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2. Magnetic refrigeration - Wikipedia

   en.wikipedia.org/wiki/Magnetic_refrigeration

   The first working magnetic refrigerators were constructed by several groups beginning in 1933. Magnetic refrigeration was the first method developed for cooling below about 0.3 K (the lowest temperature attainable before magnetic refrigeration, by pumping on 3 He vapors).

3. Halbach array - Wikipedia

   en.wikipedia.org/wiki/Halbach_array

   Magnetic viewing film showing a flat refrigerator magnet's magnetization Flat flexible (not hard ceramic ferrite ) refrigerator magnets are created with a Halbach magnetization pattern for a stronger holding force when attached to a flat ferromagnetic surface (e.g. a fridge door) than the holding force from a uniform magnetization.

4. Demagnetizing field - Wikipedia

   en.wikipedia.org/wiki/Demagnetizing_field

   The demagnetizing field, also called the stray field (outside the magnet), is the magnetic field (H-field) [1] generated by the magnetization in a magnet.The total magnetic field in a region containing magnets is the sum of the demagnetizing fields of the magnets and the magnetic field due to any free currents or displacement currents.

5. Refrigeration - Wikipedia

   en.wikipedia.org/wiki/Refrigeration

   Magnetic refrigeration, or adiabatic demagnetization, is a cooling technology based on the magnetocaloric effect, an intrinsic property of magnetic solids. The refrigerant is often a paramagnetic salt , such as cerium magnesium nitrate .

6. Ferrite (magnet) - Wikipedia

   en.wikipedia.org/wiki/Ferrite_(magnet)

   Due to ceramic ferrite magnet’s weaker magnetic fields compared to superconducting magnets, they are sometimes used in low-field or open MRI systems. [ 41 ] [ 42 ] These magnets are favored in certain cases due to their lower cost, stable magnetic field , and ability to function without the need for complex cooling systems.

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   #16 No More Wrestling With Ice Trays! This Easy Release Ice Cube Mold Is A Game-Changer. Review: "this ice cube tray is perfect for any fridge, it is easy to fill, use, and release. The included ...