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        Study on the Interaction of Compound Bonded Magnets

        Ying Chang,Nuo Ma,Xiaojun Yu,Fazeng Lian,Wei Li 한국자기학회 2004 Journal of Magnetics Vol.9 No.4

        The attempt for the addition of double-phase nanocomposite Nd₂Fe₁₄B/Fe₃B powders, respectively, into several RE₂Fe₁₄B (RE=Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compressed to take shape bonded magnets. By means of investigating the variation of compound magnet Br, the interaction between magnetic powders was revealed. The result shows that not chemical just but physical interaction exists between elements. The compound effect of Nd₂Fe₁₄B/Fe₃B-ferrite bonded magnets was detailed studied. The functional relation was revealed between magnetic properties and ferrite content. That is Y = 5.42 x²-11.34 x + 6.62. The variation of iHc temperature coefficient β_(iHc) with ferrite content was investigated. Following the ferrite content increased, β_(iHc) and hirr were obviously decreased, compression-resistant strength was enhanced.

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