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1.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Aplesnin S. S., Kharkov A. M., Filipson G. Y.
Заглавие
: Magnetic capacitance in variable-valence manganese sulfides
Место публикации
: Phys. Status Solidi B. - 2020. - Vol. 257, Is. 5. - Ст.1900637. - ISSN 03701972 (ISSN),
DOI
10.1002/pssb.201900637
Примечания
: Cited References: 12. - This study was supported by the Russian Foundation for Basic Research No. 18-32-00079 mol_a. The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science No. 18-42-240001 r_a
Аннотация:
The permittivity of TmxMn1–xS (0 < x < 0.15) solid solutions is measured in the frequency range of 102–106 Hz at temperatures of 300–500 K in magnetic fields of up to 12 kOe. The migration and relaxation conductivity contributions to the electric polarization are established. The relaxation time and activation energy are calculated using the Debye model. A decrease in the capacitance and relaxation time in a magnetic field is observed. The electron polarization relaxation channel provided by recombination of the electron–hole pairs is found using the infrared spectroscopy investigations.
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2.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Aplesnin S. S., Sitnikov M. N.
Заглавие
:
Magnetocapacitance
effect in GdxMn1–xS
Место публикации
: Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2016. - Vol. 58, Is. 6. - P.1148-1153. - ISSN 10637834 (ISSN),
DOI
10.1134/S1063783416060032
Примечания
: Cited References: 15. - This study was supported by the Russian Foundation for Basic Research (project no. 15-42-04099 r_si-bir_a) and the Ministry of Education and Science of the Russian Federation (state contract no. 114090470016).
Предметные рубрики:
Ferroelectricity
Аннотация:
The capacitance and dielectric loss tangent of GdxMn1–xS (x ≤ 0.2) solid solutions have been measured at a frequency of 10 kHz without magnetic field and in a magnetic field of 8 kOe in the temperature range of 90–450 K. An increase in the permittivity and a dielectric loss maximum have been detected in the low-temperature region. It has been found that the temperature of the maximum of the imaginary part of the permittivity shifts to higher temperatures with increasing concentration. The
magnetocapacitance
effect has been revealed for two compositions. The dielectric loss has been described in the Debye model with “freezing” dipole moments and in the orbital-charge ordering model.
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3.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Aplesnin S. S., Sitnikov M. N., Kharkov A. M., Abdelbaki H.
Заглавие
: Effect of the electrical inhomogeneity on the
magnetocapacitance
sign change in the HoxMn1−xS semiconductors upon temperature and frequency variation
Место публикации
: J. Mater. Sci.: Mater. Electron. - 2023. - Vol. 34, Is. 4. - Ст.284. - ISSN 1573-482X,
DOI
10.1007/s10854-022-09731-3
Примечания
: Cited References: 32. - Council on grants of the President of the Russian Federation, MK-620.2021.1.2, Maksim Sitnikov
Аннотация:
The dielectric properties of the HoxMn1−xS (x ≤ 0.1) semiconductors in the frequency range of 100 ˂ ω ˂ 106 Hz at temperatures of 80−550 K have been studied. The temperature crossover from the Debye behavior of the permittivity to the resonance behavior has been found at low holmium concentrations in the compounds. The frequency of the crossover from the migration to dipole orientation polarization with the minimum dielectric loss has been determined. The positive and negative magnetocapacitances for two concentrations of holmium ions have been found. The temperature and frequency ranges of the
magnetocapacitance
sign change have been established and this phenomenon has been explained using the model of the transition from electrically inhomogeneous to homogeneous states.
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4.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Aplesnin S. S., Kretinin V. V., Panasevich A. M., Yanushkevich K. I.
Заглавие
: Enhancement of the
magnetocapacitance
effect in an external electric field in LaxBi1-xFeO3 films
Место публикации
: J. Exp. Theor. Phys.: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 121, Is. 3. - P.422-428. - ISSN 1063-7761,
DOI
10.1134/S1063776115090022
Примечания
: Cited References: 28. - This work was supported by the Russian Foundation for Basic Research (project no. 12-02-00125-a) and by the State Task no. 114090470016.
Предметные рубрики:
MAGNETIC DOMAIN-WALLS
BIFEO3 FILMS
MULTIFERROICS
Аннотация:
The goal of the study is to determine the value of
magnetocapacitance
under the substitution of lanthanum for bismuth in thin LaxBi1-xFeO3 films and to find out the effect of an external bias electric field on the
magnetocapacitance
effect. To solve this task, the dielectric permittivity, the magnetic permeability, and the loss tangent are measured in LaxBi1-xFeO3 films in magnetic fields of up to 8 kOe in the range of temperatures 100 K < T < 1000 K. Maxima of the permittivity and permeability at low temperatures and the dependence of the permeability on the prehistory of a sample are found. An increase in the
magnetocapacitance
due to the substitution of lanthanum for bismuth is observed. A giant enhancement of
magnetocapacitance
in an external electric bias field is revealed. These phenomena are attributed to the rearrangement of the domain structure. © 2015, Pleiades Publishing, Inc.
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5.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
:
Автор(ы)
: Aplesnin S. S., Panasevich A. M., Sitnikov M. N., Khar'kov A. M.
Заглавие
:
Magnetocapacitance
and hysteresis of electricalpolarization in GDxMn1-xSe
Коллективы
: Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации
: Moscow International Symposium on Magnetism (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.4OR-F-11. - P.666 (Шифр 29916280)
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6.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Kolodyazhnaya L. S., Zvyagina G. A., Bilych I. V., Zhekov K. P., Burma N. G., Fil' V. D., Gudim I. A.
Заглавие
:
Magnetocapacitance
, magnetoelasticity, and magnetopiezoelectric effect in HoFe3(BO3)4
Место публикации
: Low Temp. Phys. - 2018. - Vol. 44, Is. 12. - P.1341-1347. - ISSN 1063-777X,
DOI
10.1063/1.5078631. - ISSN 1090-6517(eISSN)
Примечания
: Cited References: 18
Аннотация:
The main components of the tensor of the moduli of elasticity and the piezomodulus have been measured in monocrystals of the ferroborate HoFe3(BO3)4. The spin-dependent contributions to sound velocity, dielectric permeability, and piezoelectric response in the antiferromagnetic state were studied. The parameters of magnetoelectric and magnetoelastic interactions in an easy-plane magnetic-ordering phase have been defined. A phenomenological interpretation of observed effects is given.
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7.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Aplesnin S. S., Romanova O. B., Korolev V. V., Sitnikov M. N., Yanushkevich K. I.
Заглавие
: Magnetoimpedance and
magnetocapacitance
of anion-substituted manganese chalcogenides
Место публикации
: J. Appl. Phys.: American Institute of Physics, 2017. - Vol. 121, Is. 7. - Ст.075701. - ISSN 00218979 (ISSN),
DOI
10.1063/1.4976097
Примечания
: Cited References: 26. - The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 17-42-240079 r_sibir_a. This study was supported by the Russian Foundation for Basic Research project No. 16-52-00045 Bel_a and government work No. 114090470016.
Ключевые слова
(''Своб.индексиров.''): activation energy--chalcogenides--inorganic compounds--manganese--neel temperature--carrier relaxation time--impedance spectroscopy--low and high frequencies--magnetically ordered state--magneto-resistive effect--
magnetocapacitance
--pyroelectric current--temperature dependence--temperature distribution
Аннотация:
The magnetoresistive effect in MnSe1−XTeX manganese chalcogenides with a substitute concentration of X = 0.1 is studied by impedance spectroscopy. The magnetoimpedance above the Neel temperature is found. The obtained experimental data are explained in the framework of the model of existence of magnetic nanoareas of two types. Two activation energies in the low- and high-frequency regions are determined from the frequency and temperature dependences of the permittivity described in the Debye model. The extrema found in the temperature dependence of the pyroelectric current are consistent with the maxima in the temperature dependence of magnetization. Temperature dependence of the carrier relaxation time is established. The
magnetocapacitance
of the MnSe1−XTeX solid solutions is found. The change in the carrier type above the Neel temperature and the temperature of the transition to the magnetically ordered state in the MnTe nanoarea is established.
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8.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Gaydamak T. N., Gudim, I. A., Zvyagina G. A., Bilych I. V., Burma N. G., Zhekov K. R., Fil V. D.
Заглавие
: Magnetopiezoelectric effect and
magnetocapacitance
in SmFe3(BO3)4
Коллективы
: Russian Foundation for Basic Research [14-02-00307, 13-02-12442]; Leading Scientific Schools [924.2014.2]
Место публикации
: Phys. Rev. B: American Physical Society, 2015. - Vol. 92, Is. 21. - Ст.214428. - ISSN 1098-0121,
DOI
10.1103/PhysRevB.92.214428. - ISSN 1550-235X(eISSN)
Примечания
: Cited References:19. - This study was supported in part by the grants of the Russian Foundation for Basic Research 14-02-00307 and 13-02-12442 and Grant for Support of Leading Scientific Schools 924.2014.2. The authors are grateful to N.F. Kharchenko and I.E. Chupis for numerous useful discussions.
Аннотация:
A giant magnetopiezoelectric effect has been revealed in samarium ferroborate. The effective piezomodulus is increased more than twice in the antiferromagnetic phase and it is reduced by a high magnetic field. The nature of the effect is in the joint contribution of both magnetoelectric and magnetoelastic interactions. The evolution of this contribution in the magnetic field is caused by the growth of the magnetic energy including the spin reorientation. Additional data concerning the behavior of the high-frequency
magnetocapacitance
have been obtained. The parameters of magnetoelectric and magnetoelastic couplings and the magnetic anisotropy constant in the basal plane have been determined.
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