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arXiv 1402.0138cond-mat.mtrl-sci
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铁对SmCo5磁体相稳定性和形核效应的影响

Phase stability and Nucleation effect upon Iron addition to SmCo5 bulk magnets

Bhaskar Das, Balamurugan Balasubramanian, David J. Sellmyer

摘要:

研究了SmCo_(5-x)Fe_x永磁体在x = 0 ~ 2范围内的结构和磁性能变化。从X射线衍射(XRD)图案的结构研究证实了六方CaCu 5型结构的SmCo 5-xFex薄带0&lt;x <2. The decrease in angular position of the diffraction peaks points to the lattice expansion due to the substitution of Co atoms by larger Fe atoms. Mixture of phases occurs for x>2,并已被证实的XRD研究和磁性测量。由添加剂Fe诱导的成核效应将矫顽力(Hc)提高到27 kOe,这远大于纯SmCo 5获得的4.5 kOe。

英文摘要:

Change in structure and magnetic properties of SmCo5-xFex permanent magnets for different values of x ranging from 0 to 2 have been studied. Structural investigation from X-ray diffraction (XRD) patterns confirms the hexagonal CaCu5-type structure of the SmCo5-xFex ribbons for 0<x<2. The decrease in angular position of the diffraction peaks points to the lattice expansion due to the substitution of Co atoms by larger Fe atoms. Mixture of phases occurs for x>2 and has been confirmed by both XRD studies and magnetic measurements. Nucleation effect induced by the additive Fe enhances the coercivity (Hc)up to 27 kOe which is much larger than 4.5 kOe obtained for pure SmCo5.

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