"Hard Ferrite Magnets" or "Ceramic" Magnets Are Among The Most Popular Permanent Magnets AvailableToday.They are Made From A Combination Of Either Barium Or Strontium Ferritr And Lron Oxide,AndExhibit A High Degree Of Coercive Strength,Making Them More Resistant To Demagnetization.They Are ALow-cost Solution To A Wide Array Of Magnetic Component Applications.Hard Ferrite Or Ceramic MagnetsCan Be Prouced With Either lsotropic Or Anisotropic Properties.The Most Common Grades Producted .Y25 And Y30 Ferrite Materials Are Anisotropic,And Must Therefore Be Magnetized in TheThrough The Pressing (Usually The Shortest) Dimension.Haed Ferrite Magnets Have Excellent CorrosionResistance And Have Normal Operating Capabilities Between -40C And +250C.