Magnetostriction and magnetization of <110> oriented Tb0.27Dy0.73Fe1.95 alloys with different compressive prestresses  

作　　者：Xing Mu Hai-Jun Tang Xue-Xu Gao Xiao-Qian Bao Ji-Heng Li 

机构地区：[1]State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing100083,China [2]China Academy of Civil Aviation Science and Technology,Beijing100028,China

出　　处：《Rare Metals》2020年第2期176-180,共5页稀有金属（英文版）

基　　金：financially supported by the National High Technology Research and Development Program of China(No.2011AA03A404).

摘　　要：<110> oriented Tb0.27Dy0.73Fe1.95 alloys were studied under different applied compressive prestresses.Larger saturation magnetostriction by 500×10-6 is obtained for the sample under 5 MPa than that under no applied stress.To understand the effect of prestress on the magnetostrictive coefficient,differential magnetostrictive coefficient,relative permeability and coercive force were studied in detail.The results show that the maximum differential magnetostrictive coefficient is about 37 x 10-9 m·A-1,about two times that without stress.In addition,the saturation magnetostriction coefficient increases gradually with the stress increasing,while the maximum differential magnetostrictive coefficient decreases.The saturation inductions under different stresses are similar to a value of about 1.1 T.The relative permeability decreases with stress increasing.<110> oriented Tb0.27Dy0.73Fe1.95 alloys were studied under different applied compressive prestresses.Larger saturation magnetostriction by 500×10-6 is obtained for the sample under 5 MPa than that under no applied stress.To understand the effect of prestress on the magnetostrictive coefficient,differential magnetostrictive coefficient,relative permeability and coercive force were studied in detail.The results show that the maximum differential magnetostrictive coefficient is about 37 x 10-9 m·A-1,about two times that without stress.In addition,the saturation magnetostriction coefficient increases gradually with the stress increasing,while the maximum differential magnetostrictive coefficient decreases.The saturation inductions under different stresses are similar to a value of about 1.1 T.The relative permeability decreases with stress increasing.

关 键 词：Tb-Dy-Fe COMPRESSIVE PRESTRESS MAGNETOSTRICTION 

分 类 号：TG146.45[一般工业技术—材料科学与工程]