Effect of Joule-Heating Annealing on Giant Magnetoimpedance of Co64Fe4Ni2B19-xSi8Cr3Alx (x = 0, 1 and 2) Melt-Spun Ribbons

Gholamipour, Reza; Keyvanara, Amir; Shahri, Farzad; Mirdamadi, Shamsoddin

doi:10.22059/jufgnsm.2017.02.05

Effect of Joule-Heating Annealing on Giant Magnetoimpedance of Co64Fe4Ni2B19-xSi8Cr3Alx (x = 0, 1 and 2) Melt-Spun Ribbons

Document Type : Research Paper

Authors

Reza Gholamipour ¹

Amir Keyvanara ²

Farzad Shahri ¹

Shamsoddin Mirdamadi ²

¹ Iranian Research Organization for Science and Technology (IROST), Tehran, Iran .

² Department of Metallurgy and Materials Engineering, Iran University of Science & Technology (IUST), Tehran, Iran.

10.22059/jufgnsm.2017.02.05

Abstract

In this work, we have studied the influence of dc joule-heating thermal processing on the structure, magnetoimpedance (MI) and thermal properties of Co₆₄Fe₄Ni₂B_19-xSi₈Cr₃Al_x(x = 0, 1, and 2) rapidly solidified melt-spun ribbons. The nanocrystallization process was carried out by the current annealing of as-spun samples at various current densities. As-spun and joule-heated samples were studied by X-ray diffraction (XRD), differential scanning calorimeter (DSC), and magnetoimpedance (MI) measurements. DSC results revealed that by the replacement of B by Al the first and second crystallization peaks are overlapped with each other and the initial nanocrystallization temperature is decreased with the increase in Al content of the alloy. Also it was shown that the replacement of B by Al atoms can improve soft magnetic properties confirmed by magnetoimpedance ratio (MIR%) results for the amorphous joule-heated ribbons. Furthermore, increase in dc joule current density increases the MI ratio first, however; after formation of crystalline phases, it decreases.

Keywords

Co-based alloy

Joule-heating annealing

giant magnetoimpedance

melt-spinning

1. Phan M-H, Peng H-X. Giant magnetoimpedance materials: Fundamentals and applications. Progress in Materials Science. 2008;53(2):323-420.

2. Brunetti L, Coisson M, Tiberto P, Vinai F. Magneto-impedance measurements in amorphous Co-based magnetic wires at high frequency. Journal of Magnetism and Magnetic Materials. 2002;249(1-2):310-4.

3. Knobel M, Vázquez M, Kraus L. Giant Magnetoimpedance. Handbook of Magnetic Materials: Elsevier; 2003. p. 497-563.

4. Wang T, Zhou Y, Lei C, Luo J, Xie S, Pu H. Magnetic impedance biosensor: A review. Biosensors and Bioelectronics. 2017;90:418-35.

5. Zhang D, Pan Z, Zhou H, Zhang W. Magnetic sensor based on giant magneto-impedance effect using the self-regulating technology on the bias magnetic field. Sensors and Actuators A: Physical. 2016;249:225-30.

6. Knobel M, Vázquez M, Kraus L. Giant Magnetoimpedance. Handbook of Magnetic Materials: Elsevier; 2003. p. 497-563.

7. Muraca D, Cremaschi V, Knobel M, Sirkin H. Influence of Ge on magnetic and structural properties of Joule-heated Co-based ribbons: Giant magnetoimpedance response. Journal of Magnetism and Magnetic Materials. 2008;320(15):2068-73.