Remote two-dimensional imaging of giant magnetoresistance with spatial resolution

2006 ◽  
Vol 88 (2) ◽  
pp. 022502 ◽  
Author(s):  
S. M. Stirk ◽  
S. M. Thompson ◽  
R. T. Mennicke ◽  
J. A. D. Matthew ◽  
A. F. Lee
Keyword(s):  
Spatial Resolution ◽  
Giant Magnetoresistance ◽  
Two Dimensional

Remote two-dimensional imaging of giant magnetoresistance in a synthetic spin valve with spatial resolution

2006 ◽  
Vol 99 (8) ◽  
pp. 08T101 ◽  
Author(s):  
S. M. Stirk ◽  
A. J. Vick ◽  
S. M. Thompson ◽  
J. A. D. Matthew ◽  
A. F. Lee
Keyword(s):  
Spatial Resolution ◽  
Giant Magnetoresistance ◽  
Spin Valve ◽  
Two Dimensional

Remote two-dimensional imaging of giant magnetoresistance with spatial resolution of 30μm

2007 ◽  
Vol 316 (2) ◽  
pp. e953-e956 ◽  
Author(s):  
S.M. Stirk ◽  
S.M. Thompson ◽  
J.A.D. Matthew ◽  
A.F. Lee
Keyword(s):  
Spatial Resolution ◽  
Giant Magnetoresistance ◽  
Two Dimensional

Antiferromagnetic Short Range Order in a Two-Dimensional Manganite Exhibiting Giant Magnetoresistance

1997 ◽  
Vol 78 (16) ◽  
pp. 3197-3200 ◽  
Author(s):  
T. G. Perring ◽  
G. Aeppli ◽  
Y. Moritomo ◽  
Y. Tokura
Keyword(s):  
Short Range ◽  
Giant Magnetoresistance ◽  
Short Range Order ◽  
Range Order ◽  
Two Dimensional

scholarly journals Magnetic domains and domain wall pinning in two-dimensional ferromagnets revealed by nanoscale imaging

2020 ◽  
Author(s):  
Qi-Chao Sun ◽  
Tiancheng Song ◽  
Eric Anderson ◽  
Tetyana Shalomayeva ◽  
Johannes Förster ◽  
...  
Keyword(s):  
Domain Structure ◽  
Spatial Resolution ◽  
Magnetic Domain ◽  
Magnetic Domain Structure ◽  
Nitrogen Vacancy ◽  
Two Dimensional ◽  
Magnetic Domains ◽  
Pinning Effect ◽  
Nitrogen Vacancy Center ◽  
Vacancy Center

Abstract Magnetic-domain structure and dynamics play an important role in understanding and controlling the magnetic properties of two-dimensional magnets, which are of interest to both fundamental studies and applications. However, the probe methods based on the spin-dependent optical permeability and electrical conductivity can neither provide quantitative information of the magnetization nor achieve nanoscale spatial resolution. These capabilities are essential to image and understand the rich properties of magnetic domains. Here, we employ cryogenic scanning magnetometry using a single-electron spin of a nitrogen-vacancy center in a diamond probe to unambiguously prove the existence of magnetic domains and study their dynamics in atomically thin CrBr3. The high spatial resolution of this technique enables imaging of magnetic domains and allows to resolve domain walls pinned by defects. By controlling the magnetic domain evolution as a function of magnetic field, we find that the pinning effect is a dominant coercivity mechanism with a saturation magnetization of about 26μB/nm2 for bilayer CrBr3. The magnetic-domain structure and pinning-effect dominated domain reversal process are verified by micromagnetic simulation. Our work highlights scanning nitrogen-vacancy center magnetometry as a quantitative probe to explore two-dimensional magnetism at the nanoscale.

scholarly journals High Spatial Resolution Neutron Transmission Imaging Using a Superconducting Two-Dimensional Detector

2021 ◽  
pp. 1-1
Author(s):  
Hiroaki Shishido ◽  
Kazuma Nishimura ◽  
The Dang Vu ◽  
Kazuya Aizawa ◽  
Kenji M Kojima ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Two Dimensional ◽  
Neutron Transmission ◽  
Transmission Imaging

Giant magnetoresistance response by the π–d interaction in an axially ligated phthalocyanine conductor with two-dimensional π–π stacking structure

2010 ◽  
Vol 20 (21) ◽  
pp. 4432 ◽  
Author(s):  
Manabu Ishikawa ◽  
Takehiro Asari ◽  
Masaki Matsuda ◽  
Hiroyuki Tajima ◽  
Noriaki Hanasaki ◽  
...  
Keyword(s):  
Giant Magnetoresistance ◽  
Two Dimensional ◽  
Π Stacking ◽  
Stacking Structure

Studying 2D Materials with Advanced Raman Spectroscopy: CARS, SRS and TERS

2021 ◽  
Author(s):  
L Malard ◽  
Lucas Lafetá ◽  
Renan Cunha ◽  
Rafael Nadas ◽  
Andreij Gadelha ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Spatial Resolution ◽  
2D Materials ◽  
2D Systems ◽  
Weak Signal ◽  
Two Dimensional ◽  
Signal Response

Raman spectroscopy is established as a valuable tool to study and characterize two-dimensional (2D) systems, but it exhibits two drawbacks: a relatively weak signal response and a limited spatial resolution....

TH-C-19A-12: Two-Dimensional High Spatial-Resolution Dosimeter Using Europium Doped Potassium Chloride

2014 ◽  
Vol 41 (6Part32) ◽  
pp. 549-550
Author(s):  
H Li ◽  
J Driewer ◽  
Z Han ◽  
D Low ◽  
D Yang ◽  
...  
Keyword(s):  
Potassium Chloride ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Two Dimensional

Absolute Magnetometry Using Electron Holography: Magnetic Superlattices and Small Particles

MRS Bulletin ◽  
1995 ◽  
Vol 20 (10) ◽  
pp. 45-48 ◽  
Author(s):  
Marian Mankos ◽  
J.M. Cowley ◽  
M.R. Scheinfein
Keyword(s):  
Electromagnetic Fields ◽  
Spatial Resolution ◽  
Giant Magnetoresistance ◽  
High Spatial Resolution ◽  
Imaging Techniques ◽  
Absolute Calibration ◽  
Magnetization Distribution ◽  
Electron Holography ◽  
Near Surface ◽  
Magnetic Microstructure

Synthesized magnetic structures are of interest due to their unique and unusual properties, which are governed by their micromagnetic structure. For example, giant-magnetoresistance (GMR) multilayer structures composed of magnetic layers separated by nonmagnetic spacers, and granular GMR films composed of magnetic and nonmagnetic metals exhibit phenomena whose interpretation requires knowledge of both the physical and micromagnetic structure at nanometer-length scales. Techniques for magnetic-microstructure imaging are based on the interaction between a probe and either the magnetic microstructure itself (magnetization) or a physical quantity related to the magnetization distribution (e.g., magnetostriction, magnetic induction). Transmission methods are sensitive to bulk magnetic microstructure averaged along the direction of the incident probe; surface structure is lost. Reflection techniques interact with the near-surface region and no information is obtained about the bulk structure aside from those properties that can be inferred from appropriate boundary conditions.Electron-optical methods represent the widest class of high-spatial-resolution, magnetic-domain imaging techniques. The most advanced techniques provide the highest contrast, sensitivity, and point resolution (1 nm). Electron holography offers quantitative micromagnetic information at high spatial resolution, a feature missing in most magnetic-imaging techniques. Quantitative information can be extracted from the absolutely calibrated electron wavelength and a knowledge of electron phase shifts in electromagnetic fields. High sensitivity, nanometer spatial resolution, and absolute calibration make electron holography a powerful tool for examining magnetic microstructure. In electron holography, both the amplitude and phase of the transmitted electron waves can be recovered in contrast to conventional electron microscopy where only the intensity is available. The phase, containing information about the local distribution of electromagnetic fields, can be retrieved from an electron hologram.

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