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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : SANDALOV I. S., YERUKHIMOV M. S.
Заглавие : EFFECT OF MIXING THE STATES OF CONDUCTIVITY ELECTRONS AND IMPURITY D(F) IONS ON ELECTRIC-CONDUCTIVITY
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1982. - Vol. 82, Is. 1. - P246-253. - ISSN 0044-4510
Примечания : Cited References: 17
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : SMOKOTIN E. M., GUSYATSKII G. F., VETROV A. A., VOLKOV S. A.
Заглавие : MAGNETOELASTIC PROPERTIES OF YIG ALLOYED WITH TB-3+ AND YB-3+ IONS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1982. - Vol. 24, Is. 9. - P2809-2813. - ISSN 0367-3294
Примечания : Cited References: 17
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrakovskii G. A., PATRIN G. S.
Заглавие : INFLUENCE OF PHOTO-EXCITED HO-3+ IONS ON FERROMAGNETIC-RESONANCE IN Y3FE5O12
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1983. - Vol. 48, Is. 1. - P25-28. - ISSN 0038-1098, DOI 10.1016/0038-1098(83)90175-8
Примечания : Cited References: 5
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : PETRAKOVSKY G. A., PANKRATS A. I., SOSNIN V. M., VASILIEV V. N.
Заглавие : EFFECT OF ALLOYING BY CO-2+ IONS ON THE RESONANCE AND STATIC MAGNETIC-PROPERTIES OF HEMATITE
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1983. - Vol. 85, Is. 2. - P691-699. - ISSN 0044-4510
Примечания : Cited References: 17
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : EMELYANOVA L. S., PETRAKOVSKAYA E. A., EFIMOV V. N., STEPANOV V. G.
Заглавие : MN-2+ ELECTRON-PARAMAGNETIC-RES OF ISOLATED IONS AND EXCHANGE-COUPLED PAIRS IN CS2CDCL4 AND RB2CDCL4
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1984. - Vol. 26, Is. 6. - P1844-1846. - ISSN 0367-3294
Примечания : Cited References: 4
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrakovsky G. A., Patrin G. S.
Заглавие : Effect of optical-excitation of impurity holmium ions on magnetic-resonance in yttrium-iron-garnet
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1986. - Vol. 90, Is. 5. - P1769-1780. - ISSN 0044-4510
Примечания : Cited References: 27
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Martynov S. N., PETROV S. B.
Заглавие : Single-ion-anisotropy of exchange-coupled Mn-2+ ions in (CH3)4NCDCl3 and CSCDCl3
Место публикации : Phys. Status Solidi B. - 1988. - Vol. 149, Is. 1. - P.K41-K44. - ISSN 0370-1972, DOI 10.1002/pssb.2221490151
Примечания : Cited References: 11
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sandalov I. S., Filatjev V. I.
Заглавие : Coulomb interaction and lattice theory of strongly correlated systems .1. mean field-equations for equilibrium positions of ions and band-structure
Место публикации : Physica B. - 1990. - Vol. 162, Is. 2. - P.139-160. - ISSN 0921-4526, DOI 10.1016/0921-4526(90)90046-W
Примечания : Cited References: 31
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : BAYUKOV O. A., RUDENKO V. V.
Заглавие : SINGLE-ION-ANISOTROPY INDUCED BY EXCHANGE-TYPE COVALENCE EFFECTS IN RHOMBOHEDRAL ANTIFERROMAGNETICS WITH S-IONS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1992. - Vol. 34, Is. 8. - P2665-2667. - ISSN 0367-3294
Примечания : Cited References: 15
Предметные рубрики: RESONANCE
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10.

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
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gavrilyuk A. P., Krasnov I. V., Shaparev N. Y.
Заглавие : Optical confinement of low-temperature plasma with resonant ions
Место публикации : JETP Letters. - 1996. - Vol. 63, Is. 5. - P.324-330. - ISSN 0021-3640, DOI 10.1134/1.567025
Примечания : Cited References: 10
Аннотация: Applications of the rectification of a gradient force in interfering bichromatic fields produced by intersecting laser beams for selective optical confinement of low-temperature electron-ion plasma with resonant ions are examined. (C) 1996 American Institute of Physics.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Volkov N. V., Vasiliev V. N.
Заглавие : The ''easy plane easy axis'' transition in alpha-Fe2O3:Ga crystals induced by doping with terbium ions
Место публикации : Phys. Lett. A. - 1997. - Vol. 230, Is. 1-2. - P.96-98. - ISSN 0375-9601, DOI 10.1016/S0375-9601(97)00219-3
Примечания : Cited References: 10
Аннотация: In easy plane weak ferromagnetic alpha-Fe2O3:Ga crystals it was found that doping with a hundredth part of To ions leads to the restoration of the transition into the ''easy axis'' magnetic state. It was established that in the alpha-Fe2O3:Ga, Tb crystal the angular magnetic phase is realized. (C) 1997 Published by Elsevier Science B.V.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zamkova N. G., Zinenko V. I.
Заглавие : Lattice dynamics of ionic crystals in a model of "breathing" and polarizable ions
Место публикации : Phys. Solid State: AMER INST PHYSICS, 1998. - Vol. 40, Is. 2. - P320-324. - ISSN 1063-7834, DOI 10.1134/1.1130302
Примечания : Cited References: 14
Предметные рубрики: OXIDE
Аннотация: An expression is written down for the dynamic matrix of ionic crystals in terms of a microscopic, parameterless model of "breathing" and polarizable ions. Results from a calculation of the complete spectrum of the lattice vibrations of ionic crystals having an NaCl structure are presented as an illustration. (C) 1998 American Institute of Physics.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avramov P. V., Varganov S. A., Ovchinnikov S. G.
Заглавие : Atomic-core dynamics and the electronic structure of some endo- and exohedral complexes of fullerenes with light elements
Разночтения заглавия :us: Atomic-core dynamics and the electronic structure of some endo-and exohedral complexes of fullerenes with light elements
Место публикации : Phys. Solid State. - 2000. - Vol. 42, Is. 11. - P.2168-2175. - ISSN 1063-7834, DOI 10.1134/1.1324059
Примечания : Cited References: 39
Предметные рубрики: M-AT-C-60 ENDOHEDRAL COMPLEXES
MOLECULAR-DYNAMICS
PHASE-TRANSITION
AB-INITIO
SOLID C60
C-60
IONS
Аннотация: The atomic and electronic structure of some endo-, exo-, and endo-exohedral complexes of the fullerene C-60 with various guest atoms and molecules (He-n, H-2, and Li-2) are investigated using semiempirical and nonempirical quantum-chemical methods. The atomic core dynamics is studied by the method of molecular dynamics. It is shown that guest atoms and molecules in fullerene polyhedra acquire an orbital angular momentum due to the correlated motion of nuclei above the low-energy barriers of the potential surface within the carbon polyhedron even at low temperatures (from 4 to 78 K). The emergence of orbital angular momenta of nuclei of guest atoms and molecules is attributed to a change in the contribution of the orbital angular momentum of electrons to the potential surface of the complexes. The motion of Li ions in a polyhedron leads to blurring of the top of the valence band and to the emergence of a charge polarization wave in the carbon polyhedron. (C) 2000 MAIK "Nauka/Interperiodica".
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zinenko V. I., Zamkova N. G., Sofronova S. N.
Заглавие : The structural properties of RbMnX3 (X=F, Cl, Br) halides
Разночтения заглавия :авие SCOPUS: The structural properties of RbMnX3 (X = F, Cl, Br) halides
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2003. - Vol. 96, Is. 4. - P747-756. - ISSN 1063-7761, DOI 10.1134/1.1574547
Примечания : Cited References: 15
Предметные рубрики: POLARIZATION
SYSTEMS
Ключевые слова (''Своб.индексиров.''): crystals--formability--hydrostatic pressure--ions--phase transitions--polarization--rubidium compounds--cubic structures--hexagonal structures--quadrupole polarizabilities--structural properties--halogen compounds
Аннотация: The results of nonempirical calculation of energies of three polytypes (cubic, two-layer hexagonal, and six-layer hexagonal) are given for RbMnX3 (X=F, Cl, Br) crystals. The calculation is performed using an ionic crystal model with regard for the deformability and the dipole and quadrupole polarizabilities of ions. The behavior of these crystals under the action of hydrostatic pressure is studied. It is demonstrated that, at normal pressure, the RbMnCl3 and RbMnBr3 crystals have a six-layer hexagonal structure. At pressures above 11 kbar, RbMnCl3 passes to a phase with a cubic structure; RbMnBr3 at pressures above 90 kbar passes to a phase with a two-layer hexagonal structure. The RbMnF3 crystal under normal conditions has a cubic structure and experiences no phase transformations under the effect of pressure. The obtained results are in satisfactory agreement with the known experimental data. (C) 2003 MAIK "Nauka/Interperiodica".
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popov E. A., Beznosikov B. V.
Заглавие : Absorption of light by exchange-coupled ions in a 2D antiferromagnet
Место публикации : Phys. Solid State. - 2003. - Vol. 45, Is. 8. - P.1475-1478. - ISSN 1063-7834, DOI 10.1134/1.1602882
Примечания : Cited References: 9
Предметные рубрики: OPTICAL-ABSORPTION
RB2MNCL4
Аннотация: The optical absorption spectra of Rb2MnxCd1-xCl4 crystals are experimentally studied in the vicinity of a magnon sideband of the exciton band at a manganese content x ranging from 1.0 to 0.4. Additional absorption bands are observed with an increase in the magnetic structural disorder upon replacement of manganese ions by cadmium ions. An analysis of the evolution of the additional absorption bands in a magnetic field during the spin-flop phase transition and the change in the intensity with variations in the manganese content x demonstrates that these bands are associated with the excitation of the exchange-coupled pairs of manganese ions located in different environments in a plane square lattice. The phase boundary between the antiferromagnetic and spin-flop phases is constructed using the results of optical measurements. The manganese content corresponding to the magnetic percolation point is evaluated. (C) 2003 MAIK "Nauka/Interperiodica".
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kliava J., Edelman I. S., Potseluyko A. M., Petrakovskaja E. A., Berger R., Bruckental I., Yeshurun Y., Malakhovskii A. V., Zarubina Y. V.
Заглавие : Magnetic and optical properties and electron paramagnetic resonance of gadolinium-containing oxide glasses
Место публикации : J. Phys.: Condens. Matter: IOP PUBLISHING LTD, 2003. - Vol. 15, Is. 40. - P6671-6681. - ISSN 0953-8984, DOI 10.1088/0953-8984/15/40/005
Примечания : Cited References: 30
Предметные рубрики: ABSORPTION-SPECTRA
FARADAY-ROTATION
SPIN-RESONANCE
IONS
GD3+
SPECTROSCOPY
BEHAVIOR
GD-3
Ключевые слова (''Своб.индексиров.''): doping (additives)--electronic structure--glass--lanthanum compounds--light absorption--magnetic susceptibility--oxides--paramagnetic resonance--positive ions--rate constants--substitution reactions--absorption band--gadolinium containing oxide glasses--positive weiss constants--gadolinium compounds
Аннотация: Magnetic susceptibility, electron paramagnetic resonance (EPR) and optical absorption have been studied in a glass system 20La(2)O(3)-22Al(2)O(3)-23B(2)O(3)-35(SiO2 + GeO2) with a part of La2O3 substituted by Gd2O3 in different concentrations. Positive Weiss constants have been found in more heavily doped glasses and ascribed to clustering of Gd3+ ions. Computer simulations of the EPR spectra show that the short-range ordering in the environment of the Gd3+ ions is well preserved. The relative distribution widths of the ligand coordinates are less than 2%. In the more heavily doped glasses the EPR spectra are superpositions of signals arising from isolated ions and ferromagnetic clusters. The increase of Gd3+ concentration is shown to change substantially the strong optical absorption edge while only small changes of f-f absorption band characteristics are observed. This difference is associated with the different effect of the Gd ion clustering on the mechanisms of the strong absorption in the ultraviolet region and the f-f absorption.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Langmayr D., Biernat H. K., Erkaev N. V.
Заглавие : Influence of kappa-distributed ions on the two-stream instability
Разночтения заглавия :авие SCOPUS: Influence of κ-distributed ions on the two-stream instability
Место публикации : Phys. Plasmas: AMER INST PHYSICS, 2005. - Vol. 12, Is. 10. - Ст.102103. - ISSN 1070-664X, DOI 10.1063/1.2065370
Примечания : Cited References: 30
Предметные рубрики: QUASI-PERPENDICULAR SHOCKS
FIELD STREAMING INSTABILITY
DISPERSION FUNCTION
MIRROR INSTABILITY
SPACE PLASMAS
EQUILIBRIUM
Ключевые слова (''Своб.индексиров.''): electromagnetic wave propagation--electrostatics--magnetism--magnetization--growth rate--modified two-stream instability (mtsi)--two-stream instability--plasma stability
Аннотация: This paper is the first approach for analyzing the influence of kappa-distributed particles on the modified two-stream instability (MTSI). It is assumed that the plasma consists of a magnetized Maxwellian electron contribution and unmagnetized kappa-distributed ions drifting across the electrons. Within an electrostatic approximation, the influence of the kappa parameter on the maximum growth rate of the MTSI is evaluated for the special case of parallel drift velocity and wave propagation.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Men'shikov V. V., Ovchinnikov S. G., Rudenko V. V., Sudakov A. N., Tugarinov V. I., Vorotynov A. M.
Заглавие : Magnetic anisotropy quantitative estimation for the rhombohedral antiferromagnetic crystals containing S-state ions - art. no. 224405 (Retracted Article. see vol 72, art. no. 189901, 2005)
Разночтения заглавия :авие SCOPUS: Magnetic anisotropy quantitative estimation for the rhombohedral antiferromagnetic crystals containing S-state ions
Место публикации : Phys. Rev. B: AMER PHYSICAL SOC, 2005. - Vol. 71, Is. 22. - Ст.224405. - ISSN 1098-0121, DOI 10.1103/PhysRevB.71.224405
Примечания : Cited References: 33
Предметные рубрики: ELECTRON-PARAMAGNETIC-RES
EXCHANGE-COUPLED PAIRS
RESONANCE MEASUREMENTS
GARNETS
MN-2
Аннотация: The method to investigate "single-ion" exchange anisotropy (as predicted by the pair model) is treated by exploration of several isostructural diamagnetic crystals containing magnetic impurities. The electron paramagnetic resonance (EPR) spectra were observed for ferric borate isostructural crystals MBO(3): Fe(3+) (M = Ga, In, Lu, Sc). The experimental dependences of the spin-Hamiltonian axial parameters of the second-order D(S) and fourth-order (a-F)(cS) versus total pair spin S are presented. The contributions arising from the distortion of the parent crystal lattice MBO3 under magnetic dilution are estimated. The microscopic derived expressions for the "single-ion" contribution to the anisotropy are also presented. The present experimental data enable estimation of the "single- ion" exchange contribution for FeBO(3), MnCO(3), and alpha-Fe(2)O(3) crystals at T= 0 K. The quantitative estimations for EPR are in satisfactory agreement among themselves and with the experimental data.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kliava J., Malakhovskii A. V., Edelman I. S., Potseluyko A. M., Petrakovskaja E. A., Melnikova S.V., Zarubina T. V., Petrovskii G., Bruckental Y., Yeshurun Y.
Заглавие : Unusual magnetic transitions and nature of magnetic resonance spectra in oxide glasses containing gadolinium
Место публикации : Phys. Rev. B: AMER PHYSICAL SOC, 2005. - Vol. 71, Is. 10. - Ст.104406. - ISSN 1098-0121, DOI 10.1103/PhysRevB.71.104406
Примечания : Cited References: 40
Предметные рубрики: ELECTRON-PARAMAGNETIC-RESONANCE
BORATE GLASSES
IONS
BEHAVIOR
GD3+
SPECTROSCOPY
SYSTEMS
GD-3+
FIELD
SHAPE
Ключевые слова (''Своб.индексиров.''): gadolinium--glass--lanthanide--oxide--anisotropy--article--chemical structure--concentration response--electron spin resonance--energy--magnetism--molecular physics--nanoparticle--phase transition--refraction index--temperature sensitivity
Аннотация: Magnetic susceptibility, electron paramagnetic resonance (EPR), and optical properties have been studied in a glass system {20La(2)O(3)-22Al(2)O(3)-23B(2)O(3)-35(SiO2+GeO2)} with a part of La2O3 substituted by Gd2O3 in different concentrations. Positive Weiss constants have been found in the more heavily doped glasses and ascribed to clustering of Gd3+ ions. Two magnetic phase transitions at 55 and 12 K were detected and ascribed, respectively, to ferromagnetic and antiferromagnetic clusters containing Gd ions. The overall shape of the EPR spectra shows the presence of clustering at the higher Gd contents. At low temperatures the cluster-related resonance signal is altered in shape, indicating an onset of magnetic anisotropy field. This signal is convincingly fitted to superparamagnetic resonance arising from ferromagnetic nanoparticles. The clustering, depending on the Gd concentration, correlates with a significant shift to lower energies of the strong optical absorption band edge, ascribed to a charge transfer transition between Gd ions. A nonmonotonous change of refractive index with the increase of the Gd content indicates changes in the glass matrix and in Gd cluster structure.
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