During the few past years a great quantity of data has been published about bulk amorphous alloys [1-2]. One of the main studying aims is to find alloys with high glass-forming ability (GFA), purposed for controlled crystallization process to obtain nanocrystalline materials with fine grains proportionally displaced in amorphous matrix. The other aim is to obtain magnetic material with good soft magnetic properties.
In this work microstructure and magnetic properties of  Fe₆₀Co₅Zr₁₀Mo₅B₂₀ bulk amorphous and partially crystallized alloys has been investigated. All investigated samples were prepared using induction suction method, in a protective atmosphere, as a plates of 1 and 0,5 mm thickness. The study of the microstructure were performed using X-ray diffraction and mössbauer spectroscopy. The magnetic properties were investigated using LakeShore VSM magnetometer and Ferrotester. From analysis of hysteresis loops and initial magnetization curve the magnetic parameters were derived.  The Ferrotester was used to determine the dependence of  hysteresis losses in function of frequency. All microstructure and magnetic measurement were performed in room temperature. The thermal stability after solidification process and characteristic coefficients of the alloys with amorphous matrix were obtained using differential scanning calorymetry (DSC).
It was shown that presence of few percent of fine grains in amorphous matrix lead to improvement of soft magnetic properties. The coercivity of the sample decrease from 210 A/m to 60 A/m, and saturation of the magnetization rise about 20 kA/m. It was also shown that partially crystallized alloy have lover hysteresis losses then amorphous one.

[1] Akihisa Inoue, Tao Zhang, and Hisato Koshiba; J. Appl. Phys. 83, 6326 (1998); DOI:10.1063/1.367811

[2] M. Xu, M. X. Quana, Z. Q. Hua, L. Z. Chengb and K. Y. Heb; Journal of Alloys and Compounds; Vol 334, Issues 1-2, 28 February 2002, Pages 238-242

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/20862 must be provided.

1. Study of the mechanical and magnetic properties of Fe₆₁Co₁₀Zr_5-xHf_xW₂Y₂B₂₀ (x = 0, 3) bulk amorphous and crystalline alloys 
2. Microstructure, thermal stability and magnetic properties of bulk amorphous Fe_73-xCo_xNb₅Y₃B₁₉ (x = 0 or 10)
3. Structural and magnetic properties of multilayer system ferromagnetic/metallic separator/ferromagnetic
4. Thermal stability and soft magnetic properties of  Fe₆₁Co₁₀Zr_2,5Hf_2,5Me_4-xW₂B₂₀ (Me = Nb, Mo, Ti, Y, Ni) bulk amorphous alloys obtained by induction suction method.
5. Corrosion behaviour of amorphous and crystalline Fe₅₉Co₁₀Zr₂Y₄Nb₅Ni₅B₁₅ alloy in acidified sulphate and phosphate environments
6. Study of the magnetic interaction in nanocrystalline Pr-Fe-Co-Nb-B permanent magnets.
7. Phase decomposition and some magnetic properties in bulk amorphous multicomponent Fe‑based alloys
8. Structure and approach to magnetic saturation in the Fe₃₆Co₃₆B₁₉Si₅Nb₄ bulk amorphous alloy
9. Magnetic properties of anisotropic Nd-Fe-B resin bonded magnets