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A baby announcement or birth announcement is a notice traditionally sent to friends and family by the parents of a baby within the first year of the baby's birth for the primary purpose of alerting friends and family to the birth of the baby. A baby announcement will typically include at least some or all of the following information: the baby ...
The ferrite magnets are mainly low-cost magnets since they are made from cheap raw materials: iron oxide and Ba- or Sr-carbonate. However, a new low cost magnet, Mn–Al alloy, [ 38 ] [ non-primary source needed ] [ 44 ] [ 45 ] has been developed and is now dominating the low-cost magnets field.
A neodymium magnet (also known as NdFeB, NIB or Neo magnet) is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd 2 Fe 14 B tetragonal crystalline structure. [1] They are the most widely used type of rare-earth magnet .
Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.
Magnadur is a sintered barium ferrite, specifically BaFe 12 O 19 in an anisotropic form. [1] It is used for making permanent magnets.The material was invented by Mullard and was used initially particularly for focussing rings on cathode-ray tubes.