Effect of Dy on structure and magnetic properties of Dy xFe60.5−xPt39.5 Alloys

Weiqun Zuo; Aiqun Lan; Gang Cheng; Zhengfei Gu; Zhongmin Wang

doi:10.1007/s11595-010-1135-3

Journal of Wuhan University of Technology Materials Science Edition ›› 2010, Vol. 25 ›› Issue (1) : 135 -137. DOI: 10.1007/s11595-010-1135-3

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Effect of Dy on structure and magnetic properties of Dy_xFe_60.5−xPt_39.5 Alloys

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Abstract

Effects of the content of Dy on structure and magnetic properties of Dy_xFe_60.5−xPt_39.5 alloys(x=0, 0.5, 1.0, 1.5) were investigated. The results of XRD analysis proved that the phase-transitional temperature of Dy_xFe_60.5−xPt_39.5 alloys from disordered face-centered-cubic structure to ordered face-centered-tetragonal cubic structure decreases with the increase of the content of Dy(x). Suitable content of Dy can improve the exchange coupling between soft magnetic phase and hard magnetic phase by refining grain size, while the remanence ratio and coercivity of the Fe_60.5Pt_39.5 alloy can be significantly improved by a small replacement of Fe by Dy, good magnetic properties were obtained in Dy_0.5Fe_60.0Pt_39.5 alloys.

Keywords

phase transformation / degree of order / grain size / exchange coupling

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Weiqun Zuo, Aiqun Lan, Gang Cheng, Zhengfei Gu, Zhongmin Wang. Effect of Dy on structure and magnetic properties of Dy_xFe_60.5−xPt_39.5 Alloys. Journal of Wuhan University of Technology Materials Science Edition, 2010, 25(1): 135-137 DOI:10.1007/s11595-010-1135-3

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