Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Найдено в других БД:

Каталог книг и брошюр библиотеки ИФ СО РАН (8)

Каталог журналов библиотеки ИФ СО РАН (2)

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=glass<.>)

Общее количество найденных документов : 111
Показаны документы с 1 по 10

1-10 11-20 21-30 31-40 41-50 51-60

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Semenov S. V., Balaev A. D., Balaev D. A.
Заглавие : Dissipation in granular high-temperature superconductors: New approach to describing the magnetoresistance hysteresis and the resistive transition in external magnetic fields
Коллективы : Russian Science Foundation [17-72-10050]
Место публикации : J. Appl. Phys. - 2019. - Vol. 125, Is. 3. - Ст.033903. - ISSN 0021-8979, DOI 10.1063/1.5066602. - ISSN 1089-7550(eISSN)
Примечания : Cited References: 79. - The work was supported by the Russian Science Foundation (Grant No. 17-72-10050). We are grateful to K. Terent'ev for the preparation of the sample and D. Gokhfeld for useful discussions.
Предметные рубрики: CRITICAL-CURRENT-DENSITY
VORTEX-GLASS SUPERCONDUCTIVITY
ANISOTROPIC ENERGY-DISSIPATION
Аннотация: An approach to describing the R(H) magnetoresistance hysteresis in granular high-temperature superconductors and behavior of the R(T) resistive transition in these objects in an external magnetic field is proposed. The dissipation is attributed to the subsystem of intergrain boundaries, which form a Josephson junction network. The approach is based on accounting for the effect of magnetic moments of superconducting grains on the resulting (effective) field in the intergrain medium. The described procedure includes (i) establishing of the degree of magnetic flux crowding in the intergrain medium by comparing the experimental data on the R(H) magnetoresistance hysteresis and magnetization M(H), (ii) determining the effective field Beff in the intergrain medium as a function of external field H and temperature T with regard to the thermomagnetic prehistory, and (iii) fitting the experimental R(H) and R(T) dependences using the Arrhenius expression R ∼ exp(–EJ/ kB T), where EJ is the parameter corresponding to the Josephson coupling energy. The fundamental novelty of the proposed approach is the extraction of the functional dependences of EJ on the effective field Beff in the intergrain medium rather than on the external field H, as was made in many previous works. It is shown that the proposed approach makes it possible to adequately describe both the R(H) hysteretic dependences and R(T) dependences of the Y-Ba-Cu-O high-temperature superconductor samples with different morphologies and critical current densities.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kazak N. V., Platunov M. S., Knyazev Yu. V., Moshkina E. M., Solovyov L. A., Vereshchagin S. N., Mikhlin, Yu. L., Veligzhanin A. A., Trigub A. L., Ovchinnikov S. G.
Заглавие : Study of mixed-valence Mn2BO4 using XRD, XPS and XAFS spectroscopies
Коллективы : Russian Foundation for Basic Research [17-02-00826, 16-32-60049]
Место публикации : Physica B. - 2019. - Vol. 560. - P.228-235. - ISSN 0921-4526, DOI 10.1016/j.physb.2019.02.019. - ISSN 1873-2135(eISSN)
Примечания : Cited References: 39. - This work has been financed by Russian Foundation for Basic Research (17-02-00826 and 16-32-60049 grant numbers).
Предметные рубрики: SPIN-GLASS BEHAVIOR
MAGNETIC-PROPERTIES
PROFILE REFINEMENT
Аннотация: The valence states and local structure around Mn atoms in mixed-valence Mn2BO4 have been studied by temperature dependent X-ray powder diffraction (XRPD), X-ray photoelectron (XPS) and Mn K-edge X-ray absorption (XAFS) spectroscopies measurements. X-ray absorption near-edge structure (XANES) and XPS have been used to measure the average oxidation state of Mn in bulk and near-surface of the material. The edge position, peak shapes and pre-edge features of Mn K-edge XANES spectra have been discussed. The pronounced temperature dependence of the Debye-Waller (DW) factor corresponding to the MnO coordination shell has been found from the extended x-ray absorption fine structure (EXAFS) analysis and has been associated with variations in the local distortions in MnO6 octahedra and emergence of short-range magnetic correlations at low temperatures. The XRPD measurements have been carried out at 298, 523 and 773 K. The monoclinic symmetry (P21/n) was found to persist up to highest temperature measured. The BVS calculations have revealed large valence difference between two manganese sites that strongly supports the presence of charge ordering up to high temperatures.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Korotkov L. N., Stekleneva L. S., Flerov I. N., Mikhaleva E. A., Rysiakiewicz-Pasek E., Molokeev M. S., Bondarev I. A., Gorev M. V., Sysoev O. I.
Заглавие : X-Ray, Dielectric, and Thermophysical Studies of Rubidium Tetrachlorozincate inside Porous Glasses
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 9. - P.1072-1076. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873819090132
Примечания : Cited References: 17
Аннотация: Results are presented from studying the X-ray diffraction, heat capacities, dielectric permittivities, and coefficients of the volumetric thermal expansion of composite materials obtained by embedding of Rb2ZnCl4 salt into the porous matrices of borosilicate glass with average pore diameters of 46 and 320 nm in the temperature range of 120–350 K. The temperatures of transitions to the incommensurate and ferroelectric phases are determined, along with the freezing temperature of the mobility of domain boundaries in Rb2ZnCl4 particles. A substantial increase in their Curie temperature is observed.
Смотреть статью,
Scopus,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mikhaleva E. A., Flerov I. N., Kartashev A. V., Gorev M. V., Molokeev M. S., Korotkov L. N., Rysiakiewicz-Pasek E.
Заглавие : Specific heat and thermal expansion of triglycine sulfate-porous glass nanocomposites
Коллективы : Russian Foundation for Basic Research [16-32-00092 mol-a]
Место публикации : Phys. Solid State. - 2018. - Vol. 60, Is. 7. - P.1338-1343. - ISSN 1063-7834, DOI 10.1134/S1063783418070181. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 27. - This study was supported by the Russian Foundation for Basic Research, project no. 16-32-00092 mol-a.
Предметные рубрики: PHASE-TRANSITIONS
DIELECTRIC-PROPERTIES
FERROELECTRIC COMPOSITES
Аннотация: The effect of restricted geometry on specific heat capacity and thermal expansion of the triglycine sulfate (TGS)–borosilicate glass composites have been studied first. A decrease in the entropy and temperature of the P21 ↔ P21/m phase transition in the TGS component with decreasing the glass matrix pore diameter at the invariable specific heat and thermal expansion coefficient has been observed. The estimates are indicative of the minor effect of internal pressure on the TGS pressure coefficient dTC/dp in the composites.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Udod L. V., Sitnikov M. N., Kretinin V. V., Molokeev M. S., Mironova-Ulmane N.
Заглавие : Dipole glass in chromium-substituted bismuth pyrostannate
Коллективы : Russian Foundation for Basic Research [N 18-52-00009 Bel_a, 18-32-00079 mol_a, 3.5743.2017/6.7]
Место публикации : Mater. Res. Express. - 2018. - Vol. 5, Is. 11. - Ст.115202. - ISSN 2053-1591, DOI 10.1088/2053-1591/aaddd9
Примечания : Cited References: 33. - This study was supported by the Russian Foundation for Basic Research project N 18-52-00009 Bel_a, No 18-32-00079 mol_a, the state order No 3.5743.2017/6.7.
Предметные рубрики: BI4TI3O12 THIN-FILMS
NEUTRON-DIFFRACTION
RAMAN-SPECTROSCOPY
BI2SN2O7
Ключевые слова (''Своб.индексиров.''): dipole glass--permittivity--polarization--raman scattering spectra--structural transition
Аннотация: To establish the existence of dipole glass in the chromium-substituted bismuth pyrostannate solid solutions, the frequency and temperature dependences of the permittivity have been measured in the temperature range of 300–750 K. The field and dynamic dependences of polarization in the temperature range of 80–550 K have been determined. Using the Raman scattering spectra, the absence of inversion center has been established. The maximum of electrical resistance has been found in the vicinity of the dipole moment freezing point. The carrier type has been determined from the thermopower data. The polarization relaxation is shown to be nonexponential. The experimental data are explained within the model of dipole glass in the α- phase and the model of charged crystalline domain walls with the electron-polarization relaxation mechanism above the α–β structural transition.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Иванова, Оксана Станиславовна, Эдельман, Ирина Самсоновна
Заглавие : Прозрачные магнитные стеклокерамики на основе боратных и германатных стекол с наночастицами ферритов
Коллективы : "Новые материалы и перспективные технологии", междисциплинарный научный форум с международным участием, Российская академия наук, Совет молодых ученых Российской академии наук, Российское химическое общество им. Д.И. Менделеева, Институт металлургии и материаловедения им. А. А. Байкова РАН
Место публикации : Четвертый междисциплинарный научный форум с международным участием “Новые материалы и перспективные технологии”: сборник материалов. - 2018. - Т. 1. - С. 215-220
Примечания : Библиогр.: 5
Материалы конференции
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yang, Xiang, Zhang, Y.u., Zhang, Xuejie, Chen, Jian, Huang, Haisen, Wang, Dongsheng, Chai, Xirong, Xie, Gening, Molokeev M. S., Zhang, Haoran, Liu, Yingliang, Lei, Bingfu
Заглавие : Facile synthesis of the desired red phosphor Li2Ca2Mg2Si2N6:Eu2+ for high CRI white LEDs and plant growth LED device
Место публикации : J. Am. Ceram. Soc. - 2020. - Vol. 103, Is. 3. - P.1773-1781. - ISSN 0002-7820, DOI 10.1111/jace.16858. - ISSN 1551-2916(eISSN)
Примечания : Cited References: 34. - National Natural Science Foundations of China, Grant/Award Number: 21671070 and 51802101; Project GDUPS; Natural Science Foundation of Guangdong Province, Grant/Award Number: 2018A030310217; Guangzhou Science & Technology Project, Grant/Award Number: 201704030086; Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams; National Undergraduate Innovation and Entrepreneurship Training Program granted for Gening Xie, Grant/Award Number: 201910564035
Предметные рубрики: IN-GLASS
LUMINESCENCE
PERFORMANCE
EFFICIENT
EMISSION
ROUTE
Аннотация: The red emission with suitable peak wavelength and narrow band is acutely required for high color rendering index (CRI) white LEDs without at the cost of the luminous efficacy. Herein, the Li2Ca2Mg2Si2N6:Eu2+ red phosphor was prepared with facile solid‐state method using Ca3N2, Mg3N2, Si3N4, Li3N, and Eu2O3 as the safety raw materials under atmospheric pressure for the first time, which shows red emission peaking at 638 nm with full width at half maximum (FWHM) of 62 nm under blue light irradiation and becomes the desired red phosphor to realize the balance between luminous efficacy and high CRI in white LEDs. The morphology, structure, luminescence properties, thermal quenching behavior, and chromaticity stability of the Li2Ca2Mg2Si2N6:Eu2+ phosphor are investigated in detail. Concentration quenching occurs when the Eu2+ content exceeds 1.0 mol%, whereas high‐temperature photoluminescent measurements show a 32% drop from the room‐temperature efficiency at 423 K. In view of the excellent luminescence performances of Li2Ca2Mg2Si2N6:Eu2+ phosphor, a white LEDs with CRI of 91 as a proof‐of‐concept experiment was fabricated by coating the title phosphor with Y3Al5O12:Ce3+ on a blue LED chip. In addition, the potential application of the title phosphor in plant growth LED device was also demonstrated. All the results indicate that Li2Ca2Mg2Si2N6:Eu2+ is a promising red‐emitting phosphor for blue LED‐based high CRI white LEDs and plant growth lighting sources.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Molokeev M. S., Velikanov D. A., Petrakovskii G. A., Bayukov O. A.
Заглавие : HoFeTi2O7: synthesis, peculiarities of the crystal structure, and magnetic properties
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 3. - P.464-471. - ISSN 1063-7834, DOI 10.1134/S1063783420030075. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 23
Предметные рубрики: SPIN-GLASS
STATE
Аннотация: Polycrystalline samples of HoFeTi2O7 were obtained by solid-phase synthesis and investigated using X-ray diffraction, gamma resonance, and SQUID measurements. Characteristics of the structural properties are presented, which give an evidence of the distribution of iron atoms among nonequivalent crystallographic positions and of the nonuniform populating of positions mixed with titanium by the iron atoms. Spin disorder caused by mixing of magnetic and nonmagnetic ions, spatial nonuniformity of the interactions defining the magnetic structure in the crystal lead to formation of concurrent magnetic exchange interactions between the nearest neighbors, frustration of magnetic couplings, and loss of the long-range magnetic ordering. The temperature dependence of the magnetic susceptibility at low temperatures was shown to have some peculiarities typical of the magnetic state of spin glass.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kazak N. V., Belskaya N. A., Moshkina E. M., Bezmaternykh L. N., Vasiliev A. D., Sofronova S. N., Eremina R. M., Eremin E. V., Muftakhutdinov A. R., Cherosov M. A., Ovchinnikov S. G.
Заглавие : Antiferromagnetism of the cation-ordered warwickite system Mn2-xMgxBO4 (x=0.5, 0.6 and 0.7)
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-02-00559]; Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science to the research project [18-42243007]
Место публикации : J. Magn. Magn. Mater. - 2020. - Vol. 507. - Ст.166820. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2020.166820. - ISSN 1873-4766(eISSN)
Примечания : Cited References: 39. - The reported study was funded by the Russian Foundation for Basic Research (no. 20-02-00559), Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project. 18-42243007.
Предметные рубрики: SPIN-GLASS BEHAVIOR
CRYSTAL-STRUCTURES
SINGLE-CRYSTALS
INSIGHTS
MGFEBO4
Аннотация: X-ray diffraction, heat capacity and magnetic measurements are performed on single crystals of Mn2-xMgxBO4 (x = 0.5, 0.6 and 0.7) with the warwickite structure. The monoclinic symmetry is found for all samples with the space group P21/n. The M1 site is occupied by trivalent Mn ions while the M2 site is occupied by a mixture of divalent Mg and Mn ions. Regular cation and charge distributions are observed, which is unusual for heterometallic warwickites. The local octahedral distortions of M1O6 show the monotonic dependence on the Mg content and are in accordance with the Jahn-Teller distortion. All samples are found to undergo long-range antiferromagnetic ordering with rather low transition temperatures of TN = 16, 14 and 13 K for x = 0.5, 0.6, and 0.7, respectively. The ordering of local octahedral distortions, caused by the strong electron-phonon interaction of the trivalent Mn ions, is proposed to stabilise the cationic ordering and, as a result, the long-range magnetic ordering in the material.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Sitnikov M. N., Kharkov A. M., Konovalov S. O., Vorotinov A. M.
Заглавие : Magnetoimpedance, Jahn-Teller transitions upon electron doping of manganese sulfide
Место публикации : J. Magn. Magn. Mater. - 2020. - Vol. 513. - Ст.167104. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2020.167104
Примечания : Cited References: 42. - This study was supported by youth project_Reshetnev Siberian State University of Science and Technology
Аннотация: The effect of a magnetic field on the electrical and magnetic properties of manganese sulfide upon electron doping in the YbxMn1−xS (0.05 ˂ x ˂ 0.2) compound has been investigated. The change in the conductivity type from the Poole–Frenkel to Mott law have been established using the I–V characteristics and the change in the carrier type upon temperature and concentration variations has been observed. The effect of the sample prehistory on the conductivity, impedance, and magnetic susceptibility under the action of a magnetic field in a wide temperature range has been found. The trivalent state of ytterbium ions has been determined using the electron paramagnetic resonance study. The dynamic JT transitions temperature are found by IR method and by the electron paramagnetic resonance. Anomalies of carrier mobility and magneto-impedance were found in the vicinity of the Jahn-Teller transitions. The experimental data are explained by the localization of electrons with the formation of the interstitial orbital momenta and an orbital momentum into the site. The sample prehistory is related to the lifting of the orbital angular moments degeneracy and the direction of the axis of distortion of the octahedrons in a magnetic field.
Смотреть статью,
Читать в сети ИФ,
Scopus,
WOS
Найти похожие