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6 edition of Magnetic properties of fine particles found in the catalog.

Magnetic properties of fine particles

proceedings of the International Workshop on Studies of Magnetic Properties of Fine Particles and their Relevance to Materials Science, Rome, Italy, November 4-8, 1991

by International Workshop on Studies of Magnetic Properties of Fine Particles and their Relevance to Materials Science (1991 Rome, Italy)

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  • 36 Currently reading

Published by North-Holland in Amsterdam, Netherlands, New York .
Written in English

    Subjects:
  • Particles -- Congresses.,
  • Magnetic materials -- Congresses.,
  • Magnetism -- Congresses.

  • Edition Notes

    Includes bibliographical references and index.

    Statementedited by J.L. Dormann, D. Fiorani.
    SeriesNorth-Holland delta series
    ContributionsDormann, J. L., Fiorani, D.
    Classifications
    LC ClassificationsTA418.78 .I58 1991
    The Physical Object
    Paginationxiv, 430 p. :
    Number of Pages430
    ID Numbers
    Open LibraryOL1718011M
    ISBN 100444895523
    LC Control Number92020648


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Magnetic properties of fine particles by International Workshop on Studies of Magnetic Properties of Fine Particles and their Relevance to Materials Science (1991 Rome, Italy) Download PDF EPUB FB2

Purchase Magnetic Properties of Fine Particles - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. All aspects of fine magnetic particles are covered in the 46 papers.

The topics are remarkably interdisciplinary covering theory, materials preparation, structural characterization, optical and electrical properties, magnetic properties studied by different techniques and applications.

Oprah’s Book Club Magnetic Properties of Fine Particles. J.L. Dormann. $; $; Publisher Description. There have not been many changes in the use or the understanding of the concept of superparamagnetism since Jacobs and Bean [1] reviewed it almost 30 years ago.

The measuring techniques have improved during that time, and have become. Get this from a library. Magnetic properties of fine particles: proceedings of the International Workshop on Studies of Magnetic Properties of Fine Particles and their Relevance to Materials Science, Rome, Italy, November[J L Dormann; D Fiorani;] -- The aim of this volume is to advance the understanding of the fundamental properties of fine magnetic particles and to.

Abstract. Magnetic fine particles find a large number of applications, perhaps most notably as particulate recording media.

In addition, the ideas of fine particle magnetism are applicable in a number of areas as diverse as geomagnetism and by: Magnetic Properties of Fine Particles Proceedings of the International Workshop on Studies of Magnetic Properties of Fine Particles and their Relevance to Materials Science Rome, Italy, NovemberEdited by J.L.

Magnetic properties of fine particles book Dormann Laboratoire de Magnetisme C.N.R.S. Paris, France D. Fiorani I.T.S.E., C.N.R. Rome, Italy NORTH-HOLLAND.

The magnetic properties (such as the saturation magnetization, the exchange stiffness constant, the local magnetic anisotropy field, the ferromagnetic resonance linewidth) of fine Co-P particles. Abstract. Many kinds of materials contain magnetic fine particles and this makes the study of their properties an interdisciplinary topic with applications to various branches of sciences as solid state physics, metallurgy, mineralogy, geology, catalysis, fine-arts.

This theory describes the magnetic properties of ellipsoidal magnetic particles, including the conditions for the homogeneous reversal of their magnetization under applied magnetic field. Magnetic nanoparticles present spin arrangements that may be single domain, vortex state, or multidomain, with their Magnetic properties of fine particles book behavior depending on the spin.

The size of the magnetic particles is also very important. Dry magnetic particle products are produced to include a range of particle sizes. The fine particles are around 50 mm ( inch) in size, and are about three times smaller in diameter and more than 20 times lighter than the coarse particles ( mm or inch).

This make them more. Vibrating sample magnetometer (VSM) and Mössbauer spectroscopy are used to characterize the magnetic behaviour of fine magnetite particles obtained from (i) pure goethite and (ii) Ni-doped.

Abstract. The magnetic properties of γ-Fe 2 O 3 uniform particles prepared by two different methods; from α-Fe 2 O 3 precursors obtained by homogenous hydrolysis and directly, by spray pyrolysis of iron salt solutions, are analysed and related to their structural characteristics.

In the first case, the γ-Fe 2 O 3 particles, obtained by reduction-oxidation from the corresponding α-Fe 2 O 3. Abstract: The magnetic properties (such as the saturation magnetization, the exchange stiffness constant, the local magnetic anisotropy field, the ferromagnetic resonance linewidth) of fine Co-P particles with different phosphorus concentration and particle sizes have been studied.

The powders have been prepared by chemical reduction. The particle size was in the range of /spl mu/m. This book presents the special properties of low-dimensional magnetic systems i.e., film, multilayers, fine particles, nanostructured materials, and reflecting the recent researches.

All aspects of fine magnetic particles are covered in the 46 papers. The topics are remarkably interdisciplinary covering theory, materials preparation, structural characterization, optical and electrical properties, magnetic properties studied by different techniques and : Elsevier Science.

SERGEYProf.,worked for 24 years as Head of Nanomaterial Chemistry of ov Institute of General and Inorganic Chemistry of Russian Academy of Sciences in Moscow, Russia, where he was engaged in basic and applied research, mainly in synthesis and physical chemistry of molecular clusters and nanoparticles, especially magnetic nanoparticles.

Iron particles were prepared by a gas evaporation method in a nitrogen atmosphere. The particle size, shape, and magnetic properties were influenced by the nitrogen pressure.

Particles prepared by this method were relatively stable in air and were not seriously oxidized. The recoilless fraction is low for the oxide layer, so that it cannot be detected at room temperature by Mössbauer spectrum. Ultrafine particles of cobalt were prepared under argon by reduction of cobalt halide solutions in diglyme ether with metallic lithium and a naphthalene catalyst.

The fine particles had a particle diameter in the range 50– Å. The size was dependent on the reaction temperature. X‐ray diffraction showed crystalline particles of α‐Co and CoO. Magnetic Particle. Magnetic particles are the basis of the navigation system of living beings responsible for their behavior and orientation in relation to the Earth's magnetic field lines, including seasonal migrations over long distances [7,44].

Magnetic Properties of Spin Glass and Fine Particles Typical spin glasses such as Au-Fe or Cu-Mn exhibit following charac-teristic properties: (A) The low field ac susceptibility shows a sharp cusp at the freezing temperature T g (Fig.

(a): from Cannella and Mydosh, ).3) In large fields the cusp in the ac susceptibility of spin glasses. Introduction to Magnetic Materials, 2nd Edition covers the basics of magnetic quantities, magnetic devices, and materials used in practice.

While retaining much of the original, this revision now covers SQUID and alternating gradient magnetometers, magnetic force microscope, Kerr effect, amorphous alloys, rare-earth magnets, SI Units alongside cgs units, and other up-to-date topics. Book contents; Magnetic Properties of Fine Particles.

Magnetic Properties of Fine Particles. North-Holland Delta Series. Pages Polarized Neutron Reflection Measurements on Fine Particles. Author links open overlay panel R. Felici a D. Fiorani b J.L. Dormann c. Show more.

Outline. The magnetic and structural data were analyzed in terms of the theory of fine ferromagnetic particle. The existence of permanent magnet properties in fine particles of magnetic materials such as the ferrites was in accord with the theory of single domain particles.

More recently, attention has been focussing on the surface properties of solids with one or more limited dimensions, that is, on thin films, fine wires or filaments, and small particles.

Various physical parameters are of interest; if the systems are magnetic, that is, ferromagnetic, ferrimagnetic, or perhaps antiferromagnetic, additional Cited by: 6.

Fine particles of MnBi were prepared by the hydrogen plasma metal reaction method and their magnetic properties were investigated. The particle size of the as-prepared MnBi particles was 70­nm with a median diameter of nm. Heat treatment and ball milling with a dispersant improved the magnetic properties of the particles.

P.C. FANNIN, in Magnetic Properties of Fine Particles, Publisher Summary. A ferrofluid is a colloidal suspension of single domain particles dispersed in a carrier liquid and stabilized by a suitable organic surfactant.

The particles have radii ranging from approximately 2–10 nm. Fine particles offer an attractive avenue for the study of the magnetic properties of surfaces. The use of small particles instead of thin films has some advantages. Although several experimental techniques can be employed profitably, Mössbauer spectroscopy is emphasized.

The application of large magnetic fields has established that a non-collinear magnetic structure occurs in the surface.

We investigated the size dependent magnetic properties of Ni nanoparticles. We prepared four samples with average particle diameters of,and nm. This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.

The magnetic properties of fine metallic particles have been extensively investigated during the last decade [1, 2, 3]. The interest in this subject has both fundamental and technological aspects.

The magnetic and structural properties of Fe −x Cr x ultrafine particles with x=5–20 have been studied as a function of particle size. Particles with sizes in the range of – Å were prepared by gas evaporation under Ar atmosphere. The particles had a high coercivity with the smaller particles showing a stronger temperature dependence of coercivity than the larger particles.

The obtained fine particles are heated at a temperature between and °C for 2 h in air to get a single-phase Sr-Nd-Co M-type ferrite fine particles.

The most prominent magnetic properties. Heat conditions for synthesis of Fe16N2 tine particles and the resulting magnetic properties were investigated. Commercial ultra fine γ - Fe2O3 particles were first reduced under hydrogen gas at.

Ultrafine particles of cobalt were prepared under argon by reduction of cobalt halide solutions in diglyme ether with metallic lithium and a naphthalene catalyst. The fine particles had a particle diameter in the range Å. The size was dependent on the reaction temperature.

X-ray diffraction showed crystalline particles of α-Co and CoO. Because the ratio of the metal core to oxidized. We have prepared fine particles of Nd 2 Fe 14 B by spark erosion with various dielectric media. Yield, size, size distribution, structure, and magnetic properties are discussed.

The Nd 2 Fe 14 B particles were made by the shaker pot spark erosion method. Relaxation oscillators or a pulse generator were used to power the spark erosion. Biomedical applications like magnetic resonance imaging, magnetic cell separation, or magnetorelaxometry control the magnetic properties of the nanoparticles in magnetic fluids.

Furthermore, these applications also depend on the hydrodynamic size. Therefore, in many cases, only a small portion of particles contributes to the desired effect. The directions and magnitudes of the moments and the anisotropies are consistent with the presence of fine particles of α–Fe 2 O 3 on the kaolinite particles, having magnetic properties different considerably from macroscopic α–Fe 2 O 3 samples.

If iron particles are sprinkled on a cracked magnet, the particles will be attracted to and cluster not only at the poles at the ends of the magnet, but also at the poles at the edges of the crack. This cluster of particles is much easier to see than the actual crack and this is the basis for magnetic.

Fine particles of Fe-Co alloys, whose radii ranged about from 50 Å to Å, were prepared by evaporation in the atmosphere of argon gas at low pressure.

They arranged like a necklace. An assembly of these particles, whose average radius was Å, has a uniaxial magnetic anisotropy of 3~4 × 10 6 ergs/cm 3, which is mainly due to the shape.

Magnetic Properties of Magnetic Particles. Bangs does not routinely measure the iron oxide content or magnetic properties of our superparamagnetic particle offerings. However, representative data is available for a few particle lines.

Table 1 lists approximate percent magnetite values for Bangs’ magnetic. The motion of magnetic particles as they pass through a magnetic field is called magnetophoresis. Until now, not much was known about the factors influencing these particles and .Finely subdivided particles can exhibit special properties that differ from those of the bulk material.

An important example arises in ferrimagnets, where below a critical size, fine particles may contain only a single magnetic domain. This results in a large magnetic moment per unit volume, and a large magnetic anisotropy. The large.methods, i.e. liquid penetrant testing, magnetic particle testing, eddy current testing, radiographic testing and ultrasonic testing, and the second and revised is IAEA-TECDOC which includes additional methods of visual testing and leak testing.