Microscopic Coexistence of Antiferromagnetic and Spin-Glass States
S. Chillal, M. Thede, F.J. Litterst, S.N. Gvasaliya, T.A. Shaplygina,, S.G. Lushnikov, A. Zheludev
TL;DR
This study reveals that the disordered antiferromagnet extit{P}f extit{N}( extit{P}f extit{N}s) exhibits a microscopic coexistence of antiferromagnetic and spin-glass states, characterized by frozen short-range magnetic fluctuations.
Contribution
It provides experimental evidence of a microscopic coexistence of antiferromagnetic and spin-glass orders in extit{P}f extit{N}( extit{P}f extit{N}s), combining Mössbauer spectroscopy and neutron diffraction.
Findings
Microscopic coexistence of antiferromagnetic and spin-glass states.
Frozen short-range magnetic fluctuations transverse to the long-range order.
Identification of a speromagnet-like phase.
Abstract
The disordered antiferromagnet \pfn (\pfns) is investigated in a wide temperature range by combining M\"ossbauer spectroscopy and neutron diffraction experiments. It is demonstrated that the magnetic ground state is a {\it microscopic} coexistence of antiferromagnetic and a spin-glass orders. This speromagnet-like phase features frozen-in short-range fluctuations of the Fe magnetic moments that are transverse to the long-range ordered antiferromagnetic spin component.
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Taxonomy
TopicsTheoretical and Computational Physics · Metallic Glasses and Amorphous Alloys · Material Dynamics and Properties