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Related Concept Videos

Magnetic Force01:18

Magnetic Force

2.1K
In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
2.1K
Atomic Force Microscopy01:08

Atomic Force Microscopy

4.5K
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.6K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.6K
Range00:59

Range

14.2K
The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda:
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
14.2K
Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

5.1K
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
5.1K
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

2.2K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
2.2K

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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

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Metrological large range magnetic force microscopy.

Gaoliang Dai1, Xiukun Hu1, Sibylle Sievers1

  • 1Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany.

The Review of Scientific Instruments
|October 4, 2018
PubMed
Summary
This summary is machine-generated.

A new metrological large range magnetic force microscope (Met. LR-MFM) offers traceable subnanometer accuracy over a 25 mm range. This advanced MFM bridges nanoscale and macroscale magnetic measurements.

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Area of Science:

  • Metrology
  • Materials Science
  • Nanotechnology

Background:

  • Conventional magnetic force microscopes (MFMs) have limited measurement ranges.
  • Accurate and traceable measurements across different scales are challenging.

Purpose of the Study:

  • To develop a metrological large range magnetic force microscope (Met. LR-MFM) for enhanced magnetic field measurements.
  • To achieve subnanometer accuracy and traceability over an extended measurement range.
  • To bridge the gap between nanoscale and macroscale magnetic measurement tools.

Main Methods:

  • Development of a Met. LR-MFM with scanner motion measured by three laser interferometers.
  • Implementation of three distinct measurement strategies: Topo&MFM, MFMXY, and MFMZ.
  • Utilizing a multilayered thin film reference sample and a patterned magnetic multilayer for demonstrations.

Main Results:

  • The Met. LR-MFM achieves a measurement range of 25 mm × 25 mm × 5 mm, significantly larger than conventional MFMs.
  • Subnanometer accuracy and traceability in scanner position and lift height determination.
  • Demonstrated excellent measurement performance on multilayered thin film and patterned magnetic samples.

Conclusions:

  • The developed Met. LR-MFM provides accurate, traceable, and large-range magnetic force microscopy.
  • The instrument's capability to measure from nanoscale to macroscale has significant implications for magnetic field metrology.
  • The new measurement strategies enhance efficiency and expand imaging capabilities for magnetic materials.