Processing of strong flux trapping high Tc oxide superconductors

Center director"s discretionary fund final report
  • 11 Pages
  • 4.51 MB
  • English

National Aeronautics and Space Administration, George C. Marshall Space Flight Center, For sale by National Technical Information Service , [Marshall Space Flight Center, Ala.], [Springfield, Va
Copper oxide superconductors., Magnetic suspension., Flux pinning., Magnetization., Oxides., Superconductors (Materials), Transition tempera
Statementby M.K. Wu ... [et al.].
SeriesNASA technical memorandum -- NASA TM-100350., NASA technical memorandum -- 100350.
ContributionsWu, Min-Kuang., George C. Marshall Space Flight Center.
The Physical Object
Paginationiv, 11 p.
ID Numbers
Open LibraryOL15407177M

Processing of strong flux trapping high T(subc) oxide superconductors: Center director's discretionary fund Article (PDF Available) February with 16 Reads How we measure 'reads'. Get this from a library. Processing of strong flux trapping high Tc oxide superconductors: Center director's discretionary fund final report.

[M K Wu; George C. Marshall Space Flight Center.;]. Melt Processing and Properties of Y-Ba-Cu-O (K Salama et al.) Melt Process, Flux Pinning and Levitation (M Murakami) Processing of the Thallium Oxide Superconductor (R D Blaugher) Irradiation Processing for Flux Pinning Enhancement in High-T c Superconductors (L Civale) Preparation of Low-Resistivity Contacts for High-T c Superconductors (J W Ekin).

Processing of High Temperature Superconductors., Volume Editor (s): Amit Goyal. Winnie Wong‐Ng. Masato Murakami.

Judith Driscoll. First published: 1 March Print ISBN: | Online ISBN: | DOI: / Optical observation of the domain structure in the iron garnet film clearly reveals the magnetic flux expulsion, penetration, and trapping and the magnetic field distribution. It was found that the flux motion reflected the uniform distribution of Y 2 BaCuO 5 inclusions introduced in the MPMG-process and in High-T c Oxide Superconductors Author: Satoshi Gotoh, Naoki Koshizuka, Masashi Yoshida, Hiroyuki Fujimoto, Masato Murakami.

The book covers the flux pinning mechanisms and properties and the electromagnetic phenomena caused by the flux pinning common for metallic, high-Tc and MgB2 superconductors. About this book. Introduction. The book covers the flux pinning mechanisms and properties and the electromagnetic phenomena caused by the flux pinning common for metallic, high-Tc and MgB2 superconductors.

The condensation energy interaction known for normal precipitates or grain boundaries and the kinetic energy interaction proposed for artificial Nb pins in Nb-Ti, etc., are. High-T c Superconducting (HTS) magnets operating in persistent current mode suffer a current decay due to flux creep of superconductor and joint pumps are able to inject direct current into superconducting circuit to compensate the current decay, without the thermal loss caused by current leads.

The present chapter describes an overview of flux trapping with enhancement of the critical current density (J c) of a melt-growth large domain (RE)Ba 2 Cu 3 O 7-d, where RE is a light rare earth ions such as Y, Gd or high-T c superconductor bulks have attracted much interest for a variety of magnet applications, since high density and large volume materials potentially provide an.

Since specific heat becomes extremely large as the temperature is raised, even large bulk samples can be used at high temperatures. This enables us to use large oxide superconductors in the bulk monolithic form. Although little attention has been paid to this fact, it is one of the most attractive features of high Tc materials.


About the authors.

Download Processing of strong flux trapping high Tc oxide superconductors PDF

About this book. The book covers the flux pinning mechanisms and properties and the electromagnetic phenomena caused by the flux pinning common for metallic, high-Tc and MgB2 superconductors.

The condensation energy interaction known for normal precipitates or grain boundaries and the kinetic energy interaction proposed for artificial Nb pins in Nb-Ti, etc.

are. The Performance of Superconductors at High Temperatures (D Dew-Hughes) Magnetic Flux Transport in Superconductors (J R Clem) On the Superconducting Phase Diagram of High Tc Superconductors (F de la Cruz) Resistive States in Layered Superconductors (P H Kes) Metastable Magnetic Properties of a Superconducting Glass Model (J V José).

superconductor should rea ct more strong ly to The highest Tc that has been achieved to date is in the copper oxide system1: kelvin at ambient pressure2 and kelvin at high pressures3.

4. Conclusion Observations of the magnetic flux penetration and trapping in Bi 2Sr2CaCu 2x single crystals have been performed using magnetic garnet films as a sensor of they flux changes.

The investigations revealed some peculiarities in the flux trapping effects, observed for the first time in high-Tc superconductors. Journals & Books; Help Download full text in PDF Download.

Advanced. Physica C: Superconductivity. Volumes –, Part 4, 1 DecemberPages High field trapping and flux creep of large QMG(Quench and Melt Growth) crystal. This paper describes the results of magnetic irreversibility measurements on high Tc yttrium-based superconducting samples.

The numerical analysis of. Importance of flux pinning. Flux pinning is desirable in high-temperature ceramic superconductors to prevent "flux creep", which can create a pseudo-resistance and depress both critical current density and critical field.

Degradation of a high-temperature superconductor's properties due to flux creep is a limiting factor in the use of these superconductors. High-temperature superconductors (abbreviated high-T c or HTS) are operatively defined as materials that behave as superconductors at temperatures above 77 K (− °C; − °F), the boiling point of liquid nitrogen, one of the simplest coolants in cryogenics.

All superconducting materials known at ordinary pressures currently work far below ambient temperatures and therefore require.

Flux trapping and its effect on AC susceptibility of granular superconductors Article (PDF Available) in Bulletin of Materials Science 17(6) November with 23 Reads. With excellent superconducting properties such as high T c, large H c2, small anisotropy, and large J c, developments of superconducting wires and tapes of iron-based superconductors (IBSs) have been undertaken with promising far, K-doped type IBSs have been mainly developed for such purposes.

Here, efforts to fabricate Na-doped type IBS, (Ba,Na)Fe 2 As 2, are presented. The 12th International Symposium on Superconductivity was held in Morioka, Japan, OctoberConvened annually sincethe symposium covers the whole field of superconductivity from fundamental physics and chemistry to a variety of applications.

At the 12th Symposium, a.

Description Processing of strong flux trapping high Tc oxide superconductors PDF

Melt processing and morphology of freeze dried YBa2Cu3O7-x high Tc superconductors D. Dierickx, O. Van der Biest, K. Rosseel, W. Boon and V.V.

Details Processing of strong flux trapping high Tc oxide superconductors EPUB

Moshchalkov et al. 1 Dec | Physica C: Superconductivity, Vol. Abstract: It is widely accepted that flux trapping is one of the most serious problems that could create an integration limit for superconductor integrated circuits. The ultimate goal of our project is to reduce the problem to a set of routine technical recommendations for SFQ circuit design.

To achieve the goal, we review known theories and recommendations for the reduction of flux trapping. The Physics of High Temperature Superconductors G. Steele May 9, Abstract We review the physics of high temperature superconductors.

We start by looking at the experimental facts and giving a general overview of the cuprate superconductors. Using this as motivation, we follow Anderson’s ideas for constructing a coherent theoretical.

The shields made of high Tc superconductors become one of their most important applications as it can work at liquid nitrogen temperature.

Some results of magnetic shielding on YBaCuO plates 1,2, disc and hollow cylinders 3,4,5,6 have been reported recently. Books, ETC. ACerS Bookstore; Ceramic Transactions; Ceramic Engineering and Science Proceedings Synthesis of High-Tc Oxide Superconductors, Superconductor Levitation, / The fabrication process of a high performance and pure c -axis grown GdBCO bulk superconductor with the TSMT-IG technique, Superconductor Science and.

A process based on metal precursors has been developed for fabricating filament Bi oxide superconductor-silver composite tapes with oxide and whole wire critical current densities of A description is given of a device for studying magnetic flux trapping in high temperature superconductors, in the temperature range – K, in external magnetic fields up to 8 T.

The characteristics of the device are given. Single grain, (RE)-Ba–Cu–O [(RE)BCO, where RE is a rare earth element or Y], bulk high temperature superconductors, have the ability to trap large magnetic fields that are typically more than an order of magnitude larger than those generated by conventional permanent magnets [].As a result, there is a wide range of potential applications for these materials, which include levitation.

These flux creep data of the foam strut piece directly reveals the strong flux pinning contribution of the tiny Y particles which were found in electron backscatter diffraction analysis [6, 11, 38].

Furthermore, it must be remarked here that the field is not oriented parallel to the c-axis of the material, but about 30 off.Lecture Type II Superconductors Outline 1.

A Superconducting Vortex 2. Vortex Fields and Currents 3. General Thermodynamic Concepts • First and Second Law • Entropy • Gibbs Free Energy (and co-energy) 4.

Equilibrium Phase diagrams 5. Critical Fields Octo Melt processed high-temperature superconductors M Murakami (World Scientific, Singapore) 7 Processing of bulk YBaCuO M Murakami, Superconductor Science and Technology 5 (4), 8 Critical currents and flux creep in melt processed high Tc oxide superconductors M Murakami, S Gotoh, N Koshizuka, S Tanaka, T Matsushita, S Kambe.