Pressure effects on magnetic properties of R(Fe,M)₁₂ single crystals (R=rare earth, M=Ti,Mo)

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• 作者：Kamará ; d ; J. ; Garcí ; a-Landa ; B. ; Mikulina ; O. ; Arnold ; Z. ; Ibarra ; M.R. ; Algarabel ; P.A.
• 关键词：R(Fe ; M)₁₂ ; YFe₁₁Ti ; HoFe₁₁Ti ; DyFe₁₁Ti ; YFe_10.5Mo_1.5 ; ErFe_10.5Mo_1.5 ; Magnetization&mdash ; high pressure ; Rare-earth intermetallics ; Anisotropy&mdash ; magnetocrystalline
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2001
• 期刊代码：31_03048853
• 类别：ph
• 出版时间：May, 2001
• 卷：226
• 期：Part 2
• 页码：1446-1448
• 文件大小：83.7 K

摘要

The saturation magnetization of the RFe₁₁Ti (R=Y,Ho,Dy) and RFe_10.5Mo_1.5 (R=Y,Er) single crystals was measured under high pressure up to 9kbar in the temperature range 5–300K. A reduction of Fe-moment m_Fe under pressure is largely affected by the stabilizing elements Ti or Mo in the isostructural YFe₁₁Ti (dlnm_Fe/dp=−3.4×10⁻³kbar⁻¹) and YFe_10.5 Mo_1.5 (dlnm_Fe/dp=−8.6×10⁻³kbar⁻¹) compounds. The critical field of the first-order magnetization process in HoFe₁₁Ti increases significantly under pressure at 5K. These effects can be ascribed to an increase of hybridization of Fe and Mo d-band under pressure and to an influence of pressure on the 4f-sublattice anisotropy, respectively.