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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bezmaternykh L. N., Sofronova S. N., Volkov N. V., Eremin E. V., Bayukov O. A., Nazarenko I. I., Velikanov D. A.
Заглавие : Magnetic properties of Ni3B2O6 and Co3B2O6 single crystals
Место публикации : Phys. Status Solidi B. - 2012. - Vol. 249, Is. 8. - P.1628-1633. - ISSN 0370-1972, DOI 10.1002/pssb.201147518
Примечания : Cited References: 12. - This study was supported by the Siberian Branch of the Russian Academy of Sciences, Integration project no. 101.
Предметные рубрики: DIELECTRICS
Ключевые слова (''Своб.индексиров.''): antiferromagnets--crystal growth--magnetics structure--ni3b2o6 and co3b2o6 single crystals
Аннотация: Orthorhombic Me3B2O6 (Me = Co, Ni) single crystals of the kotoite family are grown from the fluxes based on a mixture of bismuth trimolybdate and sodium oxide upon spontaneous nucleation. The field and temperature dependences of magnetization of the single crystals with the magnetic field oriented along the principal crystallographic directions are obtained. Unlike Ni3B2O6, Co3B2O6 exhibits strong anisotropy of the magnetic properties. At the temperature T = 10 K, the magnetization curves of Co3B2O6 reveal an anomaly attributed to the spin-reorientation transition. Strong anisotropy of the magnetic properties of Co3B2O6 is also confirmed by the calculation of the exchange interactions within a simple indirect coupling model.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vasilovskiy S. G., Beskrovnyi A. I., Aleksandrov K. S., Flerov I. N., Simkin V. G.
Заглавие : Features of structural transformations in dielectrics Rb2KM3+F6, M3+ = Al, Cr, Ga, Fe, Lu, Er
Коллективы : International Seminar on Ferroelactic Physics
Место публикации : Abstract book of The Fifth International Seminar on Ferroelactic Physics. - 2006. - P.30
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sofronova S. N., Bezmaternykh L. N., Eremin E. V., Nazarenko I. I., Volkov N. V., Kartashev A. V., Moshkina E. M.
Заглавие : The superexchange interactions and magnetic ordering in low-dimentional ludwigite Ni5GeB2O10
Место публикации : J. Magn. Magn. Mater.: Elsevier, 2016. - Vol. 401. - P.217-222. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2015.10.024
Примечания : Cited References: 23. - This study was supported by Russian Foundation for Basic Research (RFFI Siberia No. 15-42-04186). We thank S. Popkov, G. Yurkin for help on the magnetic measurements and M.S. Molokeev for help on the x-ray diffraction
Предметные рубрики: DIELECTRICS
EXCHANGE
CATION
Ключевые слова (''Своб.индексиров.''): ludwigites--magnetic order--heat capacity--exchange interactions--ferrimagnetic
Аннотация: The ludwigite Ni5Ge(BO5)2 belongs to a family of oxyborates which have low-dimensional subunits in the form of three-leg ladders unit structure. This material was studied by magnetic and thermodynamic measurements. Ni5Ge(BO5)2 does not show full long-range magnetic order, but one goes into a partial ordering or spin-glass state at 87 K. The superexchange interactions were calculated in the framework of a simple indirect coupling model. Different models of magnetic structure of Ni5Ge(BO5)2 and its unique magnetic behaviour was discussed. © 2015 Elsevier B.V.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moshkina E. M., Sofronova S. N., Veligzhanin A., Molokeev M. S., Nazarenko I. I., Eremin E. V., Bezmaternykh L. N.
Заглавие : Magnetism and structure of Ni2MnBO5 ludwigite
Место публикации : J. Magn. Magn. Mater.: Elsevier, 2016. - Vol. 402. - P.69-75. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2015.11.033
Примечания : Cited References: 23. - The authors are grateful to Professor N.V. Volkov and Professor A.N. Vasiliev for valuable discussions. This work was supported by Russian Foundation for Basic Research (grants No. 16-02-00055, 16-32-00318)
Предметные рубрики: CRYSTAL-STRUCTURE
DIELECTRICS
IFEFFIT
Mn
Ключевые слова (''Своб.индексиров.''): ludwigites--crystal structure--antiferromagnetic--indirect coupling model
Аннотация: Single crystals of ludwigite Ni2MnBO5 were synthesized by flux growth technique. The detailed structural and magnetic characterizations of the synthesized samples have been carried out. The cations composition of the studied crystal was determined using X-ray diffraction and EXAFS technique, the resulting composition is differ from the content of the initial Mn2O3–NiO components of flux. Magnetic susceptibility measurements and the calculations of the exchange integrals in frameworks of indirect coupling model revealed strong antiferromagnetic interactions and appearance of magnetic ordering phase at the temperature T=85 K. The hypothesis of the existence of several magnetic subsystems was supposed.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Deich L. I.
Заглавие : Local piezoelectric effect in disordered dielectrics
Разночтения заглавия :авие SCOPUS: Local piezoelectric effect in disordered dielectrics
Место публикации : J. Phys.: Condens. Matter: IOP PUBLISHING LTD, 1990. - Vol. 2, Is. 8. - P.2045-2052. - ISSN 0953-8984, DOI 10.1088/0953-8984/2/8/011
Примечания : Cited References: 13
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bayukov O. A., Savitskii A. F.
Заглавие : The prognostication possibility of some magnetic-properties for dielectrics on the basis of covalency parameters of ligand cation bonds
Место публикации : Phys. Status Solidi B. - 1989. - Vol. 155, Is. 1. - P.249-255. - ISSN 0370-1972, DOI 10.1002/pssb.2221550125
Примечания : Cited References: 27
WOS
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : BAYUKOV O. A., SAVITSKII A. F.
Заглавие : PREDICTION OF MAGNETIC-PROPERTIES OF DIELECTRICS IS POSSIBLE
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1994. - Vol. 36, Is. 7. - P1923-1938. - ISSN 0367-3294
Примечания : Cited References: 54
Предметные рубрики: EXCHANGE INTERACTIONS
METAL-IONS
WOS
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sofronova S. N., Moshkina E. M., Nazarenko I. I., Seryotkin Yu. V., Nepijko S. A., Ksenofontov V., Medjanik K., Veligzhanin A. A., Bezmaternykh L. N.
Заглавие : Crystal growth, structure, magnetic properties and theoretical exchange interaction calculations of Cu2MnBO5
Место публикации : J. Magn. Magn. Mater.: Elsevier, 2016. - Vol. 420. - P.309-316. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2016.07.019
Примечания : Cited References: 35. - X-ray diffraction experiment was carried out at the Centre on Molecular Design and Ecologically Safe Technologies at the Novosibirsk State University. The reported study was funded by Russian Foundation for Basic Research (RFBR) and Government of Krasnoyarsk Territory according to the research project No. 16-42-243028.
Предметные рубрики: SPIN-GLASS BEHAVIOR
SINGLE-CRYSTALS
SUPEREXCHANGE INTERACTIONS
LUDWIGITE
DIELECTRICS
CO3B2O6NI3B2O6
WARWICKITES
FE3O2BO3
IFEFFIT
NI3B2O6
Ключевые слова (''Своб.индексиров.''): oxyborates--ludwigites--xmcd--exafs--magnetism
Аннотация: Single crystals of ludwigite Cu2MnBO5 were synthesized by flux growth technique. The detailed structural and magnetic characterizations of the synthesized samples have been carried out. The cations composition of the studied crystal was determined using X-ray diffraction and EXAFS technique, the resulting composition differ from the content of the initial Mn2O3–CuO components of the flux. Magnetic susceptibility measurements and the calculations of the exchange integrals in frameworks of indirect coupling model revealed that monoclinic distortions strongly affect exchange interactions and appearance of magnetic ordering phase at the temperature T=93 K. The hypothesis of the existence of several magnetic subsystems was supposed. © 2016 Elsevier B.V.
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9.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Mironov V. L., Karavaysky A. Yu., Molostov I. P., Lukin Y. I., Kosolapova L. G.
Заглавие : Temperature and texture dependent spectroscopic dielectric model for frozen mineral soils at 0.1-15GHz
Коллективы : Progress in Electromagnetics Research Symposium , Russian Science Foundation [14-17-00656]
Место публикации : Progr. Electromag. Res. Symp. (PIERS): Proceedings: IEEE, 2016. - P.4754-4754. - , DOI 10.1109/PIERS.2016.7735742
Примечания : Cited References:2. - The work was supported by the Russian Science Foundation (grant No. 14-17-00656).
Ключевые слова (''Своб.индексиров.''): soil--dielectrics--temperature measurement--minerals--temperature dependence--dielectric measurement--frequency measurement
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondarev V. S., Flerov I. N., Gorev M. V., Pogoreltsev E. I., Molokeev M. S., Mikhaleva E. A., Shabanov A. V., Es'kov A. V.
Заглавие : Influence of thermal conditions on the electrocaloric effect in a multilayer capacitor based on doped BaTiO3
Место публикации : J. Adv. Dielectr. - 2017. - Vol. 7, Is. 6. - Ст.1750041. - ISSN 2010-135X, DOI 10.1142/S2010135X17500412. - ISSN 2010-1368
Примечания : Cited References: 32. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research, project no. 16-42-240428 r_a, and partially financially supported by Government of Russian Federation, Grant 074-U01.
Ключевые слова (''Своб.индексиров.''): electrocaloric effect--ferroelectrics--layered structures--nonequilibrium conditions--phase transitions
Аннотация: We present the results of studies of thermal expansion, heat capacity, permittivity, polarization and the influence of different thermal conditions on the intensive electrocaloric effect (ECE), ΔTAD, in a commercial multilayer capacitor based on doped BaTiO3. Investigations in a wide temperature range revealed one anomaly in the behavior of the physical properties at about 290K characteristic for the relaxors. Direct measurements showed a high reversibility of ECE under equilibrium thermal conditions. Good agreement was found between the values of ΔTAD determined by direct and indirect measurements at the electric field up to 15.4 kV/cm. Quasi-isothermal conditions lead, firstly, to decrease of large ΔTAD ≈0.94K obtained in adiabatic conditions under E = 308 kV/cm to 0.87 K, and, secondly, the appearance of a difference between the values of ΔTON and ΔTOFF determined when the electric field is applied and removed. Using this phenomenon and changing the frequency of the periodic electric field, E = 15.4 kV/cm, the effect of cooling was obtained equal to [(ΔTON + ΔT OFF)/2]max = -0,032 K. The results obtained are useful for further development of the electrocaloric refrigeration technique without thermal switches.
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