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Title: Influence of ball milling on atomic structure and magnetic properties of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} glassy alloy

Abstract

The influence of ball milling on the atomic structure and magnetic properties of the Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} metallic glass with a high thermal stability and excellent soft magnetic properties has been investigated. After 14 h of milling, the obtained powders were found to consist mainly of an amorphous phase and a small fraction of the (Co,Fe){sub 21}Ta{sub 2}B{sub 6} nanocrystals. The changes in the reduced pair correlation functions suggest noticeable changes in the atomic structure of the amorphous upon ball milling. Furthermore, it has been shown that milling is accompanied by introduction of compressive and dilatational sites in the glassy phase and increasing the fluctuation of the atomic-level hydrostatic stress without affecting the coordination number of the nearest neighbors. Ball milling has decreased the thermal stability and significantly affected the magnetic properties through increasing the saturation magnetization, Curie temperature of the amorphous phase and coercivity. - Highlights: • Ball milling affected the atomic structure of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} metallic glass. • Mechanically-induced crystallization started after 4 h milling. • Milling increased the fluctuation of the atomic-level hydrostatic stress in glass. • Ball milling influenced the thermal stability and magnetic properties.

Authors:
 [1];  [2];  [1]; ;  [1];  [3];  [1]
  1. IFW Dresden, Institute for Complex Materials, Helmholtzstr. 20, 01069 Dresden (Germany)
  2. HASYLAB at DESY, Notkestrasse 85, 22603 Hamburg (Germany)
  3. Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22340370
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 92; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; COERCIVE FORCE; CRYSTALLIZATION; MAGNETIC PROPERTIES; MAGNETIZATION; METALLIC GLASSES; MILLING; NANOSTRUCTURES; STABILITY; STRESSES

Citation Formats

Taghvaei, Amir Hossein, E-mail: Amirtaghvaei@gmail.com, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Stoica, Mihai, Politehnica University of Timisoara, P-ta Victoriei 2, Timisoara, Bednarčik, Jozef, Kaban, Ivan, TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden, Shahabi, Hamed Shakur, Khoshkhoo, Mohsen Samadi, Janghorban, Kamal, Eckert, Jürgen, and TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden. Influence of ball milling on atomic structure and magnetic properties of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} glassy alloy. United States: N. p., 2014. Web. doi:10.1016/J.MATCHAR.2014.02.016.
Taghvaei, Amir Hossein, E-mail: Amirtaghvaei@gmail.com, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Stoica, Mihai, Politehnica University of Timisoara, P-ta Victoriei 2, Timisoara, Bednarčik, Jozef, Kaban, Ivan, TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden, Shahabi, Hamed Shakur, Khoshkhoo, Mohsen Samadi, Janghorban, Kamal, Eckert, Jürgen, & TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden. Influence of ball milling on atomic structure and magnetic properties of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} glassy alloy. United States. https://doi.org/10.1016/J.MATCHAR.2014.02.016
Taghvaei, Amir Hossein, E-mail: Amirtaghvaei@gmail.com, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Stoica, Mihai, Politehnica University of Timisoara, P-ta Victoriei 2, Timisoara, Bednarčik, Jozef, Kaban, Ivan, TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden, Shahabi, Hamed Shakur, Khoshkhoo, Mohsen Samadi, Janghorban, Kamal, Eckert, Jürgen, and TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden. 2014. "Influence of ball milling on atomic structure and magnetic properties of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} glassy alloy". United States. https://doi.org/10.1016/J.MATCHAR.2014.02.016.
@article{osti_22340370,
title = {Influence of ball milling on atomic structure and magnetic properties of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} glassy alloy},
author = {Taghvaei, Amir Hossein, E-mail: Amirtaghvaei@gmail.com and Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz and Stoica, Mihai and Politehnica University of Timisoara, P-ta Victoriei 2, Timisoara and Bednarčik, Jozef and Kaban, Ivan and TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden and Shahabi, Hamed Shakur and Khoshkhoo, Mohsen Samadi and Janghorban, Kamal and Eckert, Jürgen and TU Dresden, Institut für Werkstoffwissenschaft, 01062 Dresden},
abstractNote = {The influence of ball milling on the atomic structure and magnetic properties of the Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} metallic glass with a high thermal stability and excellent soft magnetic properties has been investigated. After 14 h of milling, the obtained powders were found to consist mainly of an amorphous phase and a small fraction of the (Co,Fe){sub 21}Ta{sub 2}B{sub 6} nanocrystals. The changes in the reduced pair correlation functions suggest noticeable changes in the atomic structure of the amorphous upon ball milling. Furthermore, it has been shown that milling is accompanied by introduction of compressive and dilatational sites in the glassy phase and increasing the fluctuation of the atomic-level hydrostatic stress without affecting the coordination number of the nearest neighbors. Ball milling has decreased the thermal stability and significantly affected the magnetic properties through increasing the saturation magnetization, Curie temperature of the amorphous phase and coercivity. - Highlights: • Ball milling affected the atomic structure of Co{sub 40}Fe{sub 22}Ta{sub 8}B{sub 30} metallic glass. • Mechanically-induced crystallization started after 4 h milling. • Milling increased the fluctuation of the atomic-level hydrostatic stress in glass. • Ball milling influenced the thermal stability and magnetic properties.},
doi = {10.1016/J.MATCHAR.2014.02.016},
url = {https://www.osti.gov/biblio/22340370}, journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 92,
place = {United States},
year = {Sun Jun 01 00:00:00 EDT 2014},
month = {Sun Jun 01 00:00:00 EDT 2014}
}