Optimization of Fe/Co ratio in Fe(87-x-y)CoxTi7Zr6By alloys for high saturation magnetization

Sumin Kim, Bo Kyeong Han, Duy Truong Quach, Dong Hyun Kim, Young Keun Kim, Haein Choi-Yim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We investigated a soft magnetic Fe(87-x-y)CoxTi7Zr6By (x = 25, 30, 35 at.%, and y = 2, 4 at.%) alloy system. The Fe-based amorphous materials have been studied because of excellent soft magnetic properties: high saturation magnetization and low coercivity. Especially, the Fe-Co system has the high saturation magnetization in comparison to Fe-only and Co-only cases. In this research, we used an X-ray diffractometer, differential scanning calorimeter, vibrating sample magnetometer and high-temperature vibrating sample magnetometer in order to observe the properties of the Fe-Co-Ti-Zr-B alloy system. One of the alloys showed the saturation magnetization of 1.67 T which is same as the highest value of Fe-based amorphous alloys. Furthermore, nanoindentation was performed to study the mechanical properties of this system. The highest and lowest values of nanoindentation hardness were 10.1 GPa and 8.2 GPa, respectively.

Original languageEnglish
Pages (from-to)515-519
Number of pages5
JournalCurrent Applied Physics
Issue number5
Publication statusPublished - 2016 May 1

Bibliographical note

Funding Information:
This research was supported by the Sookmyung Women's University BK21 Plus Scholarship and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2014014945 and 2015005294 ).

Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.


  • Fe-based amorphous
  • Mechanical property
  • Saturation magnetization
  • Soft magnetic

ASJC Scopus subject areas

  • General Materials Science
  • General Physics and Astronomy


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