Effect of zirconium content on exchange coupling and magnetization reversal of nanocrystalline Nd12.3Fe81.7-xZrxB6 alloy
来源期刊：Journal of Rare Earths2011年第10期
论文作者：包小倩 高学绪 朱洁 周寿增
文章页码：939 - 942
摘 要：The effect of Zr content on exchange coupling and magnetization reversal of the Nd12.3Fe81.7-xZrxB6（x=0-3.0） ribbons was systematically investigated.Interaction domains were imaged by magnetic force microscopy（MFM）.The strength of interactions determined byWohlfarth’s analysis increased first with Zr content x increasing,reached the maximum value at x=1.5,and then decreased with x further increasing.Initial magnetization curves and dependence of coercivity and remanence on applied magnetic field showed that the mechanism ofcoercivity in all samples was mainly of exchange coupling pinning type,which was enhanced with x increasing.It was found bythree-dimensional atom probe（3DAP） that Zr atoms did not partition into the Nd2Fe14B hard magnetic phase,but significantly enriched at theinterfacial region.
包小倩，高学绪，朱洁，周寿增
State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing
摘 要：The effect of Zr content on exchange coupling and magnetization reversal of the Nd12.3Fe81.7-xZrxB6（x=0-3.0） ribbons was systematically investigated.Interaction domains were imaged by magnetic force microscopy（MFM）.The strength of interactions determined byWohlfarth’s analysis increased first with Zr content x increasing,reached the maximum value at x=1.5,and then decreased with x further increasing.Initial magnetization curves and dependence of coercivity and remanence on applied magnetic field showed that the mechanism ofcoercivity in all samples was mainly of exchange coupling pinning type,which was enhanced with x increasing.It was found bythree-dimensional atom probe（3DAP） that Zr atoms did not partition into the Nd2Fe14B hard magnetic phase,but significantly enriched at theinterfacial region.
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