high temperature superconductor electronics status and perspectives
Handbook of High-Temperature Superconductor Electronics doc
Ngày tải lên :
27/06/2014, 15:20
... Handbook of Semiconductor Electrodeposition, f? K Pandey, S N Sahu, and S Chandra Bismuth-Based High- Temperature Superconductors, edited by Hiroshi Maeda and Kazumasa Togano Handbook of High- Temperature ... and A Ya Tzalenchuk Conductance Noise in High- Temperature Superconductors László Béla Kish Noise in High- Temperature Superconductor Josephson Junctions J.C Macfarlane, L Hao, and C.M Pegrum High- Temperature ... 10 High- Temperature Superconductor Microwave Devices Neeraj Khare 11 High- Temperature Superconducting IR Detectors John C Brasunas 12 Cryocoolers and High- Tc Devices Ray Radebaugh 13 High- Temperature...
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Báo cáo vật lý: "PHONON SPECTRA OF HIGH TEMPERATURE SUPERCONDUCTOR Bi2Sr2Ca2Cu3O10: THEORY AND EXPERIMENT" potx
Ngày tải lên :
07/08/2014, 14:20
... High Temperature Superconductor 56 pelletized and heated till the reaction was complete and a good homogeneity is ensured Appropriate amount of the matrix and BiO3 were mixed and pelletized and ... results Phonon Spectra of High Temperature Superconductor 54 An attempt has been made in this paper to study phonon frequencies in Bi2Sr2Ca2Cu3O10 high temperature superconductor in the frame ... normal-mode vibrations have been carried out for the high temperature superconductors and the assignment of specific modes are looked into for the clear understanding of the superconducting mechanism This...
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Handbook of High Temperature Superconductor Electronics Part 1 potx
Ngày tải lên :
10/08/2014, 19:20
... Handbook of Semiconductor Electrodeposition, f? K Pandey, S N Sahu, and S Chandra Bismuth-Based High- Temperature Superconductors, edited by Hiroshi Maeda and Kazumasa Togano Handbook of High- Temperature ... and A Ya Tzalenchuk Conductance Noise in High- Temperature Superconductors László Béla Kish Noise in High- Temperature Superconductor Josephson Junctions J.C Macfarlane, L Hao, and C.M Pegrum High- Temperature ... 10 High- Temperature Superconductor Microwave Devices Neeraj Khare 11 High- Temperature Superconducting IR Detectors John C Brasunas 12 Cryocoolers and High- Tc Devices Ray Radebaugh 13 High- Temperature...
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Handbook of High Temperature Superconductor Electronics Part 2 pps
Ngày tải lên :
10/08/2014, 19:20
... For low-Tc superconductors, this behavior is exhibited, in general, by alloys and compounds On the other hand, all highTc superconductors behave as type II superconductors For high- Tc superconductors, ... the high- Tc phase (22), a long sintering time is still required Toxicity and low vapor pressure of Hg–O and Tl–O make fabrication of Hgand Tl-based high- Tc superconductors much more difficult and ... Rights Reserved Introduction to High- Temperature Superconductors description of high- Tc superconductors in the form of bulk and thick films The preparation of high- Tc thin films is given in more...
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Handbook of High Temperature Superconductor Electronics Part 3 docx
Ngày tải lên :
10/08/2014, 19:20
... mismatch between the film and substrate, one must choose substrates that can withstand the high- temperature solutions of YBa2Cu3O7 at temperatures as high as 1000°C The growth temperature for liquid-phase ... exhibit high superconducting transition temperatures For optimally doped Tl2Ba2CanϪ1CunO2n0ϩ4, Tc ϭ 90, 110, and 125 K for n ϭ 1, 2, and 3, respectively For TlBa2CanϪ1CunO2nϩ3, Tc ϭ 44, 105, and ... sample annealing temperature, Tl-oxide partial pressure, and oxygen partial pressure, a two-zone furnace can be used in which the precursor film is placed in the high- temperature zone and thallium...
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Handbook of High Temperature Superconductor Electronics Part 4 pdf
Ngày tải lên :
10/08/2014, 19:20
... MgO, and CeO2 The insulating layer should be highly resistive at operating temperatures It should also be thermally stable at a deposition temperature as high as 800°C and not be poisonous to superconductors ... packaging, and so on The most commonly used technique to deposit high- temperature superconducting electrodes and the normalmetal layer is pulsed-laser deposition (PLD), although high- temperature ... ramp-edge superconductor/ normalmetal /superconductor (SNS) junction The active area of the device is located on the ramp, where the normal metal is sandwiched between the top and bottom superconductor...
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Handbook of High Temperature Superconductor Electronics Part 5 potx
Ngày tải lên :
10/08/2014, 19:20
... design and the integration on small and large scales The idea and the first demonstration are due to Daly et al (5) SEJs are obtained by the epitaxial growth of a high- Tc (transition temperature) ... boundaries in high critical temperature superconductors Among them, we have the mechanism based on the structural properties of the grain boundaries and the related bending of the electronic band structure ... FIGURE 4.6 High- resolution TEM pictures showing the microstructure of the YBCO film (a) on a 38° step and (b) on a 45° step for ratios t/h Ϸ 1/3 and respectively between the film thickness and the...
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Handbook of High Temperature Superconductor Electronics Part 6 ppsx
Ngày tải lên :
10/08/2014, 19:20
... All Rights Reserved Conductance Noise in High- Tc Superconductors 153 5.3.1.1 “Bulk” Temperature Regime At the high- temperature part of the conductorn superconductor transition region, when the ... spatially random in the sample and the distribution randomly changes when the temperature is varied The distribution of current density has the properties (percolation) of conductor superconductor random ... mechanism in random telegraph voltage noise in high- Tc superconductors Appl Supercond 6:391–397, 1998 G Jung, B Savo Elementary and macroscopic two-level fluctuations in high- Tc superconductors...
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Handbook of High Temperature Superconductor Electronics Part 8 pot
Ngày tải lên :
10/08/2014, 19:20
... motion and dissipation in high temperature superconductors IEEE Trans Magnetics M-27:828–832, 1991 R Gross, L Alff, A Beck, OM Froehlich, D Koelle A Max Physics and technology of high temperature ... specific properties of real high- Tc superconductors Copyright © 2003 by Marcel Dekker, Inc All Rights Reserved High- Temperature RF SQUIDS 213 Due to higher operating temperature for the SQUIDs, ... discussed Flux-creep noise in high- Tc magnetometers and “Josephson fluctuators” are analyzed Finally, the design and pilot applications of a high- Tc SQUID are discussed 7.2 HIGH- Tc SINGLE-JUNCTION...
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Handbook of High Temperature Superconductor Electronics Part 9 docx
Ngày tải lên :
10/08/2014, 19:20
... determined by the readout electronics In recent years, there has been considerable advancement in SQUID electronics (16–18) Direct-coupled SQUID electronics with large bandwidth and high slew rate at ... available and, thus, planar thin-film HTS flux transformers and gradiometers are used 8.3 HIGH- TC JOSEPHSON JUNCTIONS AND SQUIDS In the low-Tc SQUID, S-I-S (superconductor insulator superconductor) ... dB, and a bandwidth Ϸ1 Hz–20 kHz Conventionally, an induction coil is used for measuring the secondary field High- Tc SQUIDs having a high sensitivity, and a wide dynamic range and bandwidth are...
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Handbook of High Temperature Superconductor Electronics Part 10 pptx
Ngày tải lên :
10/08/2014, 19:20
... junctions in a T-FF and the Vd of that T-FF were compared and their temperature dependence was examined by Saito et al (27) The temperature dependences of the Ic Rn product and Vd are shown in ... of the superconductor and substrate restricts the choice of insulators It is highly desirable that the insulator can be deposited using the same technique used to deposit YBCO and at temperatures ... in SFQ circuits like Ag/Au, Cr, Pd, and Pd/Au (30) Among of them, Pd/Au had a much smaller temperature coefficient and higher resistance, especially at low -temperature, than Pd The sheet resistance...
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Handbook of High Temperature Superconductor Electronics Part 11 potx
Ngày tải lên :
10/08/2014, 19:20
... planar high- Tc filters show a low value of insertion loss and high out-of-band rejection only at low microwave power In order to use high- Tc filters for telecommunication, the high- power handling ... Narrow-band and compact high- Tc receiver bandpass filters have been developed for mobile communication applications (5,63,64,110,111) The low loss and high selectivity of the planar high- Tc multipole ... showed a very high quality factor and large power handling capability A breakthrough in the high spectral purity microwave oscillators and in frequency standard may be achieved using these high- Tc...
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Handbook of High Temperature Superconductor Electronics Part 12 docx
Ngày tải lên :
10/08/2014, 19:20
... K for K, s, a, l0, and the Debye temperature D are given in Table 11.1 for YBCO and candidate substrate and wire materials Note that the diffusion length of gold at 10 Hz and 90 K is fairly ... current (A), and dR/dT is the temperature derivative of the resistance Copyright © 2003 by Marcel Dekker, Inc All Rights Reserved 354 Brasunas (a) (b) (c) FIGURE 11.2 (a) High- temperature superconductor ... and signal or photon noise The Johnson and 1/ƒ noise can originate both in the bolometer itself and in following stages of the electronics The various noise sources are usually uncorrelated and, ...
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Handbook of High Temperature Superconductor Electronics Part 13 pdf
Ngày tải lên :
10/08/2014, 19:20
... cooling high- temperature superconductors and liquid helium is used for the cooling of low -temperature superconductors Copyright © 2003 by Marcel Dekker, Inc All Rights Reserved Cryocoolers and High- Tc ... power, at the temperature Tc, Q0 is the heat rejected to the surrounding at the temperature T0, mi and me are the mass ˙ ˙ flow rates at the system inlet and exit, respectively, hi and he are the ... the high- and low -temperature values than is the absolute COP The inverse of the COP is called the specific power and represents the watts of input power per watt of refrigeration For a low-temperature...
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Handbook of High Temperature Superconductor Electronics Part 14 pps
Ngày tải lên :
10/08/2014, 19:20
... between the Ic standard deviation and the number of junctions in a circuit Copyright © 2003 by Marcel Dekker, Inc All Rights Reserved High- Tc Superconductor Electronics: Status and Perspectives ... with high accuracy; thus, it is possible to observe the distribution of magnetic flux Copyright © 2003 by Marcel Dekker, Inc All Rights Reserved High- Tc Superconductor Electronics: Status and Perspectives ... to develop a high- quality AD converter of 200 MHz and 16 bits using very high- speed SFQ circuits 13.3 SQUID The SQUID is the most well-known superconducting device and it has a high sensitivity...
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silicon nanophotonics. basic principles, present status and perspectives, 2009, p.470
Ngày tải lên :
04/06/2014, 14:18
... Basic Principles, Present Status and Perspectives V012tp.indd 7/23/08 4:56:36 PM This page intentionally left blank Silicon Nanophotonics Basic Principles, Present Status and Perspectives Editor Leonid ... components as low propagation losses, high bandwidth, wavelength multiplexing and immunity to electromagnetic noise, the high cost of photonic components and their assembly is a major obstacle ... Ge can absorb infrared light over distances of a few microns thanks to its smaller bandgap High bandwidth and high responsivity Ge photodetector integrated into SOI waveguide have been reported.39,40...
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Technology status and perspectives in the bioenergy sector ppsx
Ngày tải lên :
06/07/2014, 18:20
... (facts) Higher technological standard => high investment costs Higher approval conditions => higher costs Examination and testing costs No agricultural subsidies Income of gate fees and energy ... Estonia, Lithuania and Poland these markets are virtually nonexistent today For biomethane and CNG as a transport fuel there are unfavourable and/ or inadequate policies, standards and regulation ... participating in the project, Italy, Germany and Sweden are most advanced in terms of number of gas vehicles and gas filling stations In Finland, Latvia, Czech Republic and Austria the use of these fuels...
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Báo cáo y học: "Ethnozoology in Brazil: current status and perspectives" pdf
Ngày tải lên :
10/08/2014, 09:22
... article as: Alves and Souto: Ethnozoology in Brazil: current status and perspectives Journal of Ethnobiology and Ethnomedicine 2011 7:22 Submit your next manuscript to BioMed Central and take full ... the new and different plants and animals that thrived in those lands In the centuries that followed these first contacts, explorers, chroniclers and naturalists from many disciplines and many ... Open Access Ethnozoology in Brazil: current status and perspectives Rụmulo RN Alves1* and Wedson MS Souto2 Abstract Ancient connections between animals and human are seen in cultures throughout...
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High Temperature Strain of Metals and Alloys Part 1 ppt
Ngày tải lên :
10/08/2014, 12:21
... of Strain at High Temperatures Physical Model and Theory 43 Velocity of Dislocations 45 Dislocation Density 49 Rate of the Steady-State Creep 51 43 High Temperature Strain of Metals and Alloys, ... at high temperatures and is also of great interest for materials science research and practical applications Mechanical tests were historically the first method of investigating the high- temperature ... Properties 111 Deformation at Lower Temperatures 116 Deformation at Higher Temperatures 124 On the Composition of Superalloys 129 Rafting 130 Effect of Composition and Temperature on γ/γ Misfit Other...
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High Temperature Strain of Metals and Alloys Part 2 pptx
Ngày tải lên :
10/08/2014, 12:21
... difference between values Qin and QT because the increase in temperature influences Q and the fraction in Eq (2.9) in opposite directions Measurements of Iin and Id as well as Iin and IT are performed ... determined by the X-ray method at high temperatures Pure metals, solid solutions and nickel-based superalloys have been studied 25 Structural Parameters in High- Temperature Deformed Metals 3.1 ... angle ω of the crystal rotation and the two angles, 2θ and ψ, of the detector motion Angles ω and 2θ are measured in the equatorial (horizontal) plane of the goniometer and angle ψ in the meridianal...
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