Effects of thickness and heat treatments on giant magnetoimpedance of electrodeposited cobalt on silver wires

High-frequency magnetoimpedance properties in Finemet-type ribbons with a Cu–Co electrodeposited layer

“…This is because ı is larger than the thickness of the ribbon and the current flows through the entire cross-section [4]. (ii) For frequencies higher than 100 kHz and up to a few hundred of MHz, GMI rapidly increases, reaching a maximum ratio at a certain critical frequency f c .…”

“…At very low f (up to few kHz), GMI is essentially a magnetoinductive effect [1], but from roughly 10 kHz the dominant effect is the variation of the skin depth ı, i.e., the depth at which the AC current density reduces to 37% of that at the surface [4] be written as ı = [1/( f)] 1/2 , where is the electrical conductivity of the sample and is t or . GMI depends on several factors including H DC , f and amplitude of the AC current flowing through the conductor, sample geometry, composition and microstructure.…”

Giant magnetoimpedance in electrodeposited CoNiFe/Cu wire: A study on thickness dependence

“…On the other hand, Atalay and Atalay [11] showed that higher values of MI can be obtained at larger thicknesses of NiFe film. Jantaratana and Sirisathitkul also have reported effect of coating thickness variation of electrodeposited Co/Cu on magnetoimpedance phenomenon quite beautifully [19]. Effect of other deposition parameters, such as, pH of deposition bath and composition of the bath on MI has also been studied on CoNiFe/Cu wire [20][21][22].…”

Magnetoimpedance and Field Sensitivity of CoFeSiB Amorphous Ribbons under Applied Tensile Stress

“…Magnetic properties of ferromagnetic specimen in the forms of ribbons [6] and thin films [7] are sensitively influenced by structural defects. The structural defects as regions of lower or higher density are the sources of compressive or tensile internal stresses and they influence the domain structure and indirectly the magnetization process [8,9].…”