			Home About us Contact

Soft Magnetic Materials (soft + magnetic_material)

Distribution by Scientific Domains

Physics and Astronomy	66%

Selected Abstracts

Soft magnetic materials for electrical engineering: state of the art and recent advances

EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, Issue 6 2005
F. Alves
Abstract This article gives a brief description of the essential characteristics and principal applications of amorphous, crystalline and nanostructured soft magnetic materials in electrical engineering. Copyright © 2005 John Wiley & Sons, Ltd. [source]

The effect of ball milling before and after calcination on the magnetic properties of HTR processed strontium hexaferrite powder

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 12 2004
S. A. Seyyed Ebrahimi
Abstract HTR process (Hydrogen Treatment and Recalcination) is a very new method in which strontium hexaferrite powder, as produced conventionally from strontium carbonate and iron oxide, has been heated in a hydrogen static atmosphere and then recalcined in air. During the hydrogenation stage, the hard magnetic powder is changed to a soft magnetic material with a low intrinsic coercivity and high saturation magnetisation. However, after recalcination, the saturation magnetisation returns to its initial value, but intrinsic coercivity increases to a value much greater than its amount before hydrogenation. The intrinsic coercivity which has been reported in this regard is about 391 kA/m. In this work this HTR processed powder has been milled in a ball mill and effect of milling before and after calcination on microstructure and particularly magnetic properties has been investigated. The results show a good enhancement in the intrinsic coercivity of material. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Influence of nanocrystalization on magnetoelastic Villari effect in Fe73.5Nb3Cu1Si13.5B9 alloy

CRYSTAL RESEARCH AND TECHNOLOGY, Issue 3-5 2003
R. Szewczyk
Abstract The results of an investigation of the influence of thermal annealing on the magnetoelastic properties of Fe73.5Nb3Cu1Si13.5B9 soft magnetic alloy in both amorphous and nanocrystalline state are presented. A new method developed was used to apply uniform compressive stresses to the investigated ring core made of the alloy. The compressive stresses produced by external mechanical forces were applied perpendicularly to the direction of the magnetizing field. Due to the uniform distribution of stresses in the core brittle nanocrystalline alloys may be tested for stresses up to 10 MPa. The results revealed, that process of nanocrystallisation causes significant increase in the stress sensitivity of the Fe73.5Nb3Cu1Si13.5B9 alloy. Moreover the influence of stresses caused by external forces is more significant at relatively low values of the magnetizing field suggesting that these nanocrystalline soft magnetic materials are stress sensitive in the range of technical operation of inductive components based on such materials. [source]

Soft magnetic materials for electrical engineering: state of the art and recent advances

Proceedings of the Second Seeheim Conference on Magnetism (SCM2004)

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 12 2004
Mohammad Ghafari
The Second Seeheim Conference on Magnetism took place in Seeheim, Germany, 27 June,1 July 2004. SCM2004 focused on latest developments in the field of magnetism of nano-structured materials, surfaces, interfaces and nanoparticles. These novel materials are connected with many aspects of magnetism such as hard and soft magnetic materials, magnetic interactions, magnetization processes, spin dependent transport properties, and applications. [source]

Preface: phys. stat. sol. (c) 1/12

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 12 2004
Chair person Mohammad Ghafari
The Second Seeheim Conference on Magnetism (SCM2004) was the second conference in the tri-annual series of this conference series on magnetism, organized under the auspices of Darmstadt University of Technology, Forschungszentrum Karlsruhe and Ulm University. SCM2004 was held from 27 June to 1 July 2004. The location was the Lufthansa Training Center in Seeheim located conveniently in central Germany and easily accessible by air, train and car. The purpose of the meeting was to provide an opportunity to present and discuss recent developments in the field of magnetic nanomaterials. SCM2004 was focused on the latest developments in specific areas of magnetism (nanostructured materials, surfaces, interfaces and nanoparticles) and covered fundamental aspects of magnetism as well as applications. The most recent results were presented in the form of invited and contributed talks as well as posters. The topical areas were: ,,hard and soft magnetic materials ,,magnetic interactions ,,magnetization processes ,,spin dependent transport properties ,,nanostructured materials ,,applications. The first conference of this series was held in Seeheim in 2001. The papers from the 2001 conference were published in a regular issue of physica status solidi (a) 189, Nos. 2, 3 (2002), and since their publication they have been downloaded from the Web more than 14,000 times. This cleary demonstrates both the interest in and the need for this conference series. Our second meeting was attended by participants from 36 countries. A total number of 271 papers correlating nanostructure and magnetic properties were selected for presentation. Throughout the meeting a total of 51 talks was given; the remaining 220 papers were selected for poster presentation. The conference proceeded in an informal and very friendly atmosphere among the researchers from various parts of the world. We are grateful to the Deutsche Forschungsgemeinschaft, Forschungszentrum Karlsruhe and Darmstadt University of Technology for their kind financial support. We are looking forward to welcoming again participants of SCM2004 at the Third Seeheim Conference on Magnetism, planned for 2007 in Seeheim. [source]