Large scaled ab initio studies on magnetostriciton of Fe1-xGax alloys

• 作 者: Hui Wang R. Q. Wu L. Z. Sun
• 机 构: Shenyang National Laboratory of Materials Science, Institute of Metal Research and International Cen
• 出 处: 中国物理学会2011年秋季学术会议
• 发表日期: 2011年9期

Fe1-xGax binary alloys exhibiting large magnetostriction have great potentials for micor- and nano- Sonar,sensors,actuators and energy harvesting applications.However,the origin and deformation mechanism of such large magnetostriction,especially at high Ga concentration (x ＞ 18.75％),has not been thoroughly studied.Here we conducted an ab initio based molecular dynamics simulation of Fe1-xGax binary alloys in nanoscale and demonstrated the fundamental mechanism of the Ga concentration dependent of tetragonal magnetostriction at 0 ≤ x ≤ 25％ for the first time in the literature.