons of the rhombic D2h point group may lead to an incommensurate phase in the temperature region of 12–17 K.
- 1 October 2026
- Published by AIP Publishing in Low Temperature Physics
- Vol. 52 (10) , 1190-1193
On the question of the incommensurate phase at the cooperative Jahn–Teller ordering in KDy(MoO4)2
It is shown that the temperature anomalies in the fine structure of the absorption spectra and birefringence of KDy(MoO4)2, observed during the phase transition in the region of cooperative Jahn–Teller ordering, correlate with different types of ultrasonic anomalies. These anomalies show us that cooperative ordering may be accompanied by the existence of an intermediate phase. Here, we discuss symmetry considerations to show that an incommensurate phase at cooperative ordering in the layered compound KDy(MoO4)2 is possible. The activity of the irreducible representations of Au-type phonons of the rhombic D2h point group may lead to an incommensurate phase in the temperature region of 12–17 K.
- 1 October 2026
- Published by AIP Publishing in Low Temperature Physics
- Vol. 52 (10) , 1184-1189
Absorption spectra behavior at the cooperative Jahn–Teller ordering in KDy(MoO4)2
Absorption spectra of KDy(MoO4)2 were studied in the wide temperature range, including the critical temperature of the pseudo-cooperative Jahn–Teller ordering (about 15 K). The spectra were also investigated in the low-temperature phase in external magnetic fields up to 7 T. These data were complemented with the temperature and magnetic fields dependences of birefringence. The possible existence of an intermediate phase (we supposed it as incommensurate) in the temperature range of 12–15 K is discussed. It is supposed that the considered model of the incommensurate phase may be applicable to other isostructural rare-earth rhombic molybdates.
- 1 October 2026
- Published by AIP Publishing in Low Temperature Physics
- Vol. 52 (10) , 1184-1189
Absorption spectra behavior at the cooperative Jahn–Teller ordering in KDy(MoO4)2
Absorption spectra of KDy(MoO4)2 were studied in the wide temperature range, including the critical temperature of the pseudo-cooperative Jahn–Teller ordering (about 15 K). The spectra were also investigated in the low-temperature phase in external magnetic fields up to 7 T. These data were complemented with the temperature and magnetic fields dependences of birefringence. The possible existence of an intermediate phase (we supposed it as incommensurate) in the temperature range of 12–15 K is discussed. It is supposed that the considered model of the incommensurate phase may be applicable to other isostructural rare-earth rhombic molybdates.
- 1 December 2025
- Published by AIP Publishing in Low Temperature Physics
- Vol. 51 (12) , 1497-1503
Non-traditional magneto-optic effects and symmetry of antiferromagnetic states in tetragonal garnet Ca3Mn2Ge3O12
The article presents the results of experimental studies of the anisotropic properties of two unconventional magneto-optical effects: the quadratic magnetic rotation of the plane of polarization of light (quadratic Faraday effect) and the linear magneto-optical effect (magnetic analogue of the electro-optical Pockels effect) in the antiferromagnetic tetragonal garnet crystal Ca3Mn2Ge3O12. The results obtained indicate that the symmetry of the spontaneously emerging antiferromagnetic phase differs from that recognized nowadays. In addition, it was found that when cooling the crystal in a magnetic field applied in a certain direction, it is possible to create a metastable antiferromagnetic state that can exist even in the absence of the field.
- 1 December 2025
- Published by AIP Publishing in Low Temperature Physics
- Vol. 51 (12) , 1497-1503
Non-traditional magneto-optic effects and symmetry of antiferromagnetic states in tetragonal garnet Ca3Mn2Ge3O12
The article presents the results of experimental studies of the anisotropic properties of two unconventional magneto-optical effects: the quadratic magnetic rotation of the plane of polarization of light (quadratic Faraday effect) and the linear magneto-optical effect (magnetic analogue of the electro-optical Pockels effect) in the antiferromagnetic tetragonal garnet crystal Ca3Mn2Ge3O12. The results obtained indicate that the symmetry of the spontaneously emerging antiferromagnetic phase differs from that recognized nowadays. In addition, it was found that when cooling the crystal in a magnetic field applied in a certain direction, it is possible to create a metastable antiferromagnetic state that can exist even in the absence of the field.
- 27 June 2019
- Published by American Physical Society (APS) in Physical Review B
- Vol. 99 (21) , 214440
Magnetic susceptibility and phase transitions inDetailed studies of specific heat, magnetization, and magnetic torque of a single crystal of olivine are presented. Olivines attract attention as promising for application as cathodes in Li-ion batteries and exhibiting a unique set of properties. is the unique olivine, in which antiferromagnetic order develops in two steps, i.e., at 21.8 K, the second-order transition to an incommensurate phase and then, at 20.9 K, the first-order transition to a commensurate phase appears. Specific heat studies, supplemented by the “slope analysis procedure,” revealed a splitting of the specific heat anomaly accompanying the first-order transition, which suggests that actually, these are two coupled transitions, one of which can be the ferroelectric one. The specific heat was measured as a function of temperature for a series of fixed external magnetic field values. As the result, analytical equations describing the phase transition lines in the plane were determined and evolution of a shape of the specific heat anomalies accompanying the phase transitions, observed in the powder sample under influence of , was modeled. Angular dependence of magnetic torque and of magnetization for rotating within the and crystalline planes was measured for several fixed temperature and values. Based on these results, we found a new effect, that we called “off-diagonal nonlinear magnetic susceptibility,” i.e., we found that for each main crystallographic axis , and , an additional component of magnetic susceptibility, proportional to the square of the perpendicular to this axis component of , exists. A phenomenological model of this effect, describing the experimental results correctly, was proposed.- 27 June 2019
- Published by American Physical Society (APS) in Physical Review B
- Vol. 99 (21) , 214440
Magnetic susceptibility and phase transitions inDetailed studies of specific heat, magnetization, and magnetic torque of a single crystal of olivine are presented. Olivines attract attention as promising for application as cathodes in Li-ion batteries and exhibiting a unique set of properties. is the unique olivine, in which antiferromagnetic order develops in two steps, i.e., at 21.8 K, the second-order transition to an incommensurate phase and then, at 20.9 K, the first-order transition to a commensurate phase appears. Specific heat studies, supplemented by the “slope analysis procedure,” revealed a splitting of the specific heat anomaly accompanying the first-order transition, which suggests that actually, these are two coupled transitions, one of which can be the ferroelectric one. The specific heat was measured as a function of temperature for a series of fixed external magnetic field values. As the result, analytical equations describing the phase transition lines in the plane were determined and evolution of a shape of the specific heat anomalies accompanying the phase transitions, observed in the powder sample under influence of , was modeled. Angular dependence of magnetic torque and of magnetization for rotating within the and crystalline planes was measured for several fixed temperature and values. Based on these results, we found a new effect, that we called “off-diagonal nonlinear magnetic susceptibility,” i.e., we found that for each main crystallographic axis , and , an additional component of magnetic susceptibility, proportional to the square of the perpendicular to this axis component of , exists. A phenomenological model of this effect, describing the experimental results correctly, was proposed.- 1 April 2018
- Published by Elsevier in Optical Materials
- Vol. 78, 521-530
Optimization of one-dimensional photonic crystals with double layer magneto-active defect
- 1 April 2018
- Published by Elsevier in Optical Materials
- Vol. 78, 521-530
Optimization of one-dimensional photonic crystals with double layer magneto-active defect
- 1 October 2017
- Published by Elsevier in Journal of Magnetism and Magnetic Materials
- Vol. 440, 175-178
Nano- and micro-scale Bi-substituted iron garnet films for photonics and magneto-optic eddy current defectoscopy
- 1 October 2017
- Published by Elsevier in Journal of Magnetism and Magnetic Materials
- Vol. 440, 175-178
Nano- and micro-scale Bi-substituted iron garnet films for photonics and magneto-optic eddy current defectoscopy
- 1 November 2016
- Published by Pleiades Publishing Ltd in Journal of Experimental and Theoretical Physics
- Vol. 123 (5) , 744-751
One-dimensional magnetophotonic crystals with magnetooptical double layers
One-dimensional magnetophotonic microcavity crystals with nongarnet dielectric mirrors are created and investigated. The defect layers in the magnetophotonic crystals are represented by two...
- 1 November 2016
- Published by Pleiades Publishing Ltd in Journal of Experimental and Theoretical Physics
- Vol. 123 (5) , 744-751
One-dimensional magnetophotonic crystals with magnetooptical double layers
One-dimensional magnetophotonic microcavity crystals with nongarnet dielectric mirrors are created and investigated. The defect layers in the magnetophotonic crystals are represented by two...
- 1 February 2016
- Published by Elsevier in Optical Materials
- Vol. 52, 21-25
Magnetooptics of single and microresonator iron-garnet films at low temperatures
- 1 February 2016
- Published by Elsevier in Optical Materials
- Vol. 52, 21-25
Magnetooptics of single and microresonator iron-garnet films at low temperatures
- 1 June 2015
- Published by Trans Tech Publications, Ltd. in Solid State Phenomena
- Vol. 230, 247-252
Temperature Dependence of Faraday Rotation in Microcavity 1D-MPCs Containing Magneto-Optical Layers with a Compensation Temperature
The low-temperature behavior of optical and magneto-optical properties of microcavity 1D-MPCs with the Bi, Gd, Al-substituted YIG cavity layers of different compositions including compositions with a magnetic compensation temperatures were investigated. The optical transmittance and position of the resonant peaks in optical transmittance and the Faraday rotation spectra were found to be independent of temperature in all types of 1D-MPCs. The temperature dependence of changing the sign of Faraday rotation experienced the hysteresis with a value 8 K in one of two investigated MPCs with magnetic compensation temperature, while in the another MPC the hysteresis did not exceed 1 K. The possible origins of these properties are discussed.
- 1 June 2015
- Published by Trans Tech Publications, Ltd. in Solid State Phenomena
- Vol. 230, 247-252
Temperature Dependence of Faraday Rotation in Microcavity 1D-MPCs Containing Magneto-Optical Layers with a Compensation Temperature
The low-temperature behavior of optical and magneto-optical properties of microcavity 1D-MPCs with the Bi, Gd, Al-substituted YIG cavity layers of different compositions including compositions with a magnetic compensation temperatures were investigated. The optical transmittance and position of the resonant peaks in optical transmittance and the Faraday rotation spectra were found to be independent of temperature in all types of 1D-MPCs. The temperature dependence of changing the sign of Faraday rotation experienced the hysteresis with a value 8 K in one of two investigated MPCs with magnetic compensation temperature, while in the another MPC the hysteresis did not exceed 1 K. The possible origins of these properties are discussed.
- 1 June 2015
- Published by Trans Tech Publications, Ltd. in Solid State Phenomena
- Vol. 230, 241-246
Microcavity One-Dimensional Magnetophotonic Crystals with Double Layer Bi-Substituted Iron Garnet Films: Optical and Magneto-Optical Responses in Transmission and Reflection
Optical and magneto-optical spectra in transmission and reflection and their features for microcavity one-dimensional magnetophotonic crystals with double layer bismuth-substituted iron garnet films are considered. At the first presented the experimental results of magnetic circular dichroism investigations in microcavity one-dimensional magnetophotonic crystals.
- 1 June 2015
- Published by Trans Tech Publications, Ltd. in Solid State Phenomena
- Vol. 230, 241-246
Microcavity One-Dimensional Magnetophotonic Crystals with Double Layer Bi-Substituted Iron Garnet Films: Optical and Magneto-Optical Responses in Transmission and Reflection
Optical and magneto-optical spectra in transmission and reflection and their features for microcavity one-dimensional magnetophotonic crystals with double layer bismuth-substituted iron garnet films are considered. At the first presented the experimental results of magnetic circular dichroism investigations in microcavity one-dimensional magnetophotonic crystals.