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 at LincolnFollow
Jeffrey E. Shield, University of Nebraska - LincolnFollow
David J. Sellmyer, NCMNFollow

Date of this Version

11-2012

Citation

IEEE TRANSACTIONS ON MAGNETICS, VOL. 48, NO. 11, NOVEMBER 2012

Abstract

The Mo-content dependence of structure and magnetic properties of Zr₁₆Co_78-xMoxSi₃B₃ (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 anisotrophy field of Zr₂Co₁₁ remains almost unchanged with increasing Mo content.