Coercivity Enhancement in Zr2Co11-Based Nanocrystalline Materials Due to Mo Addition

Authors

Wenyong Zhang, University of Nebraska-LincolnFollow
Shah R. Valloppilly, University of Nebraska-LincolnFollow
Xingzhong Li, University of Nebraska-LincolnFollow
Ralph Skomski, University of Nebraska-LincolnFollow
Jeffrey E. Shield, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

11-2012

Citation

IEEE TRANSACTIONS ON MAGNETICS, VOL. 48, NO. 11, NOVEMBER 2012; Doi: 10.1109/TMAG.2012.2198453

Comments

Copyright 2011 IEEE. Used by permission.

Abstract

The Mo-content dependence of structure and magnetic properties of Zr₁₆Co_78-xMo_xSi₃B₃ (x = 0, 2, 3, 4, 5 ) nanocrystalline materials has been studied. The samples consist of hard-magnetic Zr₂Co₁₁ and soft-magnetic Co phases. The substitution of Mo for Co restrains the formation of Co, raises the content of Zr₂Co₁₁, and increases the mean grain size of Zr₂Co₁₁. Therefore, the coercive force of the sample increases with x. A coercive force of 7.9 kOe, which is a highest value reported among Zr-Co alloys, was achieved for x = 5. The anisotropy field of Zr₂Co₁₁ remains almost unchanged with increasing Mo content.