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Abstract
Due to heating of the electrolyte is an excluded abnormal codeposition alloy components and reduced variation of process parameters to achieve optimal magnetic properties Ni81Fe19 films of magnetic field concentrators. Proposed chloride electrolyte pH adjusted with hydrochloric acid, which provides congruent electrochemical deposition of permalloy at heating and stirring. Magnetic properties of permalloy films are very sensitive to the variation of component relationships of 4.26. Control of accuracy of preparation of chloride electrolyte for electrochemical deposition of NiFe conducted using spectrophotometry. It is shown that the selection process of cooking the electrolyte for electrodeposition of Ni81Fe19 alloy and temperature allow to get normal, congruent electrochemical deposition of permalloy films. It has been established that the anomalous character of permalloy deposition associated with the main feature of iron ions-the existence of variable Valence iron with two or three values in the charge of ions during the hydrolysis of iron salts.
Highlights
NiFe alloy has high maximum relative magnetic permeability μ~100 000, low coercivity 1 Oe (Figure 1)
The use of dilute chloride electrolyte for NiFe deposition with a ratio of СNi/СFe= 4.26 confirms the principle that the charge of iron ions influences the composition of permalloy films
The magnetic properties of permalloy films prepared by the local electrochemical deposition of a chloride electrolyte, with aspecified ratio of Ni/Fe = 4.26, were investigated
Summary
NiFe alloy has high maximum relative magnetic permeability μ~100 000, low coercivity 1 Oe (Figure 1). These properties are manifested in a narrow range of changes in the composition 80% Ni [1]. The possibility of strengthening the magnetic induction to five orders of magnitude is of great interest to developers magneto sensitivity integrated microsystems
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