MAGNETIC-PROPERTIES OF ND2(FE1-XCOX)14B AND Y2(FE1-XCOX)14B

Magnetic properties of Nd//2(Fe//1// minus //xCo//x)//1//4B and Y//2(Fe//1// minus //xCo//x)//1//4B have been studied by magnetic measurements and x-ray diffraction. Magnetocrystalline anisotropy of Y//2(Fe//1// minus //xCo//x)//1//4B decreases monotonically with increasing Co concentration at room temperature, but increases and reaches a maximum at about x equals 0. 4 and 0. 2 for T equals 1. 5 K and 150 K respectively. The effect of substituting Co for Fe on spin reorientation temperature is complicated for the Nd//2(Fe//1// minus //xCo//x)//1//4B. Saturation magnetization has a maximum value at about x equals 0. 1 at 1. 5 K. Curie temperature is enhanced significantly by the substitution of Co for Fe. The effects of Co on Curie temperature are almost the same for both Nd//2(Fe//1// minus //xCo//x)//1//4B and Y//2(Fe//1// minus //xCo//x)//1//4B, indicating that Curie temperature is essentially determined by the 3d-3d atom exchange interactions.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1987L928200085&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Engineering, Electrical & ElectronicPhysics, AppliedSCI(E)EI6ARTICLE52296-22982