The effect of magnetic interactions on low temperature saturation remanence in fine magnetic particle systems

2000 ◽  
Vol 88 (2) ◽  
pp. 967-974 ◽  
Author(s):  
Christopher R. Pike ◽  
Andrew P. Roberts ◽  
Kenneth L. Verosub
Keyword(s):  
Low Temperature ◽  
Magnetic Particle ◽  
Particle Systems ◽  
Magnetic Interactions ◽  
Saturation Remanence

scholarly journals Modification of low temperature magnetic interactions in Dy1−xEuxMnO3

RSC Advances ◽  
2018 ◽  
Vol 8 (24) ◽  
pp. 13537-13545 ◽  
Author(s):  
K. Yadagiri ◽  
R. Nithya ◽  
Shilpam Sharma ◽  
A. T. Satya
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Solid Solutions ◽  
Magnetic Interactions ◽  
Rare Earth Ion ◽  
Ceramic Method

Solid solutions of rare earth ion (Eu3+) substituted DyMnO3, Dy1−xEuxMnO3 (x = 0.0–1.0) have been synthesized by ceramic method.

Development of Planar Microfluidic Systems Using Conventional and Low Temperature Assembling Schemes for Components

1999 ◽  
Author(s):  
Nihat Okulan ◽  
Shekhar Bhansali ◽  
Arum Han ◽  
Saman Dharmatilleke ◽  
Jin-Woo Choi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electrochemical Detection ◽  
Biochemical Analysis ◽  
Magnetic Particle ◽  
Lab On A Chip ◽  
Microfluidic System ◽  
Microfluidic Systems ◽  
Detection Techniques

Abstract This center is currently working on the development of a remotely accessible generic microfluidic system (“lab on a chip”) for biological and biochemical analysis, based on electrochemical detection techniques. Modular microfluidic components, including micro reservoirs, microvalves, micropumps, filterless magnetic particle separators, biosensors and flowsensors, were fabricated and tested, and integrated on a system motherboard. Other air-to-liquid measurand concentrators and integrated sieve/filters are being explored in related efforts. The fabrication of these microfluidic components and the utilization of wax for low temperature assembly and even bonding is discussed.

Brownian Dynamics Simulations of Colloidal Dispersion Composed of Ferromagnetic Spherocylinder Particles in a Simple Shear Flow (For the Case of an Applied Magnetic Field Normal to the Shear Plane)

2009 ◽  
Author(s):  
Ryo Hayasaka ◽  
Yasuhiro Sakuda ◽  
Akira Satoh
Keyword(s):  
Magnetic Field ◽  
Brownian Dynamics ◽  
Magnetic Particle ◽  
Colloidal Dispersion ◽  
Magnetic Interactions ◽  
Simple Shear Flow ◽  
Particle Interactions ◽  
Dynamics Simulations ◽  
Brownian Dynamics Simulations ◽  
The Magnetic Field

We have investigated aggregate structures and rheological properties of a colloidal dispersion composed of ferromagnetic spherocylinder particles with a magnetic moment along the particle axis direction, by means of Brownian dynamics simulations. In concrete, we have attempted to clarify the influences of the flow field, magnetic field strength, magnetic interactions between particles and volumetric fraction of particles. In order to discuss quantitatively the internal structures of clusters, we have concentrated our attention on the radial distribution and orientational distribution functions. The present results are compared with those of the theoretical analysis for dilute dispersions and also non-dilute dispersions; the results for the latter were obtained by means of the mean-field approximation, which magnetic particle-particle interactions can be taken into account. Some important results are summarized as follows. For the case of the magnetic field strength and magnetic interactions between particles are more dominant than the viscous forces due to a simple shear flow, chain-like like clusters are formed along the magnetic field direction, although they are slightly tilted to the flow direction. When magnetic particle-particle interactions become over a certain value, such cluster formation leads to a significant increase in the viscosity of the dispersion.

scholarly journals Reviewing Magnetic Particle Preparation: Exploring the Viability in Biosensing

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4596
Author(s):  
Daniel Kappe ◽  
Laila Bondzio ◽  
Joris Swager ◽  
Andreas Becker ◽  
Björn Büker ◽  
...  
Keyword(s):  
Magnetic Particles ◽  
Magnetic Particle ◽  
Size Range ◽  
Particle System ◽  
Microfluidic Channel ◽  
Review Article ◽  
Particle Systems ◽  
Heusler Compound ◽  
Particle Preparation ◽  
New Applications

In this review article, we conceptually investigated the requirements of magnetic nanoparticles for their application in biosensing and related them to example systems of our thin-film portfolio. Analyzing intrinsic magnetic properties of different magnetic phases, the size range of the magnetic particles was determined, which is of potential interest for biosensor technology. Different e-beam lithography strategies are utilized to identify possible ways to realize small magnetic particles targeting this size range. Three different particle systems from 500 μm to 50 nm are produced for this purpose, aiming at tunable, vertically magnetized synthetic antiferromagnets, martensitic transformation in a single elliptical, disc-shaped Heusler Ni50Mn32.5Ga17.5 particle and nanocylinders of Co2MnSi-Heusler compound. Perspectively, new applications for these particle systems in combination with microfluidics are addressed. Using the concept of a magnetic on–off ratchet, the most suitable particle system of these three materials is validated with respect to magnetically-driven transport in a microfluidic channel. In addition, options are also discussed for improving the magnetic ratchet for larger particles.

Low-temperature phase and magnetic interactions in FCC Fe-Cr-Ni alloys

1989 ◽  
Vol 80 (2-3) ◽  
pp. 329-338 ◽  
Author(s):  
Carmen Almasan ◽  
T. Datta ◽  
R.D. Edge ◽  
E.R. Jones ◽  
J.W. Cable ◽  
...  
Keyword(s):  
Low Temperature ◽  
Magnetic Interactions ◽  
Temperature Phase ◽  
Ni Alloys ◽  
Low Temperature Phase
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