Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction

Zhihua Nie*, Zilong Wang, Yanbin Liang, Daoyong Cong, Gaoqiang Li, Cheng Zhu, Chengwen Tan, Xiaodong Yu, Yang Ren, Yandong Wang

*Corresponding author for this work

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Abstract

The magnetostriction of Fe-Ga alloys is significantly affected by the Ga content, which displays two positive peaks with increasing Ga concentration. This work presents a systematic structural investigation of rapidly-cooled Fe-Ga alloys by the synchrotron-based high-energy x-ray diffraction. Ga-rich clusters are evidenced for the alloys beyond the first magnetostriction peak, which is identified by the anomalous peak broadening for the (200) fundamental reflection and a shrink of lattice parameter. The generation of Ga-rich clusters in A2 matrix results in the sudden decrease of magnetostriction after the first magnetostriction peak. These findings are important for designing high-performance Fe-Ga magnetostrictive alloys by structural tuning.

Original languageEnglish
Pages (from-to)223-227
Number of pages5
JournalJournal of Alloys and Compounds
Volume763
DOIs
Publication statusPublished - 30 Sept 2018

Keywords

  • Crystal structure
  • Fe-Ga
  • High-energy x-ray diffraction
  • Magnetostriction
  • Superlattice

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Nie, Z., Wang, Z., Liang, Y., Cong, D., Li, G., Zhu, C., Tan, C., Yu, X., Ren, Y., & Wang, Y. (2018). Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction. Journal of Alloys and Compounds, 763, 223-227. https://doi.org/10.1016/j.jallcom.2018.05.327