Micro-Hall-magnetometry

Rahm, M.; Biberger, J.; Weiss, Dieter

doi:10.1016/b978-044450993-2/50009-4

Cited by 3 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The principle of this measurement is shown in Figure 8 a. The sensitive probe volume is sheet like with a thickness of 2 nm (two dimensional electron gas within the semiconductor heterostructure of the probe) [ 90 , 91 ] with a spatial extent of 1 µm in the

- and

-direction [ 50 ]. Due to the design of the semiconductor heterostructure, the sensing volume is located at a depth of 150 nm from the lower side of the Hall probe [ 50 ].…”

Section: Quantification Of Stray Fields Above Patterned Exchange-bmentioning

confidence: 99%

“…For a quantitative determination of the measured

-component of the MFL the Hall probe measurement result must be corrected for two effects: (1) the tilt of the probe by 2° and (2) the averaging over the lateral extension of the probe including the electronic transport regime at which the Hall probe operates, i.e. , either ballistic or diffusive [ 91 , 92 , 93 ]. The first correction is straightforward by dividing by cos(2°) and is therefore almost negligible.…”

Section: Quantification Of Stray Fields Above Patterned Exchange-bmentioning

confidence: 99%

See 1 more Smart Citation

Manipulation of Superparamagnetic Beads on Patterned Exchange-Bias Layer Systems for Biosensing Applications

Ehresmann

Koch

Holzinger

2015

Sensors

View full text Add to dashboard Cite

A technology platform based on a remotely controlled and stepwise transport of an array arrangement of superparamagnetic beads (SPB) for efficient molecular uptake, delivery and accumulation in the context of highly specific and sensitive analyte molecule detection for the application in lab-on-a-chip devices is presented. The near-surface transport of SPBs is realized via the dynamic transformation of the SPBs’ magnetic potential energy landscape above a magnetically stripe patterned Exchange-Bias (EB) thin film layer systems due to the application of sub-mT external magnetic field pulses. In this concept, the SPB velocity is dramatically influenced by the magnitude and gradient of the magnetic field landscape (MFL) above the magnetically stripe patterned EB substrate, the SPB to substrate distance, the magnetic properties of both the SPBs and the EB layer system, respectively, as well as by the properties of the external magnetic field pulses and the surrounding fluid. The focus of this review is laid on the specific MFL design in EB layer systems via light-ion bombardment induced magnetic patterning (IBMP). A numerical approach is introduced for the theoretical description of the MFL in comparison to experimental characterization via scanning Hall probe microscopy. The SPB transport mechanism will be outlined in terms of the dynamic interplay between the EB substrate’s MFL and the pulse scheme of the external magnetic field.

show abstract

- and

-direction [ 50 ]. Due to the design of the semiconductor heterostructure, the sensing volume is located at a depth of 150 nm from the lower side of the Hall probe [ 50 ].…”

Section: Quantification Of Stray Fields Above Patterned Exchange-bmentioning

confidence: 99%

“…For a quantitative determination of the measured

Section: Quantification Of Stray Fields Above Patterned Exchange-bmentioning

confidence: 99%

Manipulation of Superparamagnetic Beads on Patterned Exchange-Bias Layer Systems for Biosensing Applications

Ehresmann

Koch

Holzinger

2015

Sensors

View full text Add to dashboard Cite

show abstract

“…In micro-Hall magnetometry [11] where magnetic nanodisks are placed on top of Greek cross-shaped Hall plate sensors, vortex motion is detected from their strayfield sensed by Hall voltage measurements, whereas in nanoscale magnetometry, vortex motion is detected from its stray-field by single-spin detection with diamond nitrogen vacancy sensor [12].…”

Section: Vortex Hysteresis Loopmentioning

confidence: 99%

All-electrical magnetic vortex array sensing

Tannous

Gieraltowski

2016

EPL

View full text Add to dashboard Cite

Vortex sensing magnetometers based on arrays of soft magnetic dots are good candidates for high-resolution and accurate spatial magnetic-field estimation. When the arrays are laid out along different spatial directions they can perform tensor gradiometry allowing the measurement of field components and their spatial derivatives as a function of orientation. Detection is based on using spin-polarized currents to counteract vortex displacements or to excite vortex oscillation modes triggered by magnetic-field application. Sensor linearization, field detection range and conditions to obtain large sensitivity electronic compatibility and scalability are discussed.

show abstract

Magnetic Properties: From Traditional to Spintronic

Tannous

Gieraltowski

2017

Springer Handbook of Electronic and Photonic Materials

View full text Add to dashboard Cite

Micro-Hall-magnetometry

Cited by 3 publications

References 56 publications

Manipulation of Superparamagnetic Beads on Patterned Exchange-Bias Layer Systems for Biosensing Applications

Manipulation of Superparamagnetic Beads on Patterned Exchange-Bias Layer Systems for Biosensing Applications

All-electrical magnetic vortex array sensing

Magnetic Properties: From Traditional to Spintronic

Contact Info

Product

Resources

About