Synthesis of Glass-coated Amorphous Microwires with Different Diameters and Their Magnetic Properties

Fe-rich and Co-rich amorphous glass-coated metal microwires with diameters in the range of 6.1-28.0μm and 14.0-35.2μm were synthesized by the Taylor-Ulitovsky method,respectively.The magnetic parameters of microwires samples with same metal core diameters,different glass coating thicknesses and same glass coating thicknesses,different metal core diameters were analyzed by vibrating sample magnetometer.The results show that the axial coercive fields and remnant magnetization ratios of the two types of microwires reduce with the increasing of metal core diameters,and rise with the increasing of glass coating thicknesses.The changes of radial remnant magnetization ratios of the microwires are reverse with that of the axial remnant magnetization ratios.The influences of metal core diameters and glass coating thicknesses on the magnetostatic properties of glass-coated microwires are due to the changes of the stress of metal cores via the changes of the volume fraction of the metal inner cores and metal outer shells with different magnetic domain framework.