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Acoustooptic and elastic properties of NaBi(WO4)2 and LiBi(MoO4)2crystals / K. S. Aleksandrov [et al.] // Russ. Ultrason. - 1988. - Vol. 18, Is. 3. - P. 168-171 . - ISSN 0048-8828
Кл.слова (ненормированные):
Acoustooptical Devices--Materials -- Elasticity -- Lithium Compounds -- Sodium Compounds -- Acoustooptic Properties -- Bulk Acoustic Waves -- Elastic Properties -- Crystals
Аннотация: In recent years interest has been shown in crystals with the scheelite structure (point symmetry group 4/m) as promising materials for acoustooptic devices. However, nearly all the work done so far has been on the NaBi(MoO4)2 and PbMoO4 crystals. In this paper the authors give the results of a study of the elastic and acoustooptic properties of NaBi(WO4)2 and LiBi(MoO4)2 crystals from a series of isomorphic compounds with the scheelite structure carried out in order to determine the extent of the changes in the elastic and acoustooptic properties of this series of crystals when the structural elements are changed.

Scopus
Держатели документа:
USSR Acad of Sciences, Russian Federation

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Burkov, S. I.; Samkov, A. V.; Kholov, A.; Khafizov, S.Kh.; Shabanova, L. A.; Klevtsov, P. V.; Красноярский государственный университет
}
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Superconductivity near liquid nitrogen temperature in the Sn-Ba-Sr-Y-Cu-O system / K. S. Aleksandrov [et al.] // Physica C-Superconductivity and its Applications. - 1989. - Vol. 161, Is. 4. - P. 493-496, DOI 10.1016/0921-4534(89)90087-7 . - ISSN 0921-4534
Кл.слова (ненормированные):
Ceramic Materials -- Tin Compounds -- Bulk Superconductivity -- High Temperature Superconductors -- Oxide Superconductors -- Tin Barium Strontium Yttrium Copper Oxide -- Superconducting Materials
Аннотация: A high-Tc phase was found in the Sn-Ba-Sr-Y-Cu-O system. DC susceptibility data of Sn2Ba2Sr0.5Y0.5Cu3Ox show a single transition to bulk superconductivity with an onset temperature of 86 K. В© 1989.

Scopus

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Khrustalev, B. P.; Хрусталев, Борис Петрович; Krivomazov, S. N.; Петров, Михаил Иванович; Petrov, M. I.; Vasilyev, A. D.; Zwegintsev, S. A.
}
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Drokin, N. A.
Static and dynamic characteristics of the bulk and contact electric resistivity in CDCR2SE4 under stochastic current instability / N. A. Drokin, S. M. Ganiev // Fiz. Tverd. Tela. - 1992. - Vol. 34, Is. 7. - P. 2122-2128. - Cited References: 21 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
OSCILLATIONS
CHAOS
GE

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Доп.точки доступа:
Ganiev, S. M.; Дрокин, Николай Александрович
}
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Effects of static electric field and of mechanical pressure on surface acoustic waves propagation in La3Ga5SiO14 piezoelectric single crystals / K. S. Aleksandrov [et al.] // Proc IEEE Ultrason Symp. - 1995. - Vol. 1. - P. 409-412 . - ISBN 1051-0117
Кл.слова (ненормированные):
Electric field effects -- Electrostriction -- Lanthanum compounds -- Piezoelectric materials -- Piezoelectricity -- Pressure effects -- Quartz -- Single crystals -- Tensors -- Bulk acoustic wave -- Dielectric permeability -- Electromechanical bond coefficients -- Lanthanum gallium silicide -- Mechanical pressure -- Nonlinear electromechanical properties -- Nonlinear piezoelectric effect -- Piezoquartz -- Static electric field -- Tensorial components -- Ultrasonic propagation
Аннотация: The complete set of tensorial components of linear and nonlinear electromechanical properties for La3Ga5SiO14 piezoelectric crystals have been obtained. These data were used for the analysis of influence of static electrical field and of uniaxial homogeneous mechanical pressure on the propagation of surface acoustic waves.

Scopus

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Sorokin, B. P.; Turchin, P. P.; Burkov, S. I.; Glushkov, D. A.; Karpovich, A. A.; IEEE International Ultrasonics Symposium(1995 ; Nov. ; 7-10 ; Seattle, USA)
}
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Critical currents in bulk Y3/4Lu1/4Ba2Cu3O7+BaPbO3 composites / M. I. Petrov [et al.] // Phys. Lett. A. - 1997. - Vol. 237, Is. 1-2. - P. 85-89, DOI 10.1016/S0375-9601(97)00694-4. - Cited References: 24 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
HIGH-TC-SUPERCONDUCTORS
WEAK LINKS
JUNCTIONS
Кл.слова (ненормированные):
YBaCuO+BaPbO3 bulk composites -- network of weak S-N-S links -- critical current density
Аннотация: Bulk composites Y3/4Lu1/4Ba2Cu3O7 + BaPbO3 with BaPbO3 volume content of 0-60% have been prepared. Temperature dependences of resistance and critical current density J(c)(T) are presented. The best agreement of experimental J(c)(T) with theory has been reached for the Gunsenheimer-Schussler-KUmmel consideration of superconductor-normal metal-superconductor (S-N-S) junctions in the "clean" limit. (C) 1997 Elsevier Science B.V.

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Держатели документа:
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Shaihutdinov, K. A.; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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    Critical currents in bulk Y3/4Lu1/4Ba2Cu3O7 + BaPbO3 composites / M. I. Petrov [et al.] // Physics Letters, Section A: General, Atomic and Solid State Physics. - 1997. - Vol. 237, Is. 1-2. - P. 85-89
Рубрики:
HIGH-TC-SUPERCONDUCTORS
   WEAK LINKS
   JUNCTIONS
Кл.слова (ненормированные):
Bulk composites -- Critical current density -- Network of weak S-N-S links -- YBaCuO + BaPbO3 -- YBaCuO+BaPbO3 bulk composites -- network of weak S-N-S links -- critical current density
Аннотация: Bulk composites Y3/4Lu1/4Ba2Cu3O7 + BaPbO3 with BaPbO3 volume content of 0-60% have been prepared. Temperature dependences of resistance and critical current density Jc(T) are presented. The best agreement of experimental Jc(T) with theory has been reached for the Gunsenheimer-Schussler-Kummel consideration of superconductor-normal metal-superconductor (S-N-S) junctions in the "clean" limit. В© 1997 Elsevier Science B.V.

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Доп.точки доступа:
Петров, Михаил Иванович; Petrov, M. I.; Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Оспищев С. В.; Шайхутдинов, Кирилл Александрович; Shaikhutdinov, K. A.; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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Prodaivoda, G. T.
Elastic symmetry and anisotropic parameters of specimens of Archean gneisses and Kola superdeep-borehole amphibolites / G. T. Prodaivoda, K. S. Aleksandrov // Geol. Geofiz. - 1998. - Vol. 39, Is. 3. - P. 375-385. - Cited References: 22 . - ISSN 0016-7886
Рубрики:
ROCKS
Кл.слова (ненормированные):
Kola superdeep borehole -- gneisses -- amphibolites -- elastic symmetry -- anisotropy -- bulk elastic waves -- microfracture orientation
Аннотация: Using an invariant-polarization ultrasound method, we have studied the velocities of elastic waves in the gneisses and amphibolites of the second rock mass of the Archean complex of the Kola superdeep borehole (7622-9456 m) and calculated the determinate components of acoustic tensor and elastic-constant tensor and their symmetry. The symmetry of the studied structures is shown to be rhombic and triclinic. The stereoprojections of mineral's crystallographic orientation and normals to microfractures are built by the data on the inversion of the azimuthal dependence of elastic constants.

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Публикация на "русском" языке

Держатели документа:
Kiev State Univ, Ul Vasilkovskaya 90, UA-252022 Kiev, Ukraine
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Продайвода, Георгий Трофимович
}
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Sorokin, B. P.
Influence of non-homogeneous uniaxial pressure on the propagation of bulk acoustic waves in crystals / B. P. Sorokin, A. N. Marushyak, K. S. Aleksandrov // Proc Annu IEEE Int Freq Control Symp. - 2000. - P. 404-409 . - ISBN 0161-6404
Кл.слова (ненормированные):
Acoustic bulk wave devices -- Calculations -- Crystal defects -- Crystal symmetry -- Functions -- Pressure effects -- Tensors -- Cubic crystal -- Green-Christoffel equation -- Uniaxial mechanical pressure -- Acoustic wave propagation
Аннотация: The development of the theory of propagation small amplitude bulk acoustic waves in crystals under the uniaxial mechanical pressure has made by taking into account the condition of non-homogeneous deformation of crystal sample. It has been shown that the path of bulk acoustic waves will be function of a kind non-homogeneous deformation. As an example the calculation for some crystal directions of cubic crystal Bi12GeO20 (23 point symmetry) has made.

Scopus

Доп.точки доступа:
Marushyak, A. N.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; IEEE Annual frequency control symposium(54 ; 2000 ; Jun. ; 7-9 ; Kansas)
}
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Elastic anharmonicity and elastic constants temperature dependences of different quality quartz crystals / B. P. Sorokin [et al.] // Proc Annu IEEE Int Freq Control Symp. - 2000. - P. 410-415 . - ISBN 0161-6404
Кл.слова (ненормированные):
Acoustic bulk wave devices -- Acoustic wave propagation -- Elastic moduli -- Pressure effects -- Quartz -- Thermal effects -- Crystal quality -- Elastic anharmonicity -- Mechanical pressure -- Second order elastic constant -- Temperature coefficients -- Crystal structure
Аннотация: SOEC temperature dependences of different quality quartz crystals were studied. The simplified phenomenological theory was applied to calculate second order elastic constant temperature dependences. The bulk acoustic waves propagation under the bias of temperature field or of the uniaxial mechanical pressure was considered. It was found that crystal quality changes have caused certain variations of some third order elastic constant values and some temperature coefficients.

Scopus

Доп.точки доступа:
Sorokin, B. P.; Glushkov, D. A.; Turchin, P. P.; Michailyuta, S. V.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Doubovsky, A. B.; IEEE Annual frequency control symposium(54 ; 2000 ; Jun. ; 7-9 ; Kansas)
}
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10.

Bulk acoustic waves propagation in Li2B4O7 piezoelectric crystals under the static uniaxial mechanical pressure / K. S. Aleksandrov [et al.] // Proceedings of the Annual IEEE International Frequency Control Symposium / Annual frequency control symposium (54 ; 2000 ; Jun. ; 7-9 ; Kansas, MO). - 2000. - P. 214-217. - Cited References: 8 . - ISBN 01616404
Кл.слова (ненормированные):
Acoustic wave transmission -- Acoustic wave velocity -- Elasticity -- Lithium compounds -- Mathematical models -- Permittivity -- Piezoelectricity -- Pressure effects -- Single crystals -- Electromechanical constants -- Piezoelectric crystal -- Piezoelectric materials
Аннотация: The influence of uniaxial mechanical stresses on bulk acoustic waves velocity in piezoelectric crystals Li2B4O7 has been investigated. Electromechanical constants have determined.

Scopus

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Turchin, P. P.; Sorokin, B. P.; Karpovich, A. A.; Nefedov, V. A.; Annual frequency control symposium(54 ; 2000 ; Jun. ; 7-9 ; Kansas, MO)
}
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11.

Superconductor-semiconductor-superconductor junction network in bulk polycrystalline composites Y3/4Lu1/4Ba2Cu3O7 + Cu1-xLixO / M. I. Petrov [et al.] // Superconductor Science and Technology. - 2001. - Vol. 14, Is. 9. - P. 798-805, DOI 10.1088/0953-2048/14/9/333 . - ISSN 0953-2048
Кл.слова (ненормированные):
Critical current density (superconductivity) -- Josephson junction devices -- Polycrystalline materials -- Superconductivity -- Thermal effects -- Transport properties -- Superconductor junction networks -- Semiconductor junctions
Аннотация: Bulk Y3/4Lu1/4Ba2Cu3O7 + Cu1-xLixO composites with x = 0, 0.003 and 0.06 and varied volume content of Cu1-xLixO have been prepared. Analysis of the transport properties of the composites has shown that they can be represented as a network of superconductor-semiconductor-superconductor (S-Sm-S) weak links. The dependence of the critical current density on the normal resistance for the composites studied shows a behaviour similar to that for single Josephson junctions. The experimental temperature dependences of the critical current are qualitatively described in terms of a theory of S-Sm-S junctions that takes into account the Andreev reflection of carriers from the S-Sm and Sm-S interfaces.

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Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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12.

The effect of paramagnetic impurities in normal metal on the critical current in a network of S-N-S Josephson junctions in bulk Y3/4Lu1/4Ba2Cu3O7+BaPb(1-x)Fe(x)O(3)composites / D. A. Balaev [et al.] // Supercond. Sci. Technol. - 2003. - Vol. 16, Is. 1. - P. 60-64, DOI 10.1088/0953-2048/16/1/311. - Cited References: 41 . - ISSN 0953-2048

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
CURRENT-VOLTAGE CHARACTERISTICS
   WEAK LINKS
   RESISTIVE PROPERTIES
   MAGNETIC-IMPURITIES
   EXCHANGE FIELD
   SNS JUNCTIONS
   F-S
   COMPOSITES
   SUPERCONDUCTOR
   SCATTERING
Кл.слова (ненормированные):
Critical currents -- Interfaces (materials) -- Josephson junction devices -- Paramagnetism -- Transport properties -- Non-superconducting ingredient -- Paramagnetic impurities -- Superconductor normal metal superconductor -- Oxide superconductors
Аннотация: Bulk Y3/4Lu1/4Ba2Cu3O7 + BaPb1-xFexO3 composites representing a model of a network of superconductor-normal metal-superconductor (SNS) Josephson junctions with paramagnetic impurities (Fe) in the N layers have been prepared. The transport properties of the composites have been studied. An exponential decay of the critical current with increasing Fe content in the non-superconducting ingredient of the composite has been observed. Such a behaviour is accounted for in terms of the de Gennes proximity effect theory.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Petrov, M. I.; Петров, Михаил Иванович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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13.

Magnetoresistive effect in bulk composites 1-2-3 YBCO+CuO and 1-2-3 YBCO+BaPb(1-x)SnxO(3) and their application as magnetic field sensors at 77 K / D. A. Balaev [et al.] // Supercond. Sci. Technol. - 2004. - Vol. 17, Is. 1. - P. 175-181, DOI 10.1088/0953-2048/17/1/031. - Cited References: 27 . - ISSN 0953-2048

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
PHASE-SLIP
   SUPERCONDUCTOR
   TEMPERATURE
   YBA2CU3O7-DELTA
   TRANSITION
Кл.слова (ненормированные):
Ceramic materials -- Composite materials -- Critical current density (superconductivity) -- High temperature operations -- High temperature superconductors -- Lead compounds -- Magnetoresistance -- Sensors -- Yttrium barium copper oxides -- High temperature superconductor ceramics -- Magnetic field sensors -- Magnetoresistive effect -- Transport current density -- Oxide superconductors
Аннотация: We have studied the magnetoresistive effect in bulk 1-2-3 YBCO + CuO and 1-2-3 YBCO + BaPb1-xSnxO3 composites prepared using the fast backing technique. We have found that the composites exhibit large magnetoresistance in low magnetic fields (< 100 Oe) for a broad temperature range. We have studied the experimental dependences of resistivity versus magnetic field at various transport current densities. The high-T-C superconductor (HTSC) based composites exhibit a much higher sensitivity to weak magnetic fields at liquid nitrogen temperature, compared to that for pure HTSC ceramics. This effect is attractive for practical applications and the composite materials can be used as active elements in magnetic field sensor devices.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
Kirensky Inst of Physics, 660036, Krasnoyarsk, Russian Federation
RSSAU, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Shaihutdinov, K. A.; Popkov, S. I.; Попков, Сергей Иванович; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Petrov, M. I.; Петров, Михаил Иванович
}
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14.

Theory and computer simulation of the reflection and refraction of bulk acoustic waves in piezoelectrics under the action of an external electric field / S. I. Burkov [et al.] // Crystallogr. Rep. - 2005. - Vol. 50, Is. 6. - P. 986-993, DOI 10.1134/1.2132408. - Cited References: 11 . - ISSN 1063-7745
Аннотация: The basic equations describing the conditions for reflection and refraction of bulk acoustic wave at the interface between acentric crystals subjected to the action of a uniform external electric field are reported. Numerical analysis of the effect of this field on the reflection and refraction anisotropy of bulk acoustic waves at the crystal/vacuum and piezoelectrie/elastic-isotropic-medium interfaces is performed. (C) 2005 Pleiades Publishing, Inc.

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Публикация на русском языке Теория и компьютерное моделирование процессов отражения и преломления объемных акустических волн в пьезоэлектриках при воздействии внешнего электрического поля [Текст] / С. И. Бурков [и др.] // Кристаллография. - 2005. - Т. 50 Вып. 6. - С. 1065-1072

Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Burkov, S. I.; Sorokin, B. P.; Glushkov, D. A.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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15.

The mechanisms responsible for broadening of the resistive transition under magnetic field in the Josephson junction network realized in bulk YBCO+CuO composites / D. A. Balaev [et al.] // Physica C. - 2006. - Vol. 435, Is. 1-2. - P. 12-15, DOI 10.1016/j.physc.2006.01.008. - Cited References: 15 . - ISSN 0921-4534

РУБ Physics, Applied
Рубрики:
SUPERCONDUCTORS
MODEL
Кл.слова (ненормированные):
Josephson network -- YBCO plus CuO composites -- dissipation -- magnetic field -- Dissipation -- Josephson network -- Magnetic field -- YBCO + CuO composites -- Composite materials -- Copper compounds -- Mathematical models -- Phase transitions -- Semiconductor junctions -- Yttrium compounds -- Creep model -- Josephson network -- YBCO + CuO composites -- Magnetic field effects
Аннотация: The experimental results of the effect of the magnetic field (up to 60 kOe) on the broadening of the resistive transition of bulk composites Y3/4Lu1/4Ba2CU3O7 (YBCO) + CuO are presented. These composites represent the network of the tunnel-type Josephson junctions where the copper oxide acts as a material forming barriers between YBCO crystallites. The mechanisms responsible for broadening of the resistive transition under magnetic field are discussed. The analysis of experimental R(7) dependences have shown that in the low field range 0-10(2) Oe, the R(7) dependences are described well by the Ambegaokar-Halperin (AH) model. In the range 10(3)-6 x 10(4) Oe, the dissipation follows Arrhenius law R similar to exp(-U(H)/k(B)T) characteristic for thermally activated flux creep model. In the range H similar to 10(2)-10(3), the crossover from AH to flux creep dissipation mechanisms occurs. (c) 2006 Elsevier B.V. All rights reserved.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaihutdinov, K. A.; Petrov, M. I.; Петров, Михаил Иванович; International Workshop on Weak Superconductivity(2005 ; Sept. ; 16-19 ; Bratislava, Slovakia)
}
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16.

Aplesnin, S. S.
Anomalies in magnetoresistance and in the bulk modulus for ferromagnetics with four-spin exchange interaction on the Kondo lattice / S. S. Aplesnin, N. I. Piskunova // J. Phys.: Condens. Matter. - 2006. - Vol. 18, Is. 29. - P. 6859-6868, DOI 10.1088/0953-8984/18/29/023. - Cited References: 29 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
MIXED-VALENCE MANGANITES
   PHASE-SEPARATION
   LA1-XSRXMNO3
   BEHAVIOR
   PECULIARITIES
   TRANSITION
Кл.слова (ненормированные):
Elastic moduli -- Electric resistance -- Ferromagnetism -- Function evaluation -- Paramagnetism -- Transceivers -- Adiabatic approximation -- Kondo lattice -- Paramagnetic state -- Ring exchange -- Magnetoresistance
Аннотация: The temperature dependence of resistivity and the bulk modulus are calculated on the Kondo lattice, with ring exchange between localized spins, using the spin-polaron and adiabatic approximation. Peak and zero values of the bulk modulus as functions of temperature and concentration are determined below the temperature of the transition to the paramagnetic state. The effects of the nearest order between transverse spin components and a value of the ring exchange between localized spins on magnetoresistivity are estimated.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
MF Reshetneva Aircosm Siberian State Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
L v Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
M F Reshetneva Aircosmic Siberian State University, Krasnoyarsk, 660014, Russian Federation

Доп.точки доступа:
Piskunova, N. I.; Аплеснин, Сергей Степанович
}
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17.

Study of dependence upon the magnetic field and transport current of the magnetoresistive effect in YBCO-based bulk composites / D. A. Balaev [et al.] // Supercond. Sci. Technol. - 2007. - Vol. 20, Is. 6. - P. 495-499, DOI 10.1088/0953-2048/20/6/002. - Cited References: 25 . - ISSN 0953-2048

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
CERAMIC SUPERCONDUCTORS
   DISSIPATION
   TRANSITION
   SENSORS
   MOTION
   FILMS
Кл.слова (ненормированные):
Current voltage characteristics -- Lorentz force -- Magnetic field effects -- Magnetic flux -- Magnetic sensors -- Magnetoresistance -- Intergrain boundaries -- Magnetic field sensor devices -- Magnetoresistance curves -- Magnetoresistive properties -- Yttrium barium copper oxides
Аннотация: The magnetoresistive properties of bulk YBCO + CuO and YBCO + BaPb0.75Sn0.25O3 composites for different orientations of external magnetic field H and macroscopic transport current j have been measured. These composites exhibit large magnetoresistance in weak magnetic fields (< 100 Oe), which makes them promising candidates for practical application in magnetic field sensor devices. The difference between.( T) dependences, magnetoresistance curves R( H) and current - voltage characteristics measured for H parallel to j and H || j is observed indicating the presence of the Lorentz- force- dependent dissipation in the composites. Angular dependences of magnetoresistance R(theta) ( where theta = angle H, j) of the composites in weak magnetic fields are found to be proportional to sin(2)theta. This fact suggests that the flux flow in the intergrain boundaries is responsible for the large magnetoresistive effect observed in the composites.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Prus, A. G.; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Petrov, M. I.; Петров, Михаил Иванович
}
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18.

Hysteretic behavior of the magnetoresistance and the critical current of bulk Y3/4Lu1/4Ba2Cu3O7 + CuO composites in a magnetic field / D. A. Balaev [et al.] // Physica C-Superconductivity and its Applications. - 2007. - Vol. 460-462 II, spec. iss. - P. 1307-1308, DOI 10.1016/j.physc.2007.03.346 . - ISSN 0921-4534

РИНЦ
Держатели документа:
Kirensky Institute of Physics

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Popkov, S. I.; Попков, Сергей Иванович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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19.

Hysteretic behavior of the magnetoresistance and the critical current of bulk Y3/4Lu1/4Ba2CU3O7+CuOcomposites in a magnetic field / D. A. Balaev [et al.] // Physica C. - 2007. - Vol. 460: 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (JUL 09-14, 2006, Dresden, GERMANY). - P. 1307-1308, DOI 10.1016/j.physc.2007.03.346. - Cited References: 7 . - ISSN 0921-4534

РУБ Physics, Applied
Рубрики:
SUPERCONDUCTORS
Кл.слова (ненормированные):
HTSC -- resistivity -- magnetic field -- relaxation -- HTSC -- Magnetic field -- Relaxation -- Resistivity -- Crystallites -- Magnetic fields -- Magnetic hysteresis -- Magnetoresistance -- Yttrium barium copper oxides -- Superconducting crystallites -- Superconducting systems -- Tunnel-type Josephson junctions -- Josephson junction devices
Аннотация: The hysteretic behavior of critical current j(C)(H) and magneto-resistance R(H) of composites Y-Ba-Cu-O + CuO have been studied and presented. The composites represent the network of tunnel-type Josephson junctions where copper oxide acts as a material forming barriers between superconducting (YBCO) crystallites. The characteristic features of R(H) and j(C)(H) dependences are discussed in the frames of the conception of "two level superconducting system" (the Josephson media and HTSC crystallites) which is realized in the composites under study. (c) 2007 Elsevier B.V. All rights reserved.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Popkov, S. I.; Попков, Сергей Иванович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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20.

Preparation, microstructure, magnetic and transport properties of bulk textured Bi(1.8)Pb(0.3)Sr(1.9)Ca(2)Cu(3)O(x) and Bi(1.8)Pb(0.3)Sr(1.9)Ca(2)Cu(3)O(x)+Agceramics / M. I. Petrov [et al.] // Supercond. Sci. Technol. - 2008. - Vol. 21, Is. 10. - Ст. 105019, DOI 10.1088/0953-2048/21/10/105019. - Cited References: 22. - This work is supported by program of RAS 'Quantum macrophysics' No. 3.4 and integration project of SB RAS No. 3.4 and in part by Krasnoyarsk Regional Scientific Foundation (KRSF), Grants 17G057, 18G148 and 18G011. DAB and AAD acknowledge the Russian Science Support Foundation. . - ISSN 0953-2048

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   CRITICAL-CURRENT DENSITY
   BI-2223 TAPES
   BI2223
   SILVER
   DISCS
   (BI
Кл.слова (ненормированные):
Building materials -- Calcium -- Copper -- Crystallites -- Diamagnetic materials -- Lead -- Lead alloys -- Magnetic anisotropy -- Magnetic properties -- Nanocrystalline alloys -- Silver -- Textures -- Transport properties -- Bi-2223 -- Bulk samples -- Degree of textures -- Diamagnetic responses -- Liquid mediums -- Magnetic and transport properties -- Magnetic measurements -- Room temperatures -- Ceramic materials
Аннотация: A new method of preparation of bulk textured Bi2223 ceramics and Bi2223 + Ag composites, based on room temperature pressing of foamed precursor (Bi2223, Bi2223 + Ag) in a liquid medium, is proposed. SEM and XRD data prove a high degree of texture of the bulk samples obtained. Magnetic measurements performed in directions H parallel to c-axis and H parallel to a-b-planes of Bi2223 crystallites demonstrates anisotropy of magnetization confirming the texture of the ceramics. The materials obtained possess large diamagnetic response in the direction H parallel to a-b-planes of Bi2223 crystallites at both 77.4 and 4.2 K.

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Держатели документа:
[Petrov, M. I.
Shaikhutdinov, K. A.
Balaev, D. A.
Dubrovskii, A. A.
Popkov, S. I.
Vasil'ev, A. D.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Belozerova, I. L.] Reshetnev Siberian State Aerosp Univ, Krasnoyarsk, Russia
[Mart'yanov, O. N.] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Boreskov Institute of Catalysis, 630090, Novosibirsk, Russian Federation

Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Belozerova, I. L.; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Popkov, S. I.; Попков, Сергей Иванович; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Mart'yanov, O. N.
}
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