Are there efforts to develop alternative permanent magnet materials?

Magnetism is an engaging context for science learning, and investigating the properties of magnets is a great activity for building curiosity. Moving students ... Magnetism is a force that has the ability to repel or attract objects that contain magnetic material, such as iron, nickel, cobalt and some alloys of rare ... A magnetic sensor usually refers to a sensor that converts the magnitude and variations of a magnetic field into electric signals. Magnetic fields, as ... The Electromagnetic Spectrum. The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as ... Jan 29, 2008 ... Scientists have discovered that the magnetic strength of magnetite—the most abundant magnetic mineral on Earth—declines drastically when put ... The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, ... Jan 30, 2018 ... When reconnection occurs on the sunward side of Earth, as was seen in the recent study, “it changes the magnetic energy in the system. This ... Explore concepts such as electrostatics, conductors, capacitors and dielectrics, electric circuits, magnetic fields, and electromagnetism in AP Physics C: ... A new version of the model is updated every five years to address changes in Earth's magnetic field. The current version (WMM2025) was released on December 17, ... Aug 21, 2014 ... Magnetic fields that surpass about a billion Gauss are so strong that they compress atoms to tiny needles, destroying the ordinary chemical ...