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Tuesday, August 4, 2020 | History

2 edition of Superconductive materials and some of their properties found in the catalog.

Superconductive materials and some of their properties

Benjamin Washington Roberts

Superconductive materials and some of their properties

by Benjamin Washington Roberts

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  • 24 Currently reading

Published by U.S. Dept. of Commerce, National Bureau of Standards; for sale by the Superintendent of Documents, U.S. Govt. Print. Off. in [Washington] .
Written in English

    Subjects:
  • Superconductors

  • Edition Notes

    Includes bibliographies.

    Statement[by] B. W. Roberts. A report prepared for the Office of Standard Reference Data, Institute for Basic Standards, National Bureau of Standards, Washington, D.C.
    SeriesNBS technical note 408, NBS technical note ;, 408.
    ContributionsUnited States. Institute for Basic Standards. Office of Standard Reference Data.
    Classifications
    LC ClassificationsQC100 .U5753 no. 408
    The Physical Object
    Pagination1 v. (various pagings)
    ID Numbers
    Open LibraryOL6011041M
    LC Control Number66065752

    Introduction to the Electronic Properties of Materials, 2nd Edition presents the principles of the behavior of electrons in materials and develops a basic understanding with minimal technical detail. Broadly based, it touches on all of the key issues in the field and offers a multidisciplinary approach spanning physics, electrical engineering, and materials science/5(3). Some 29 metallic elements are known to be superconductors in their normal form, and another 17 become superconducting under pressure or when prepared in the form of thin films. The number of known superconducting compounds and alloys runs into the thousands. Superconductivity is thus a rather common characteristic of metallic conductors.

      The possibility to oxygenate the YBa2Cu3O7−δ(Y) structure to 7−δ ≈ atoms (which ensures the highest temperature of transition into the superconductive state of this compound) at high temperature (°C) and relatively low pressure (16 MPa) of oxygen has been first shown. This fact differs from the generally accepted notions of the equilibrium in the given by: 3. Some type I superconductors require incredible amounts of pressure in order to reach the superconductive state. One such material is sulfur which, requires a pressure of million atmospheres ( x 10 11 N/m 2) and a temperature of 17 °K to reach superconductivity. Some other examples of type I superconductors include Mercury - °K.

    Superconductivity the property of a material to induce no resistance on electric currents when they are passed throughout the material. We see that no material is a complete insulator -- all materials conduct electricity when cooled down to a cert. I believe the best text out there for practical superconductors. i took van duzer's class, and it was a pleasure. it pointed me in the direction of this book, but i've read it over and over again. it's one of my all time favorites. rather than starting off chapter 1 with superconductivity historically, he takes a very simple argument of density of states in a metal and introduces a gap to /5.


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Superconductive materials and some of their properties by Benjamin Washington Roberts Download PDF EPUB FB2

@article{osti_, title = {SUPERCONDUCTIVE MATERIALS AND SOME OF THEIR PROPERTIES}, author = {Roberts, B W}, abstractNote = {The extensive activity in the application of superconductive phenomena to devices such as computers, gyros, high field magnets, various electrical devices, and recently to large particle accelerators has produced an upsurge of materials research and several hundred newly discovered superconductive materials.

Full text of "Superconductive materials and some of their properties." See other formats. SUPERCONDUCTORS – MATERIALS, PROPERTIES AND APPLICATIONS.

under the Creative Commons Attribution license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications.

Superconductive materials and some of their properties / By Benjamin Washington Roberts and Institute for Basic Standards (U.S.).

Office of Standard Reference Data. Superconductive materials and some of their properties [by] B. Roberts High temperature superconductor materials and applications [microform]: final technical report for the Superconductor materials science: metallurgy, fabrication, and applications / edited by Simon Foner and.

Name Superconductive transition temp (K) Thermal expansion (ppm/°C) Melting point (°C) Vickers hardness (GPa) Young's modulus (GPa) Properties. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Short review of the topical comprehension of the superconductor materials classes Cuprate High-Temperature Superconductors, other oxide superconductors, Iron-based Superconductors, Heavy-Fermion Superconductors, nitride superconductors, organic and other carbon-based superconductors and boride and borocarbide.

PHYSICAL AND MECHANICAL PROPERTIES OF MATERIALS Melting temperature 9 Density 10 Young’s modulus 11 Yield stress and tensile strength 12 Fracture toughness 13 Environmental resistance 14 Uniaxial tensile response of selected metals and polymers 15 III.

MATERIAL PROPERTY CHARTSFile Size: KB. Superconducting properties and materials: subject feeds News. Superconductivity with broken time-reversal symmetry inside a superconducting s-wave state.

Phase diagram of the two-dimensional Hubbard-Holstein model. Emergence of superconductivity in doped. Get this from a library. Superconductive materials and some of their properties.

[Benjamin Washington Roberts; Institute for Basic Standards (U.S.). Office of Standard Reference Data.]. Most of the physical properties of superconductors vary from material to material, such as the heat capacity and the critical temperature, critical field, and critical current density at which superconductivity is destroyed.

On the other hand, there is a class of properties that are independent. Resistance in ohms of a specimen of mercury versus absolute temperature. This plot by Kamerlingh Onnes marked the discovery of superconductivity. Associated with the superconductive state is a perfect diamagnetism in which the magnetic flux is expelled from the material.

This is known as the Meissner effect [2]. zero resistance when their temperatures were lowered below a certain characteristic temperature of the material, called the critical temperature, Tc, some of which are given in Figure 2.

The Meissner effect InWalter Meissner and Robert Ochsenfeld discovered a magnetic phenomenon that showed that superconductors are not just perfect File Size: KB. The table below shows some of the parameters of common superconductors.

X:Y means material X doped with element Y, T C is the highest reported transition temperature in kelvins and H C is a critical magnetic field in tesla. "BCS" means whether or not the superconductivity is. The properties presented are superconductive critical temperature, critical magnetic fields, material state and composition including crystal‐structure type where noted, a key to thin‐film forms, and the presence of thermodynamic data (generally the electronic specific heat, γ, and Debye ϑ).Cited by: Superconducting materials exhibit a variety of interesting characteristic properties.

Zero resistance allows large and heavy conventional cables to be replaced with small, light superconducting cables. superconducting materials called High Temperature Superconductors (HTS), which become superconducting at the relatively high cryogenic temperature of –oC.

This chapter describes superconductivity, the materials and some devices that can be formed and notes some of the applications for their use making them interesting materials. However, some HTS materials superconduct at temperatures more than 50 degrees higher than the initial applications of superconductivity.

That makes them easier to cool and easier to use, opening up a wide range of applications to take advantage of the superconductor's special properties: zero resistance, magnetic field exclusion, low noise and extremely low power loss for high frequency electronics.

Ceramic materials would exhibit superconductive property when H, J, and T are less than Hc, Jc, and Tc, respectively, where Hc, Jc, and Tc are the critical magnetic field, current density, and temperature for superconductivity, respectively.

Consider a sphere made out of superconductive material. At T>Tc the material is in normal state. When external magnetic field is turned on, the external magnetic field penetrates through the material.

On the basis of Faraday’s law, r r E d l d dt z. = − Φ one would expect that at Tmaterial File Size: KB.The theory is based on a clue from the observation of the behavior of a superconductor in a magnetic field. It is a well-known fact that a superconductor does not allow a magnetic field to enter inside its body.

This affirmation implies that superconductivity has some relationship to the magnetic properties of materials.Define superconductive. superconductive synonyms, superconductive pronunciation, superconductive translation, English dictionary definition of superconductive.

n. The property of certain materials, including certain metals, alloys, and ceramics, to superconduct at temperatures ranging from a fraction of a kelvin to.