New Developments in Ferromagnetism Research - Bookswagon UAE
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Home > Mathematics and Science Textbooks > Physics > Electricity, electromagnetism and magnetism > New Developments in Ferromagnetism Research
New Developments in Ferromagnetism Research

New Developments in Ferromagnetism Research


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About the Book

Ferromagnetism is a form of magnetism that can be acquired in an external magnetic field and usually retained in its absence, so that ferromagnetic materials are used to make permanent magnets. A ferromagnetic material may therefore be said to have a high magnetic permeability and susceptibility (which depends upon temperature). Examples are iron, cobalt, nickel, and their alloys. Ultimately, ferromagnetism is caused by spinning electrons in the atoms of the material, which act as tiny weak magnets. They align parallel to each other within small regions of the material to form domains, or areas of stronger magnetism. In an unmagnetised material, the domains are aligned at random so there is no overall magnetic effect. If a magnetic field is applied to that material, the domains align to point in the same direction, producing a strong overall magnetic effect. Permanent magnetism arises if the domains remain aligned after the external field is removed. Ferromagnetic materials exhibit hysteresis. In 2004, it was discovered that a certain allotrope of carbon, nanofoam, exhibited ferromagnetism. The effect dissipates after a few hours at room temperature, but lasts longer at cold temperatures. The material is also a semiconductor. It is thought that other similarly formed materials, of boron and nitrogen, may also be ferromagnetic. This new book rings together leading research from throughout the world.

Table of Contents:
Preface; Survey of Misconceptions and Misinterpretations Concerning the Hysteresis Loop for Ferromagnets in Textbooks and Magnetism Literature; Metallic Ferromagnetism in a Generalised Hubbard Model; Electronic and Magnetic Properties of the Normal and Quaternary Full-Heusler Alloys: The Quest for New Half-Metallic Ferromagnets; Ferromagnetic Domain Walls and The Landau Functional; Paramagnetic-Ferromagnetic Transition in a Double-Exchange Model; The Classical Spectral Density Method at Work: The Heisenberg Ferromagnet; Spin Dependent Hot Electron Transport in Spin Valve Transistor: Role of Hot Electron Spin Polarisation and Schottky Barrier; Domain Structure in Ultrathin Ferromagnetic Films with Inclined Anisotropy; Index.


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Product Details
  • ISBN-13: 9781594544613
  • Publisher: Nova Science Publishers Inc
  • Publisher Imprint: Nova Science Publishers Inc
  • Height: 180 mm
  • No of Pages: 292
  • Weight: 842 gr
  • ISBN-10: 1594544611
  • Publisher Date: 18 Jul 2005
  • Binding: Hardback
  • Language: English
  • Returnable: N
  • Width: 260 mm


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