Consequently, owing to a large fraction of particles acquiring near single domain configuration under thefield assisted milling condition, thecoercivityderived from these particles are as high as 6500 Oe than that of particles obtained without theaidofexternal magnetic fieldwhich is around 3850 Oe.

A magnetic field-assisted ball milling has been employed for the preparation ofSmCo5+10 wt% Fe nanocomposite powdersin the presence of oleic acid as surfactant.

High-frequencyelectromagnetic-field-assisted stirring ball millingdevice. Themilling ballswere placed in themillingtank, followed by the addition of alcohol which was added until two-thirds of the tank was filled. 10 g of raw materials were placed inside, andball millingcommenced.

Anisotropic Sm 2 Co 17 flakes with high aspect ratio were prepared by magnetic field assisted high energy ball milling in the presence of heptane andoleic acid…

Sep 12, 2002· Figure 1: Schematic illustrations of magneto-ball millingand electric-discharge-assistedmills. a, Conventionalmillingunder externalmagnetic field. External magnets controlballmotion ...

Structural andmagneticcharacterizations show the alignment of the c-axis of the SmCo ₅ grains upon themagnetic-field-assisted ball milling, while the grain size was controlled under ...

The alloy of TbFe 2 was studied byball millingwith and without the presence of externalmagnetic field. While the structure and powder morphology of the alloy were investigated using scanning electron microscope and X-ray diffraction, the magnetization was investigated using vibrating sample and superconducting quantum interference device magnetometers.

Anisotropic bonded magnets are fabricated by surfactant-assisted ball millingin amagnetic fieldandmagnetic fieldalignment of the milled chip-like nanoparticles of the Sm–Co and Nd–Fe–B materials. It is found that the application ofmagnetic fieldsduring theball millingstrengthens the anisotropy of the chips and therefore improves ...

Abstract Amagnetic field-assisted ball millinghas been employed for the preparation of SmCo 5 + 10 wt% Fe nanocomposite powders in the presence of oleic acid as surfactant.Millingexperiments were also carried out without using surfactant and the nanocomposite powders so obtained, with and without surfactant, were investigated for their structural andmagneticproperties using SEM, XRD, VSM ...

SmCo 5 /Fe nanocompositemagneticpowders processed bymagnetic field-assisted ball millingwith and without surfactant

Magnetically hard Sm2(Co0.8Fe0.2)17 and SmCo5 nanoparticles have been produced by usingsurfactant-assistedlow- and high-energyball millingtechniques. Surfactants prevent the rewelding of the crashed particles during themillingprocess. Heptane was used as themillingmedium and oleic acid as the surfactant. High-energyball millingexperiments took place in amillingvial with carbon ...

HardmagneticSm2Co17 nanoflakes with thickness of 20–100 nm were obtained bymillingin heptane and oleic acid under amagnetic fieldof 1. 5 T for 0.5–20 h.

Apr 15, 2010· Structural andmagneticcharacterizations show the alignment of the c-axis of the SmCo5 grains upon themagnetic-field-assisted ball milling, while the grain size was controlled under 15 nm. The formation of the texture may be attributed to the effect ofmagnetic fieldson the grain orientation during the cold welding process duringball...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Anisotropic bonded magnets fabricated via surfactant-assisted ball millingandmagnetic-fieldprocessing This article has been downloaded from IOPscience. Please scroll down to see the full text article.

In this articles, a novel method of the solid particle (NaCl) and surfactant co-assisted ball milling(SPSABM) are used for preparing the ultrathin rare-earth permanentmagnetic(SmCo 5) nanoflakes with narrow size distribution and high coercivity. The results indicate that it is a fine method for decreasing the thickness of nanoflakes but ...

The system relies on a pounding process in which small magnets in an oscillatingmagnetic fieldare fluidized to rapidly force the coating material onto the larger particles. Likewise, the magnets will distribute a small amount of liquid, such as an organosilane, evenly onto core particles and robustly apply them to the surface.

title = "Anisotropic Sm-(Co,Fe) nanoparticles by surfactant-assisted ball milling", abstract = "Magnetically hard Sm2 (Co0.8 Fe0.2) 17 and SmCo5 nanoparticles have been produced by using surfactant-assistedlow- and high-energyball millingtechniques.