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Общее количество найденных документов : 65
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Velikanov D. A., Patrin G. S., Petrakovskii G. A., Volkov V. Y.
Заглавие : Quantum interference in HTSC-ceramics of system Tl-Ca-Ba-Cu-O
Место публикации : Izvestiya vysshikh uchebnykh zavedenii Fizika. - 1990. - Vol. 33, Is. 9. - P.26-29. - ISSN 0021-3411; \b Russian Physics Journal; \b Известия высших учебных заведений. Физика
Примечания : Cited References: 13
Предметные рубрики: RF SQUID
DC-SQUID
TEMPERATURE
SUPERCONDUCTOR
OPERATION
WOS
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrov K. S.
Заглавие : Phase-transitions and distortions of the structure in the family of crystals related to alpha-k2so
Место публикации : Kristallografiya. - 1993. - Vol. 38, Is. 1. - P.128-139. - ISSN 0023-4761; Crystallogr. Rep.
Примечания : Cited References: 38
Предметные рубрики: X-RAY
EXPECTED STRUCTURES
A2BX4 COMPOUNDS
TEMPERATURE
(NH4)2BEF4
CHEMISTRY
DISORDER
SYMMETRY
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Deich L. I.
Заглавие : Far-infrared attenuation in glasses
Разночтения заглавия :авие SCOPUS: Far-infrared attenuation in glasses
Место публикации : Phys. Rev. B. - 1994. - Vol. 49, Is. 1. - P.109-113. - ISSN 0163-1829, DOI 10.1103/PhysRevB.49.109
Примечания : Cited References: 29
Предметные рубрики: VITREOUS SILICA
TEMPERATURE
MODEL
LOCALIZATION
ABSORPTION
SOLIDS
STATES
Аннотация: The influence of quasilocal vibrations on the far-infrared spectra of glasses is investigated under the supposition that the quasilocal vibrations are directly inactive in the attenuation. It is shown that taking into account phonon-quasilocal-vibration coupling and both medium- and short-range structure of the inhomogeneities of a photon-phonon coupling parameter can give rise to an attenuation curve similar to one observed for a-SiO2 and related materials.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Deich L. I.
Заглавие : Low-frequency raman-scattering in glasses
Разночтения заглавия :авие SCOPUS: Low-frequency Raman scattering in glasses
Место публикации : Phys. Rev. B. - 1995. - Vol. 51, Is. 13. - P.8131-8139. - ISSN 0163-1829, DOI 10.1103/PhysRevB.51.8131
Примечания : Cited References: 32
Предметные рубрики: AMORPHOUS SOLIDS
VITREOUS SILICA
THERMAL-CONDUCTIVITY
LIGHT-SCATTERING
TEMPERATURE
STATES
MODES
HEAT
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khrustalev B. P., Balaev A. D., Sosnin V. M.
Заглавие : Superparamagnetism in Fe-SiO nanocluster films
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1995. - Vol. 37, Is. 6. - P.1676-1686. - ISSN 0367-3294
Примечания : Cited References: 30
Предметные рубрики: ELECTRICAL-PROPERTIES
TEMPERATURE
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kholzhigitov S. F., Podmarkov A. N., Frolov G. I.
Заглавие : Magnetic phase diagrams for 2-layer ferromagnetic films
Место публикации : Zhurnal Tek. Fiz.: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 66, Is. 1. - P71-78. - ISSN 0044-4642
Примечания : Cited References: 11
Предметные рубрики: TEMPERATURE
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S.
Заглавие : Dimerization of antiferromagnetic chain with 4-spin interaction
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 38, Is. 6. - P1868-1877. - ISSN 0367-3294
Примечания : Cited References: 30
Предметные рубрики: SPIN-1/2 HEISENBERG-ANTIFERROMAGNET
COMPETING INTERACTIONS
MONTE-CARLO
THERMODYNAMIC PROPERTIES
SYSTEMS
CUGEO3
TEMPERATURE
NEUTRON
STATE
MODEL
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gavrichkov V. A., Ovchinnikov S. G., Borisov A. A., Goryachev E. G.
Заглавие : Evolution of the band structure of quasiparticles with doping in copper oxides on the basis of a generalized tight-binding method
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2000. - Vol. 91, Is. 2. - P369-383. - ISSN 1063-7761, DOI 10.1134/1.1311997
Примечания : Cited References: 45
Предметные рубрики: T-J MODEL
CUPRATE SUPERCONDUCTORS
ELECTRONIC-STRUCTURE
EXCITATIONS
DEPENDENCE
TEMPERATURE
DERIVATION
SR2CUO2CL2
SPECTRUM
DENSITY
Аннотация: Two methods for stabilizing the two-hole B-3(1g) state as the ground state instead of the Zhang-Rice singlet are determined on the basis of an orthogonal cellular basis for a realistic multiband pd model of a CuO2 layer and the dispersion relations for the valence band top in undoped and doped cases are calculated. In the undoped case, aside from the valence band, qualitatively corresponding to the experimental ARPES data for Sr2CuO2Cl2 and the results obtained on the basis of the t-t'-J model, the calculations give a zero-dispersion virtual level at the valence band top itself. Because of the zero amplitude of transitions forming the virtual level the response corresponding to it is absent in the spectral density function. In consequence, the experimental ARPES data do not reproduce its presence in this antiferromagnetic undoped dielectric. A calculation of the doped case showed that the virtual level transforms into an impurity-type band and acquires dispersion on account of the nonzero occupation number of the two-hole states and therefore should be detected in ARPES experiments as a high-energy peak in the spectral density. The computed dispersion dependence for the valence band top is identical to the dispersion obtained by the Monte Carlo method, and the ARPES data for optimally doped Bi2Sr2CaCu2O8 + delta samples. The data obtained also make it possible to explain the presence of an energy pseudogap at the symmetric X point of the Brillouin band of HTSC compounds. (C) 2000 MAIK "Nauka/Interperiodica".
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mel'nikova S. V., Kartashev A. V., Grankina V. A., Flerov I. N.
Заглавие : Investigation of the reconstructive phase transition between metastable (alpha) and stable (beta) modifications of the NH4LiSO4 crystal
Разночтения заглавия :авие SCOPUS: Investigation of the Reconstructive Phase Transition between Metastable (α) and Stable (β) Modifications of the NH4LiSO 4 Crystal
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2003. - Vol. 45, Is. 8. - P1572-1578. - ISSN 1063-7834, DOI 10.1134/1.1602898
Примечания : Cited References: 13
Предметные рубрики: AMMONIUM LITHIUM-SULFATE
LINH4SO4
TEMPERATURE
Аннотация: Crystals of ammonium lithium sulfate NH4LiSO4 in alpha and beta modifications are studied, and conditions of their nucleation and growth are determined. The alpha modification of NH4LiSO4 and alpha--beta phase transitions are investigated using polarized light microscopy, x-ray diffraction, and differential scanning calorimetry in the temperature range 80-530 K. It is found that, depending on the conditions of growth and storage, there exist two temperature ranges (T(alpha--beta)approximate to340-350 and approximate to440-450 K) in which the crystals can undergo an alpha--beta reconstructive phase transition. The enthalpy of this transformation depends on the symmetry of the final phase. In the former case (340-350 K), the reconstructive phase transition leads to rapid destruction of the sample. In the latter case (440-450 K), the crystal structure undergoes a slow transformation (recrystallization) without noticeable distortions. The results obtained indicate that no structural phase transition occurs in the alpha modification of NH4LiSO4 at 250 K. (C) 2003 MAIK "Nauka/Interperiodica".
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Kveglis L. I.
Заглавие : Electron-beam-initiated crystallization of iron-carbon films
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2004. - Vol. 46, Is. 5. - P969-974. - ISSN 1063-7834, DOI 10.1134/1.1744977
Примечания : Cited References: 34
Предметные рубрики: AMORPHOUS-GERMANIUM FILMS
EXPLOSIVE CRYSTALLIZATION
PATTERN-FORMATION
TEMPERATURE
MICROSCOPY
MECHANISM
Аннотация: A structure formed in nanocrystalline iron-carbon films exposed to an electron beam was studied. Explosive crystallization (EC) with the formation of dendrite and cellular-dendritic instabilities at a rate of up to 1 cm/s was observed. It was shown that the dependence between the growth rate of dendrite branches (or cells) during EC and the rounding radius of dendrite branch tips can be approximately described by equations used to calculate the crystal growth in supercooled melts. To explain the EC mechanism, a model of a liquid zone formed at the crystallization front was used. It was shown that the liquid zone arises due to energy accumulated in the film in the nanocrystalline state. It was assumed that this energy was accumulated due to the energy of elastic stresses. (C) 2004 MAIK "Nauka / Interperiodica".
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