High field and Mössbauer investigation of the magnetic structure in melt spun DyFeb>6b>Alb>6b>

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• 作者：Kerschl ; Peter ; R&ouml ; ß ; ler ; Ulrich K. ; Grenè ; che ; Jean Marc ; Idzikowski ; Bogdan ; et. al.
• 关键词：73.50 Fq ; 75.30 Kz ; 75.50 Gg ; 76.80+y ; DyFeb>6b>Alb>6b> ; Rare earth transition metal compounds ; Magnetically ordered compounds ; High field magnetic measurements ; M&ouml ; ssbauer spectroscopy
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2004
• 期刊代码：31_03048853
• 类别：ph
• 出版时间：May, 2004
• 卷：272-276
• 期：Part 1
• 页码：627-628
• 文件大小：233 K

摘要

DyFeb>6b>Alb>6b> with the tetragonal I4/mmm structure akin to ThMnb>12b> type has been prepared by melt spinning. It shows ferrimagnetic ordering at 340K. At low temperature, a further magnetic transition takes place which results in vanishing spontaneous magnetisation below 40K. By using high pulsed fields, a field-induced spin-reorientation is found below 200K. Mössbauer ⁵⁷Fe-spectra are composed of sextets with asymmetrical and broadened lines. The results suggest the presence of competing exchange interactions within the Fe-sublattices in addition to the antiferromagnetic rare-earth-Fe couplings.