نتایج جستجو برای: halbach shaped magnets

تعداد نتایج: 80354  

2006
Seiji HAYASHI Ryoichi HIROSE

We have been developing superconducting wires and magnets for over 40 years and decided to focus on the NMR field in the early 1990s. Japan Superconductor Technology Inc., established in 2002, has successfully applied the R&D achievement of Kobe Steel to their production of superconducting wires and magnets. This article describes developments in superconducting wires and magnets with focus on ...

2011
Anne-Laure Gassner Jacques Morandini Jacques Josserand Hubert H. Girault

This paper introduces the concept of ring magnets for magnetic beads (MBs) trapping in a capillary. Such magnets enable an easy insertion of a capillary simply like a pearl on a string. With this system, high magnetic forces are obtained thanks to the proximity between the magnet and the capillary, giving the opportunity to work at higher flow rates than with classical setups using two magnets ...

2013
Daniel Alberto Tsin Guillermo Dominguez Fausto Davila Juan Manuel Alonso-Rivera Brad Safro Andrea Tinelli

INTRODUCTION A novel technique was used to remove a large liver cyst via culdolaparoscopy. CASE DESCRIPTION We used laparoscopic instruments, a gastroscope, a laparoscopic rein, and magnets. The magnets consist of an external magnet and a specially modified tethered neodymium internal magnet, safe for use in transvaginal endoscopic surgery. DISCUSSION These technologies offer some advantage...

2016
Wataru Koshibae Naoto Nagaosa

Skyrmions and antiskyrmions are swirling topological magnetic textures realized as emergent particles in magnets. A skyrmion is stabilized by the Dzyaloshinskii-Moriya interaction in chiral magnets and/or a dipolar interaction in thin film magnets, which prefer the twist of the magnetic moments. Here we show by a numerical simulation of the Landau-Lifshitz-Gilbert equation that pairs of skyrmio...

1997
P. Tenenbaum D. Burke R. Helm J. Irwin P. Raimondi K. Oide

In order to optimize tunability and backgrounds in linear collider final focus systems, it is necessary to align strong quadrupole and sextupole magnets with beam-based measurements. Algorithms for alignment have been used successfully on the Final Focus Test Beam (FFTB) beamline at SLAC. Quadrupole magnets were aligned using a shunt technique, with resolutions from 50 microns down to 700 nanom...

2012
Narayan Poudyal Ping Liu

This paper reviews recent developments in research in nanostructured permanent magnets (hard magnetic materials) with emphasis on bottom-up approaches to fabrication of hard/soft nanocomposite bulk magnets. Theoretical and experimental findings on the effects of soft phase and interface conditions on interphase exchange interactions are given. Synthesis techniques for hard magnetic nanoparticle...

2017
J.M.D. Coey Ralph Skomski

The outlook for improving the energy product of permanent magnets beyond the theoretical limit of 516kJ/m3 for Nd,Fe,,B is discussed. Most promising are nanostructured two-phase magnets consisting of an aligned hard-magnetic skeleton phase possessing exceptionally high uniaxial anisotropy and a soft-magnetic phase which assures a high magnetization. Brown’s paradox is discussed for inhomogeneou...

2011
R. König

1. Matter and Techniques at Low Temperatures 1.1.Introduction 1.2.Historical Remarks on the Development of Low Temperature Physics and Techniques 1.3.Combining Dilution Refrigeration with Adiabatic Nuclear Demagnetization: The Way to Microkelvin Physics 1.4.Macroscopic Quantum Phenomena: Superconductivity and Superfluidity 1.4.1.Superconductivity 1.4.2.Superfluidity 2. Magnetic Fields and Magne...

2017
Yen-Ju Chen Yen-I Lee Wen-Cheng Chang Po-Jen Hsiao Jr-Shian You Chun-Chieh Wang Chia-Min Wei

Hot deformation of Nd-Fe-B magnets has been studied for more than three decades. With a good combination of forming processing parameters, the remanence and (BH)max values of Nd-Fe-B magnets could be greatly increased due to the formation of anisotropic microstructures during hot deformation. In this work, a methodology is proposed for visualizing the material flow in hot-deformed Nd-Fe-B magne...

2002
Shin-ichi Ohkoshi Kazuhito Hashimoto

The Electrochemical Society Interface • Fall 2002 olecular magnetism has been one of the active areas in molecular chemistry for the last 15 years.1-6 The advantages of molecule-based magnets compared to classical metal and metal oxide ones are that the magnets can be obtained through a selection of proper spin sources (e.g., transition metal ions, organic radicals) and coordinating ligands. On...

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