Magnetic properties and Curie temperature tuning in copper-Permalloy alloys obtained by electrodeposition

被引：2
作者：
Teixeira, H. A. [1 ]
de Araujo, C. I. L. [1 ]
机构：
[1] Univ Fed Vicosa, Lab Spintron & Nanomagnetism LabSpiN, Dept Fis, BR-36570900 Vicosa, MG, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2022年 / 561卷
关键词：
Permalloy; Alloy; Electrodeposition; Curie temperature; Thermoactivation; Phase change; Curie temperature [6-9; NI; CU; MORPHOLOGY; NANOPARTICLES; DEPOSITION;
D O I：
10.1016/j.jmmm.2022.169702
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Permalloy copper (CuPy) structures, produced by low cost vacuum free pulsed electrodeposition technique, present relevant results as magnetic material properties hardening and Curie temperature decay in function of Cu concentration. Such properties modification are here related to the slight crystalline phase shift of face cubic centered (FCC) structure to lower angles, evidenced by X-ray measurements, with lattice parameter increase and successively magnetization weakening by Ni atoms substitution by Cu. The fine tuning of Curie temperature decrease reported here, Tc approximate to 800K from pure Permalloy to Tc approximate to 380K for alloy with 67% of Cu, could allow utilization of such technique to develop magnetic sensors and memories with thermal activation achieved near room temperature.
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页数：5
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