Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (3)

Search Parameters:
Keywords = nanoparticular GMR-effect

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
7323 KiB  
Review
Giant Magnetoresistance: Basic Concepts, Microstructure, Magnetic Interactions and Applications
by Inga Ennen, Daniel Kappe, Thomas Rempel, Claudia Glenske and Andreas Hütten
Sensors 2016, 16(6), 904; https://doi.org/10.3390/s16060904 - 17 Jun 2016
Cited by 136 | Viewed by 20666
Abstract
The giant magnetoresistance (GMR) effect is a very basic phenomenon that occurs in magnetic materials ranging from nanoparticles over multilayered thin films to permanent magnets. In this contribution, we first focus on the links between effect characteristic and underlying microstructure. Thereafter, we discuss [...] Read more.
The giant magnetoresistance (GMR) effect is a very basic phenomenon that occurs in magnetic materials ranging from nanoparticles over multilayered thin films to permanent magnets. In this contribution, we first focus on the links between effect characteristic and underlying microstructure. Thereafter, we discuss design criteria for GMR-sensor applications covering automotive, biosensors as well as nanoparticular sensors. Full article
(This article belongs to the Special Issue Giant Magnetoresistive Sensors)
Show Figures

Figure 1

1598 KiB  
Article
Hybrid Molecular and Spin Dynamics Simulations for Ensembles of Magnetic Nanoparticles for Magnetoresistive Systems
by Lisa Teich and Christian Schröder
Sensors 2015, 15(11), 28826-28841; https://doi.org/10.3390/s151128826 - 13 Nov 2015
Cited by 1 | Viewed by 6183
Abstract
The development of magnetoresistive sensors based on magnetic nanoparticles which are immersed in conductive gel matrices requires detailed information about the corresponding magnetoresistive properties in order to obtain optimal sensor sensitivities. Here, crucial parameters are the particle concentration, the viscosity of the gel [...] Read more.
The development of magnetoresistive sensors based on magnetic nanoparticles which are immersed in conductive gel matrices requires detailed information about the corresponding magnetoresistive properties in order to obtain optimal sensor sensitivities. Here, crucial parameters are the particle concentration, the viscosity of the gel matrix and the particle structure. Experimentally, it is not possible to obtain detailed information about the magnetic microstructure, i.e., orientations of the magnetic moments of the particles that define the magnetoresistive properties, however, by using numerical simulations one can study the magnetic microstructure theoretically, although this requires performing classical spin dynamics and molecular dynamics simulations simultaneously. Here, we present such an approach which allows us to calculate the orientation and the trajectory of every single magnetic nanoparticle. This enables us to study not only the static magnetic microstructure, but also the dynamics of the structuring process in the gel matrix itself. With our hybrid approach, arbitrary sensor configurations can be investigated and their magnetoresistive properties can be optimized. Full article
(This article belongs to the Special Issue Magnetic Sensor Device-Part 1)
Show Figures

Figure 1

2943 KiB  
Article
Modeling of Nanoparticular Magnetoresistive Systems and the Impact on Molecular Recognition
by Lisa Teich, Daniel Kappe, Thomas Rempel, Judith Meyer, Christian Schröder and Andreas Hütten
Sensors 2015, 15(4), 9251-9264; https://doi.org/10.3390/s150409251 - 20 Apr 2015
Cited by 6 | Viewed by 7322
Abstract
The formation of magnetic bead or nanoparticle superstructures due to magnetic dipole dipole interactions can be used as configurable matter in order to realize low-cost magnetoresistive sensors with very high GMR-effect amplitudes. Experimentally, this can be realized by immersing magnetic beads or nanoparticles [...] Read more.
The formation of magnetic bead or nanoparticle superstructures due to magnetic dipole dipole interactions can be used as configurable matter in order to realize low-cost magnetoresistive sensors with very high GMR-effect amplitudes. Experimentally, this can be realized by immersing magnetic beads or nanoparticles in conductive liquid gels and rearranging them by applying suitable external magnetic fields. After gelatinization of the gel matrix the bead or nanoparticle positions are fixed and the resulting system can be used as a magnetoresistive sensor. In order to optimize such sensor structures we have developed a simulation tool chain that allows us not only to study the structuring process in the liquid state but also to rigorously calculate the magnetoresistive characteristic curves for arbitrary nanoparticle arrangements. As an application, we discuss the role of magnetoresistive sensors in finding answers to molecular recognition. Full article
(This article belongs to the Special Issue Nanoparticle-Based Biosensors)
Show Figures

Figure 1

Back to TopTop