Atomic Force Microscopy Probe with Integrated Loop and Shielded Leads for Micromagnetic Sensing

2005 ◽  
Vol 872 ◽  
Author(s):  
D.P. Lagally ◽  
A. Karbassi ◽  
Y. Wang ◽  
C.A. Paulson ◽  
D. W. van der Weide
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
High Spatial Resolution ◽  
Magnetic Moments ◽  
Chemical Species ◽  
Magnetic Resonance Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Magnetic Resonance Imaging Mri

The effort to produce an instrument that can achieve high spatial resolution, nondestructive, surface and sub-surface imaging for a variety of materials comes with many challenges. One approach, magnetic resonance-force microscopy (MRFM), lies at the nexus of two sensitive technologies: magnetic force microscopy (MFM) and magnetic resonance imaging (MRI). MFM uses a magnetic tip in a standard atomic force microscope (AFM) to obtain magnetic information about a surface. A difference in the magnetic moments of surface atoms in different regions on the surface varies the cantilever resonance. MRI, on the other hand, uses the spin states of magnetically biased atoms to differentiate between chemical species.

FORCE-DETECTED SCANNED PROBE MAGNETIC RESONANCE MICROSCOPY

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3378-3378
Author(s):  
P. C. HAMMEL
Keyword(s):  
Magnetic Resonance ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Atomic Scale ◽  
Magnetic Resonance Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Unique Method ◽  
Magnetic Resonance Imaging Mri ◽  
Non Destructive

Magnetic Resonance Force Microscopy (MRFM) is a novel scanned probe technique that combines the three-dimensional imaging capabilities of magnetic resonance imaging (MRI) with the high sensitivity and resolution of atomic force microscopy (AFM). This emerging technology holds clear potential for resolution at the atomic scale. When fully realized, MRFM will provide a unique method for non-destructive, chemically specifc, subsurface imaging with applicability to a wide variety of materials. I will review results to date spanning applications of MRFM to nuclear spin, electron spin, and ferromagnetic resonance. I will outline the MRFM technique, discuss its present status and indicate future directions of our effort.

Challenges and Opportunities in Magnetic Resonance Force Microscopy

1994 ◽  
Vol 332 ◽  
Author(s):  
John A. Sidles ◽  
Joseph L. Garbini
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Force ◽  
Magnetic Resonance Force Microscopy ◽  
Force Microscopy ◽  
Single Spin ◽  
Challenges And Opportunities ◽  
Potential Applications ◽  
Biomolecular Imaging ◽  
Spin Detection ◽  
Physical Principles

ABSTRACTRecently the first experiments in magnetic resonance force microscopy (MRFM) have been conducted. In these experiments a force microscope cantilever is used to detect the magnetic force exerted by electrons and nuclei in a sample. The magnetization of the sample is modulated at the resonant frequency of the cantilever, using standard magnetic resonance techniques. The resulting excitation of the cantilever is detected optically. This article reviews the present status of MRFM technology, emphasizing the physical principles involved and the opportunities for further research and development. Particular emphasis is placed on single spin detection by MRFM and potential applications in biomolecular imaging.

Blocking of magnetic moments of magnetosomes measured by magnetorelaxometry and direct observation by magnetic force microscopy

2005 ◽  
Vol 289 ◽  
pp. 70-73 ◽  
Author(s):  
Dietmar Eberbeck ◽  
Volker Janke ◽  
Stefan Hartwig ◽  
Udo Heyen ◽  
Dirk Schüler ◽  
...  
Keyword(s):  
Direct Observation ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic Moments ◽  
Force Microscopy

Magnetic Films of Cobalt/Aluminum Electrodeposited from the Room Temperature Molten Salts AlCl3-BPC-CoCl2

2004 ◽  
Vol 59 (5) ◽  
pp. 519-524 ◽  
Author(s):  
Chao-Chen Yang ◽  
Te-Ho Wu ◽  
Min-Fong Shu
Keyword(s):  
Thin Films ◽  
Magnetic Force Microscopy ◽  
Room Temperature ◽  
Magnetic Force ◽  
Current Method ◽  
Magnetic Films ◽  
Deposition Potential ◽  
Force Microscopy ◽  
Atomic Force ◽  
Increasing Temperature

Abstract The electric conductivities of molten mixtures of aluminum chloride-butylpyridinium chloridecobalt chloride (AlCl3-BPC-CoCl2) were measured using a computerized direct-current method. The conductivities of all the melts increased with increasing temperature. The electrodeposition of Co/Al films from the AlCl3-BPC melt containing a small amount of CoCl2 has been studied by cyclic voltammetry. Compact and smooth Co/Al thin films could be obtained at a deposition potential of −0.4 V. The surface morphology and the composition of the electrodeposited thin films were studied using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The magnetic properties of the deposited thin films have been investigated via magnetic force microscopy (MFM) and vibrating sample magnetometry (VSM). Higher magnetization and smooth domains of Co/Al layers could be obtained at the deposition potentials of −0.1 V and −0.4 V, respectively.

A study of nanostructure magnetosolid Nd–Ho–Fe–Co–B materials via atomic force microscopy and magnetic force microscopy

2016 ◽  
Vol 58 (9) ◽  
pp. 1862-1869 ◽  
Author(s):  
N. V. Andreeva ◽  
A. V. Filimonov ◽  
A. I. Rudskoi ◽  
G. S. Burkhanov ◽  
I. S. Tereshina ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Microscopia de varredura por sonda (SPM) aplicada a aços inoxidáveis dúplex

2007 ◽  
Vol 60 (1) ◽  
pp. 183-187
Author(s):  
Fabricio Simão dos Santos ◽  
Simoni Maria Gheno ◽  
Sebastião Elias Kuri
Keyword(s):  
Atomic Force Microscopy ◽  
Scanning Probe Microscopy ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Scanning Probe ◽  
Probe Microscopy ◽  
Force Microscopy ◽  
Atomic Force

Nesse trabalho, a microscopia de varredura por sonda (Scanning Probe Microscopy - SPM), nos modos contato (Atomic Force Microscopy - AFM) e de força magnética (Magnetic Force Microscopy - MFM), foi utilizada para analisar a microestrutura de um aço inoxidável dúplex 2205 solubilizado e envelhecido. Foi feita uma análise por AFM da superfície do aço solubilizado após crescimento de filme passivo. Por AFM, obteve-se indicação de crescimento de filme sobre a microestrutura do aço solubilizado, enquanto por MFM a distribuição de fases pôde ser observada sem a necessidade de ataque da superfície.

Features of Surface Morphology and Magnetic Properties of Sm0.5R0.5Fe2 (R = Tb, Gd) Compounds

2020 ◽  
Vol 312 ◽  
pp. 261-269
Author(s):  
Galina Aleksandrovna Politova ◽  
Tatiana P. Kaminskaya ◽  
Alexey Karpenkov ◽  
Nikolay Yu. Pankratov ◽  
Maksim Ganin ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Force Microscopy ◽  
Room Temperature ◽  
Magnetic Force ◽  
Magnetic Domain ◽  
Surface Topology ◽  
Partial Replacement ◽  
Force Microscopy ◽  
Atomic Force ◽  
Comprehensive Study

A comprehensive study of the structure and phase composition, magnetostrictive and magnetic properties of the (Sm0.5R0.5)Fe2 (R = Gd, Tb) compounds was performed. The effect of partial replacement of samarium by gadolinium and terbium on the microstructure of the surface, the temperature of phase transitions, the magnitude of magnetostrictive deformations and magnetization was studied. Using atomic force and magnetic force microscopy, the surface topology at the micro and nanoscale was established, and information on the magnetic domain structure at room temperature was obtained.

INVESTIGATION OF SURFACE MAGNETIC STRUCTURE IN STEELS OF A SYSTEM Fe–Mn–Al–C BY ATOMIC FORCE MICROSCOPY

1999 ◽  
Vol 06 (01) ◽  
pp. 115-125 ◽  
Author(s):  
G. L. KLIMCHITSKAYA ◽  
R. PRIOLI ◽  
S. I. ZANETTE ◽  
A. O. CARIDE ◽  
O. ACSELRAD ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Structure ◽  
Isothermal Aging ◽  
Magnetic Force Microscopy ◽  
Magnetic Field Dependence ◽  
Magnetic Force ◽  
Force Microscopy ◽  
Atomic Force ◽  
Good Imaging ◽  
The Magnetic Field

Magnetic force microscopy (MFM) is used to investigate the surface magnetic structure of steels Fe–28Mn–8.5Al–1C–1.4Si under the different regimes of isothermal aging. A theoretical model for the MFM imaging of such structures is developed. Calculation of van der Waals forces is performed in order to interpret the topography images. The lateral resolution in terms of the magnetic field dependence on the surface coordinates is investigated. Finally, conditions that should be fulfilled for a good imaging of the samples are formulated.

scholarly journals Magnetic Imaging of Encapsulated Superparamagnetic Nanoparticles by Data Fusion of Magnetic Force Microscopy and Atomic Force Microscopy Signals for Correction of Topographic Crosstalk

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2486
Author(s):  
Marc Fuhrmann ◽  
Anna Musyanovych ◽  
Ronald Thoelen ◽  
Sibylle von Bomhard ◽  
Hildegard Möbius
Keyword(s):  
Atomic Force Microscopy ◽  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Data Fusion ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Capacitive Coupling ◽  
Phase Image ◽  
Force Microscopy ◽  
Atomic Force

Encapsulated magnetic nanoparticles are of increasing interest for biomedical applications. However, up to now, it is still not possible to characterize their localized magnetic properties within the capsules. Magnetic Force Microscopy (MFM) has proved to be a suitable technique to image magnetic nanoparticles at ambient conditions revealing information about the spatial distribution and the magnetic properties of the nanoparticles simultaneously. However, MFM measurements on magnetic nanoparticles lead to falsifications of the magnetic MFM signal due to the topographic crosstalk. The origin of the topographic crosstalk in MFM has been proven to be capacitive coupling effects due to distance change between the substrate and tip measuring above the nanoparticle. In this paper, we present data fusion of the topography measurements of Atomic Force Microscopy (AFM) and the phase image of MFM measurements in combination with the theory of capacitive coupling in order to eliminate the topographic crosstalk in the phase image. This method offers a novel approach for the magnetic visualization of encapsulated magnetic nanoparticles.

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