TwIntroduction

Introduction


A variety of soft magnetic products in different material types, core shapes and sizes are manufactured in ACME. These products are widely used for the manufacture of chokes, inductors, filters, transformers, antennas and other components or devices that are applied in the fields of communication, lighting, alternative energy, automotive, medical system, consumer and industrial electronics. ACME’s products are adopted by leading manufacturers of these components and devices worldwide.. INTRODUCTION TO FERRITES Ferrites are categorized as electroceramics with ferrimagnetic properties. Due to superexchange interactions between the electrons of metal and oxygen ions ferrites behave ferrimagnetism. The less parallel spin alignment in ferrites results lower magnetization compared to ferromagnetic metals in which the spin moments are oriented parallel to one another. Due to the intrinsic interactions between oxygen and metal ions in atomic level, ferrites possess higher resistivity in comparison to ferromagnetic metals. This makes ferrites considerably useful in a wide range of applications at higher frequencies and technologically very valuable. The crystal structure of ferrites is formed with spinel lattice having the chemical formula MeFe2O4 where Me represents a divalent metal ion (e.g. Fe2+, Ni2+, Mn2+, Mg2+, Co2+, Zn2+, Cu2+ etc.). Nowadays the most popular compounds of commercial ferrites are MnZnFe2O4 and NiZnFe2O4 with major difference in resistivity between each other. The material properties illustrated in the data sheets are defined by toroidal cores for each material grad.

A variety of soft magnetic products in different material types, core shapes and sizes are manufactured in ACME. These products are widely used for the manufacture of chokes, inductors, filters, transformers, antennas and other components or devices that are applied in the fields of communication, lighting, alternative energy, automotive, medical system, consumer and industrial electronics. ACME’s products are adopted by leading manufacturers of these components and devices worldwide..

INTRODUCTION TO FERRITES Ferrites are categorized as electroceramics with ferrimagnetic properties. Due to superexchange interactions between the electrons of metal and oxygen ions ferrites behave ferrimagnetism. The less parallel spin alignment in ferrites results lower magnetization compared to ferromagnetic metals in which the spin moments are oriented parallel to one another. Due to the intrinsic interactions between oxygen and metal ions in atomic level, ferrites possess higher resistivity in comparison to ferromagnetic metals. This makes ferrites considerably useful in a wide range of applications at higher frequencies and technologically very valuable. The crystal structure of ferrites is formed with spinel lattice having the chemical formula MeFe2O4 where Me represents a divalent metal ion (e.g. Fe2+, Ni2+, Mn2+, Mg2+, Co2+, Zn2+, Cu2+ etc.). Nowadays the most popular compounds of commercial ferrites are MnZnFe2O4 and NiZnFe2O4 with major difference in resistivity between each other. The material properties illustrated in the data sheets are defined by toroidal cores for each material grad.