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Magnetic Properties of Fine Particles 1st Edition

Dec 02, 2012 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.

Magnetic Properties of Fine Particles ScienceDirect

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.

The Magnetic Properties of Fine Particles SpringerLink

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 biomagnetism.

Magnetic properties of fine-grained minerals ScienceDirect

Jan 01, 1992 Mössbauer spectroscopy is a sensitive indicator of the magnetic properties of fine-grained materials [2, 3]. Magnetic properties that are reflected in Mössbauer spectra are suitable for the identification, quantification, and characterization of naturally-occurring iron oxides. When these are formed at low temperatures or in the presence

Magnetic properties of fine NiO Particles ScienceDirect

Jan 01, 1978 Journal of Magnetism and Magnetic Materials 7 (1978) 63-65 North-Holland Publishing Company MAGNETIC PROPERTIES OF FINE Ni0 PARTICLES P. MOLLARD, M. BRIANE Laboratoire Louis Nl, CNRS, BP 166, 38042 Grenoble, France P. GERMI Laboratoire de Cristallographie, CNRS, BP 166, 38042 Grenoble, France and F. FIEVET Laboratoire chimie des matiaux divis, UniversitParis VII,

Magnetic properties of fine Ni particle coated with Pd

Magnetic properties of Ni fine particles (0.7 μm in diameter) coated with Pd (5-30 nm thick) were studied before and after hydrogenation. The system offers the possibility of studying hydrogenation under isovolumetric constraint, but this seems to produce little change in the saturation loading. The Pd shell appears to turn weakly ferromagnetic below about 20 K under high magnetic fields, but

Constraining the magnetic properties of ultrafine- and

Dec 24, 2018 The objective of this study is to examine magnetic properties of these two types of biogenic magnetites, in particular the traits of ultrafine-grained superparamagnetic magnetite. Applications of ultrafine- and fine-grained magnetite in rock

Magnetic properties of fine-grained doubly oriented Si

The magnetic properties of fine-grained doubly oriented Si steel sheets of 0.25-0.35 mm in thickness have been investigated. The doubly oriented Si steel sheets with grains of about 0.5 mm in diameter showed a large induction B 8 of about 1.9 T as well as a 35% smaller core loss than the previously studied coarse-grained doubly oriented materials.

Magnetism Magnetic properties of matter Britannica

Magnetic properties of matter. All matter exhibits magnetic properties when placed in an external magnetic field. Even substances like copper and aluminum that are not normally thought of as having magnetic properties are affected by the presence of a magnetic field such as that produced by either pole of a bar magnet.Depending on whether there is an attraction or repulsion by the pole of a

Magnetic Properties Of Solids Diamagnetic, Paramagnetic

The magnetic properties of a substance originate from the electrons present in the atoms or molecules. Every electron in an atom behaves like a small magnet. Electrons can also be referred to as small loops of current which retain their magnetic moment.

The Magnetic Properties of Fine Particles SpringerLink

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 biomagnetism.

‎Magnetic Properties of Fine Particles on Apple Books

Magnetic Properties of Fine Particles. J.L. Dormann. $94.99; $94.99; 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 more accurate and

Fine tuning in-sync the mechanical and magnetic properties

Therefore, we wonder whether it is possible to achieve good mechanical and magnetic properties of the FeCoNiAl 0.25 Mn 0.25 alloy through fine control of the microstructure. The objective of the current work is to deliberately explore the influence of annealing treatment on phase composition, microstructure and properties (mechanical and

(PDF) Magnetic properties of undoped Cu2O fine powders

Magnetic properties of undoped Cu2O fine powders with magnetic impurities and/or cation vacancies. April 2009; Magnetic properties of Ni <sub>3</sub> C nanoparticles, about 40 nm in diameter

Magnetic properties of Ni fine particles NASA/ADS

Magnetic properties of Ni fine particles, 3 nm in diameter, dispersed in an oil by a surface-active agent were examined by magnetization and Mössbauer measurements. From the magnetization measurements, the particles were found superparamagnetic at temperatures above about 40 K. The saturation magnetization at 4.2 K was reduced to 50% of that of bulk Ni.

Magnetic properties of fine-grained doubly oriented Si

The magnetic properties of fine-grained doubly oriented Si steel sheets of 0.25–0.35 mm in thickness have been investigated. The doubly oriented Si steel sheets with grains of about 0.5 mm in diameter showed a large induction B 8 of about 1.9 T as well as a 35% smaller core loss than the previously studied coarse-grained doubly oriented materials. . This decrease in core loss associated with

Constraining the magnetic properties of ultrafine- and

Dec 24, 2018 The objective of this study is to examine magnetic properties of these two types of biogenic magnetites, in particular the traits of ultrafine-grained superparamagnetic magnetite. Applications of ultrafine- and fine-grained magnetite in rock

Magnetic properties of fine crystalline Fe-P-C-Cu-X alloys

The crystallization process and magnetic properties of Fe-P-C-Cu-Ge-Si amorphous alloys were investigated. After annealing above the crystallization temperature, the bcc Fe particles, with nanoscale grain size, precipitated in the amorphous alloy for a wide P concentration range. The volume ratio of the bcc Fe phase to amorphous was about 30%.

Magnetic properties of fine-grained doubly oriented Si

The magnetic properties of fine-grained doubly oriented Si steel sheets of 0.25-0.35 mm in thickness have been investigated. The doubly oriented Si steel sheets with grains of about 0.5 mm in diameter showed a large induction B 8 of about 1.9 T as well as a 35% smaller core loss than the previously studied coarse-grained doubly oriented materials.

Magnetic properties and fine structure of amorphous Fe–Ni

Nov 24, 2016 The magnetic properties and Mossbauer spectra of amorphous 2NSR alloy samples are investigated after quenching and after tempering for different times at 520°C. After quenching, the alloy is inhomogeneous. Tempering of alloy samples below the crystallization temperature (540°C) raises the Curie temperature and the mean superfine field at the iron nuclei. Tempering leads to complex

Overview of Magnetism in Gemstones

Magnetic susceptibility is the scientific term for the degree to which any material is attracted to or repelled by a magnetic field. Nearly all references to magnetism found in gemological literature tell us that very few gemstones are magnetic, but this is misleading

(PDF) Magnetic properties of electroless fine Co-P particles

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

Magnetic properties of ultra-fine particles of Mn 0.5 Fe 0

A systematic study of the magnetic properties of ultra-fine particles of Mn0.5Fe0.5Fe2O4 spinel system has been undertaken. The effect of temperature on the magnetic properties of particles and the ferrofluid has been studied. Analysis of the data yields information on the anisotropy constant, particle size distribution and superparamagnetic behaviour.

Magnetic properties of fine SFMO particles

Magnetic properties of fine Sr 2 FeMoO 6 (SFMO) powders were systematically studied and superparamagnetism was observed. The SFMO samples were prepared using a citrate-gel method and were characterized by X-ray diffraction (XRD), ferromagnetic resonance (FMR) and Mössbauer spectroscopy. The XRD measurements showed that the powders are nearly pure and the Rietveld

Magnetic Properties as a Proxy for Predicting Fine

The inclusion of magnetic variables significantly improved the prediction results for most heavy metals. Predictions based on models that included the magnetic properties of the metals Al, Fe, Mn, Ni, and Ti were promising, with R values of >0.8 in both the training and the

(PDF) Magnetic properties of electroless fine Co-P particles

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

Magnetic properties of fine-grained doubly oriented Si

The magnetic properties of fine-grained doubly oriented Si steel sheets of 0.25–0.35 mm in thickness have been investigated. The doubly oriented Si steel sheets with grains of about 0.5 mm in diameter showed a large induction B 8 of about 1.9 T as well as a 35% smaller core loss than the previously studied coarse-grained doubly oriented materials. . This decrease in core loss associated with

Magnetic properties of fine cobalt particles prepared by

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 50–1200 Å. The size was dependent on the reaction temperature. X‐ray diffraction showed crystalline particles of α‐Co and CoO.

Magnetic properties of fine crystalline Fe-P-C-Cu-X alloys

The crystallization process and magnetic properties of Fe-P-C-Cu-Ge-Si amorphous alloys were investigated. After annealing above the crystallization temperature, the bcc Fe particles, with nanoscale grain size, precipitated in the amorphous alloy for a wide P concentration range. The volume ratio of the bcc Fe phase to amorphous was about 30%.

Magnetic properties of fine-grained doubly oriented Si

The magnetic properties of fine-grained doubly oriented Si steel sheets of 0.25-0.35 mm in thickness have been investigated. The doubly oriented Si steel sheets with grains of about 0.5 mm in diameter showed a large induction B 8 of about 1.9 T as well as a 35% smaller core loss than the previously studied coarse-grained doubly oriented materials.

Magnetic properties of ultra-fine particles of Mn 0.5 Fe 0

A systematic study of the magnetic properties of ultra-fine particles of Mn0.5Fe0.5Fe2O4 spinel system has been undertaken. The effect of temperature on the magnetic properties of particles and the ferrofluid has been studied. Analysis of the data yields information on the anisotropy constant, particle size distribution and superparamagnetic behaviour.

Composition and magnetic properties of fine iron powders

4. L. Yu. Ivanova, A. K. Averinov, S. A. Kisheev, and M. G. Osmolovskii, “Structure of electrolytic iron powder for magnetic recording carriers,” in: Fine Powders

Magnetic properties and fine structure of amorphous Fe–Ni

Nov 24, 2016 The magnetic properties and Mossbauer spectra of amorphous 2NSR alloy samples are investigated after quenching and after tempering for different times at 520°C. After quenching, the alloy is inhomogeneous. Tempering of alloy samples below the crystallization temperature (540°C) raises the Curie temperature and the mean superfine field at the iron nuclei. Tempering leads to complex

Overview of Magnetism in Gemstones

Magnetic susceptibility is the scientific term for the degree to which any material is attracted to or repelled by a magnetic field. Nearly all references to magnetism found in gemological literature tell us that very few gemstones are magnetic, but this is misleading

Magnetic properties of undoped Cu2O fine powders with

Mar 09, 2009 The magnetic properties of this material with and without magnetic doping are therefore of fundamental interest to the spin polarized transport behaviour. For the magnetic properties of doped samples, observations of room temperature ferromagnetism in the Al and Co co-doped Cu 2 O film and in the Mn-doped Cu 2 O films [3, 4] have been reported.

Magnetic properties of fine particles : proceedings of the

Apr 08, 1991 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 4-8, 1991. [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

Understanding fine magnetic particle systems through use

1 Introduction. First‐order reversal curve (FORC) diagrams [Pike et al., 1999; Roberts et al., 2000] provide important insights into the magnetic properties of the rock‐forming minerals responsible for diverse magnetic signals in rock magnetism, environmental magnetism, and paleomagnetism.FORC diagrams have, therefore, become a popular tool in these research fields.

Magnetic properties of electroless fine Co-P particles

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 0.1-3 /spl mu/m.