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Tuesday, July 28, 2020 | History

2 edition of Magnetic structures of rare-earth metals found in the catalog.

Magnetic structures of rare-earth metals

Dave Watson

Magnetic structures of rare-earth metals

by Dave Watson

  • 56 Want to read
  • 13 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D) - University of Birmingham, School of Physics and Space Research, Faculty of Science, 1997.

Statementby Dave Watson.
ID Numbers
Open LibraryOL17883159M

Niels Bohr Institutet – Niels Bohr Institutet - Københavns. These materials contain to ppm of rare-earth metals, which is more concentrated than the roughly to 60 ppm levels of the elements found in natural mineral deposits.

Rare-earth magnets are permanent magnets having a composition of alloys manufactured from rare earth element (mostly elements from lanthanide series, and alloys). They were developed in the years the s and s and are the strongest types of permanent magnets. DIYMAG Super Strong Neodymium Fishing Magnets, lbs( KG) Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt for Retrieving in River and Magnetic Fishing,Diameter inch(60 mm) out of 5 stars 1,

  Syntheses, Structures and Magnetic Properties of Rare Earth Metal‐Organic Frameworks (REMOFs) Templated by Silicotungstic Heteropolyanion Tianzhu Qin Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei.   The new method introduces magnetic nanoparticles consisting of a shell or framework that combines metal and an organic structure, or MOF, into the geothermal brine. The MOF outer layer carries molecules that are attrac­tive to rare earth elements, causing the elements .


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Magnetic structures of rare-earth metals by Dave Watson Download PDF EPUB FB2

The rare-earth metals have exotic (and sometimes complicated) magnetic structures that change with temperature. Most lanthanides have at least two magnetic structures. At room temperature gadolinium has the simplest structure.

All the 4f spins are aligned in one direction parallel to one another; this structure is called ferromagnetic gadolinium. 35 Magnetic Structures of Rare Earth Metals Roger A. Cowley Oxford Physics, Clarendon Laboratory, Parks Rd, Oxford OX1 3PU, UK and Jens Jensen Ørsted Laboratory, Niels Bohr Institute.

Recent progress in understanding the magnetic structures and excitations in rare earth metals Magnetic structures of rare-earth metals book summarized. The novel, long-range periodic structures which have been identified in Ho and Er.

Books Advanced Search New Releases Best Sellers & More Children's Books Textbooks Textbook Rentals Best Books of the Month of Rare Earth Elements in Ultramafic and Mafic Rocks and their Minerals: Minor and Accessory Minerals Handbook of Crystal Structures and Magnetic Properties of Rare Earth Intermetallics.

by Andrej. Abstract. In this chapter we review the magnetic structures of the rare earth metals and of certain of their alloys. Much of this information has been obtained Cited by: Magnetic Structures of Rare Earth Metals and Alloys.

Koehler. Pages Bulk Magnetic Properties. James J. Rhyne. Pages Spin Waves. Mackintosh, H. Bjerrum Møller. Pages Energy Band Structure, Indirect Exchange Interactions and Magnetic Ordering.

Both are thoroughly summarised in this book. It provides an. The rare-earth metals have high magnetic moments and a diverse range of magnetic structures magnetic properties are determined by the occupancy of the strongly localized 4f electronic. Read the latest chapters of Handbook on the Physics and Chemistry of Rare Earths atElsevier’s leading platform of peer-reviewed scholarly literature.

Purchase Metals, Volume 1 - 1st Edition. Print Book & E-Book. ISBNIt strengthens the oxide layer for better protection against corrosion but also changes the structure of stainless steel. Rare Earth Metals. Along with the above-mentioned metals, compounds of some rare earth elements also have excellent ferromagnetic properties.

Gadolinium, samarium, neodymium are all examples of magnetic rare earth metals. Discussions focus on rare earth intermetallic compounds, transition metals in noble metals, and other dilute alloys.

The text then examines the technical properties of soft magnetic materials, magnetically hard materials, thin films, and nuclear magnetism.

It is hoped that the book will provide a useful stimulus in this direction. It should also be of use to those who are interested in related disciplines, for example the rare earth compounds, or the transition metals.

In addition rare earths promise to be important technologically as alloy constituents. The rare earth metals and their alloys were the second objects after 3d metals where magnetocaloric properties were intensively investigated. This is related to the existence of different magnetic structures and transitions in these materials, the high values of their magnetization and the localized nature of the rare earth ion magnetic moment.

Rare-earth magnets are strong permanent magnets made from alloys of rare-earth ped in the s and s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets. The magnetic field typically produced by rare-earth magnets can exceed teslas.

1 Introduction.- 2 Phenomenological Theory of Magnetic Ordering: Importance of Interactions with the Crystal Lattice.- 3 Magnetic Structures of Rare Earth Metals and Alloys.- 4 Bulk Magnetic Properties.- 5 Spin Waves.- 6 Energy Band Structure, Indirect Exchange Interactions and Magnetic Ordering.- 7 Transport Properties.- 8 Hyperfine Interactions.

Generally at least one magnetic element is present in the structure, either on the M' metal site (3d or rare earth metal) or on the M metal site (rare earth or actinide metal).

Rare-earth element - Rare-earth element - Electronic structure and ionic radius: The chemical, metallurgical, and physical behaviours of the rare earths are governed by the electron configuration of these elements.

In general, these elements are trivalent, R3+, but several of them have other valences. The number of 4f electrons of each lanthanide is given in the table of the number of 4f. This book likewise covers the application of scandium oxide in an electron emission material and study on the effect of rare earth elements on the yield of wheat.

This publication is beneficial to researchers and scientists conducting work in the field of earth science. Some are well known and precious (platinum, palladium, germanium); others are “rare earth metals,” 17 obscure elements with names such as cerium, dysprosium, and yttrium.

Taken together, their yearly production is % that of steel, but they possess dazzling magnetic properties, making them essential in computers, cellphones, rechargeable. Rare Earth Elements A briefing note by the Geological Society of London Introduction The rare earth elements have long been recognised as useful because of their unusual chemical and physical properties.

Their natural occurrence is strongly dependent on geological circumstances, and only in a few locations are they found in sufficient quantity and.

A magnet is a material or object that produces a magnetic magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.

A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field.A neodymium magnet (also known as NdFeB, NIB or Neo magnet) is the most widely used type of rare-earth is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd 2 Fe 14 B tetragonal crystalline structure.

Developed independently in by General Motors and Sumitomo Special Metals, neodymium magnets are the strongest type of permanent magnet available. The electronic structure and magnetic coupling properties of rare-earth metals (Gd, Nd) doped ZnO have been investigated using first-principles methods.

We show that the magnetic coupling between Gd or Nd ions in the nearest neighbor sites is ferromagnetic.