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2. Magnet - Wikipedia

   en.wikipedia.org/wiki/Magnet

   Magnets are also used in other types of fastening devices, such as the magnetic base, the magnetic clamp and the refrigerator magnet. Compasses: A compass (or mariner's compass) is a magnetized pointer free to align itself with a magnetic field, most commonly Earth's magnetic field.

3. Magnetic force microscope - Wikipedia

   en.wikipedia.org/wiki/Magnetic_force_microscope

   where is the magnetic moment of the tip (approximated as a point dipole), is the magnetic stray field from the sample surface, and μ 0 is the magnetic permeability of free space. Because the stray magnetic field from the sample can affect the magnetic state of the tip, and vice versa, interpretation of the MFM measurement is not straightforward.

4. Gouy balance - Wikipedia

   en.wikipedia.org/wiki/Gouy_balance

   Schematic diagram of Gouy balance. The Gouy balance, invented by the French physicist Louis Georges Gouy, is a device for measuring the magnetic susceptibility of a sample. . The Gouy balance operates on magnetic torque, by placing the sample on a horizontal arm or beam suspended by a thin fiber, and placing either a permanent magnet or electromagnet on the other end of the arm, there is a ...

5. Altermagnetism - Wikipedia

   en.wikipedia.org/wiki/Altermagnetism

   Using Nitrogen-vacancy center microscopy and X-ray magnetic linear dichroism (XMLD), they visualized spin-polarized currents arising from the crystal-symmetry-protected altermagnetic order. This order featured antiparallel spin alignment within distinct crystal sublattices, creating a compensating spin polarization without macroscopic ...

6. Magnet motor - Wikipedia

   en.wikipedia.org/wiki/Magnet_motor

   A magnet motor or magnetic motor is a type of perpetual motion machine, which is intended to generate a rotation by means of permanent magnets in stator and rotor without external energy supply. Such a motor is theoretically as well as practically not realizable.

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8. Magnetic susceptibility - Wikipedia

   en.wikipedia.org/wiki/Magnetic_susceptibility

   Magnetic response M is dependent upon the orientation of the sample and can occur in directions other than that of the applied field H. In these cases, volume susceptibility is defined as a tensor : M i = H j χ i j {\displaystyle M_{i}=H_{j}\chi _{ij}} where i and j refer to the directions (e.g., of the x and y Cartesian coordinates ) of the ...

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