Longitudinal Magnetic Fields Longitudinal magnetic fields refer to magnetic fields that are oriented parallel to the direction of propagation of a wave or particle. These fields play a crucial role in various scientific and technological applications, including particle accelerators, plasma physics, astrophysics, and magnetic resonance imaging (MRI). In the context of particle accelerators, longitudinal magnetic [...]
Electricity and Magnetism After reading this section you will be able to do the following: Discuss what happens to a compass when a wire with electrical current is near. Describe the relationship between electricity and magnetism. Why does the compass respond when it is near an electrical wire with current flowing through it? We can [...]
Electromagnetic Fields After reading this section you will be able to do the following: Describe the magnetic fields that surround a current carrying conductor. Iron filings scattered in the vacinity of a current carrying wire will reveal a magnetic field perpendicular to the current flow. Magnetic field lines directed out of the page towards the [...]
Magnetic Field Characteristics After reading this section you will be able to do the following: Describe magnetic fields in different shaped magnets. Understand the important properties possessed by magnetic lines of force. Magnetic Field In and Around a Bar Magnet As discussed previously, a magnetic field is a change in energy within a volume of [...]
Creation of Magnetic Fields After reading this section you will be able to do the following: Define a magnetic field and explain how it is created. Magnetic Field Creation A magnetic field describes a volume of space where there is a change in energy. As Ampere suggested, a magnetic field is produced whenever an electrical [...]
Magnetic Behavior After this reading this section you will be able to do the following: Perform an experiment to detect what materials are magnetic and explain why you think they are magnetic. Magnetism Just like when the Greeks of the old times discovered the first naturally occurring magnetic stones, or natural magnets, you have been [...]
The Two Ends of a Magnet After completing this section you will be able to do the following: Explain what a compass is and how it is affected by a magnet. Understand how a compass helps us to navigate on the earth. Magnets Most people are familiar with the general properties of magnets but are [...]
Magnetic Domain Dynamics Along the Magnetic Hysteresis Curve Inside Permanent Magnet In the long history of permanent magnet research for more than 100 years, three-dimensional magnetic microscopy has been eagerly awaited to elucidate the origin of the magnetic hysteresis of permanent magnets. In this study, we succeeded in observing the three-dimensional magnetic domain structure of [...]
MP Materials begins construction of magnetics plant, cements supply agreement with GM MP Materials has begun construction on its previously announced rare earth metals, alloys and magnet manufacturing facility in Fort Worth, Texas, marking a significant return to magnet manufacturing in North America. The company said that it will invest US$700 million in the next [...]
SOFT MAGNETIC POWDER VS LAMINATE MATERIAL for Electric Motor Efficiency Which is easier to trust -- a 1,300-component assembly with shaky performance, or a 10-component one with reliable data? Many manufacturers have worked with the standard, stamped lamination steels for decades. Engineers know the obstacles associated with them, and they accept them as law. But [...]
Bonded Nd-Fe-B Magnets Bonded Nd-Fe-B magnet have very high dimensional accuracy, magnetic uniformity and consistency. It can be made into complex shapes which are difficult to be realize on sintered Nd-Fe-B magnet, and it is easy to integrate with other metal or plastic parts. Bonded Nd-Fe-B magnet is characterized by a variety of magnetization methods, [...]
Sintered NdFeB Magnets Composition and Microstructure Sintered NdFeB Magnets Composition Sintered NdFeB magnet contains three essential elements: rare earth neodymium, iron and boron. Nd atoms, coupling with ferromagnetic Fe atoms, help the magnet obtain high remanence Br and maximum energy product (BH)max, which makes it extraordinary compared with other permanent magnets. Although B element has [...]