Local Spin Configurations of Fe Atoms in Microinhomogeneous PdMnxFe1-x Alloys

V.V. Serikov; N.M. Kleinerman; N.V. Volkova; N.I. Kourov

doi:10.4028/www.scientific.net/SSP.152-153.49

Paper Titles

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Spontaneous and Field-Induced Magnetic Phase Transitions in Tb_1-xR_xMn₆Sn₆ (R = Gd, Y) Compounds
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Role of Electronic Band Structure and Lattice Parameters in Magnetism of the R₂(Fe,M)₁₇, М = Si, Al Compounds
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Magnetic Phase Diagram and Charge Transport in TmB12
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Local Spin Configurations of Fe Atoms in Microinhomogeneous PdMn_xFe_1-x Alloys
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Features of the Post-Deformation Hardening of Fe-Cr-Co Hard Magnetic Alloys with W and Ga Additives
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Temperature Dependence of Magnetization of Lu₂Fe₁₇ Compound in Different Structural States
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Magnetic Properties of RFe₉Ti Single Crystals with ThMn₁₂ Structure
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Microstructure Evolution upon Thermomagnetic Treatment of Soft Magnetic Alloys
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Local Spin Configurations of Fe Atoms in Microinhomogeneous PdMn_xFe_1-x Alloys

Abstract:

The Mössbauer spectra of PdMnxFe1-x alloys obtained at 80 K and at 300 K were studied in the 0.2 < x < 0.8 concentration range, in which there realizes a microinhomogeneous multiphase medium formed by isostructure phases of the constituent compositions: ferromagnetic PdFe (ТС=730 К) alloy undergoing atomic ordering and antiferromagnetic PdMn (TN=815 К) intermetallic compound. Magnetic properties studies evidence the presence of a third presumably noncollinear phase with its own ordering temperature lying below the Curie temperature of the ferromagnetic phase in the 0.2 < x < 0.8 concentration range. The Mössbauer spectra at 300 K exhibit a doublet for antiferromagnetic alloys (x > 0.8) and a sextet at Hhf ~350 kOe for ferromagnetic alloys (x < 0.2). In the intermediate concentration range several peaks 0 < Hhf < 350 kOe have been observed in the P(Hhf) curves, which result from microinhomogeneous multiphase state.