Magnetic field dependence of the spin dynamics in Fe28Cr 72

P. Boni; S. M. Shapiro

doi:10.1088/0953-8984/1/35/011

Magnetic field dependence of the spin dynamics in Fe₂₈Cr ₇₂

P. Boni
, S. M. Shapiro

Paul Scherrer Institut

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The field dependence of the magnetic excitations in the re-entrant spin glass (RSG) Fe₂₈Cr₇₂ is investigated over a wide range of temperatures. The zero-field spin dynamics are anomalous not only in the spin-glass phase but also in the paramagnetic phase. In an applied field (H=8.8 kOe) spin waves are induced at low temperatures with an energy gap g mu _BH approximately=0.1 meV. This observation is in marked contrast with results from Fe_1-xAl_x, where no gap is induced. The results suggest that the ground state of RSG is not unique.

Original language	English
Article number	011
Pages (from-to)	6123-6129
Number of pages	7
Journal	Journal of Physics Condensed Matter
Volume	1
Issue number	35
DOIs	https://doi.org/10.1088/0953-8984/1/35/011
State	Published - 1989
Externally published	Yes

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title = "Magnetic field dependence of the spin dynamics in Fe28Cr 72",

abstract = "The field dependence of the magnetic excitations in the re-entrant spin glass (RSG) Fe28Cr72 is investigated over a wide range of temperatures. The zero-field spin dynamics are anomalous not only in the spin-glass phase but also in the paramagnetic phase. In an applied field (H=8.8 kOe) spin waves are induced at low temperatures with an energy gap g mu BH approximately=0.1 meV. This observation is in marked contrast with results from Fe1-xAlx, where no gap is induced. The results suggest that the ground state of RSG is not unique.",

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T1 - Magnetic field dependence of the spin dynamics in Fe28Cr 72

AU - Boni, P.

AU - Shapiro, S. M.

PY - 1989

Y1 - 1989

N2 - The field dependence of the magnetic excitations in the re-entrant spin glass (RSG) Fe28Cr72 is investigated over a wide range of temperatures. The zero-field spin dynamics are anomalous not only in the spin-glass phase but also in the paramagnetic phase. In an applied field (H=8.8 kOe) spin waves are induced at low temperatures with an energy gap g mu BH approximately=0.1 meV. This observation is in marked contrast with results from Fe1-xAlx, where no gap is induced. The results suggest that the ground state of RSG is not unique.

AB - The field dependence of the magnetic excitations in the re-entrant spin glass (RSG) Fe28Cr72 is investigated over a wide range of temperatures. The zero-field spin dynamics are anomalous not only in the spin-glass phase but also in the paramagnetic phase. In an applied field (H=8.8 kOe) spin waves are induced at low temperatures with an energy gap g mu BH approximately=0.1 meV. This observation is in marked contrast with results from Fe1-xAlx, where no gap is induced. The results suggest that the ground state of RSG is not unique.

UR - https://www.scopus.com/pages/publications/36149036623

U2 - 10.1088/0953-8984/1/35/011

DO - 10.1088/0953-8984/1/35/011

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AN - SCOPUS:36149036623

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 35

M1 - 011

ER -

Magnetic field dependence of the spin dynamics in Fe₂₈Cr ₇₂

Abstract

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