Memory and rejuvenation in a quasicrystal

The glassy features of a single crystal of the icosahedral quasicrystal i-GdCd7.5 were investigated by means of squid magnetometry. The temperature-dependent zero-field-cooled magnetization was recorded on re-heating from low temperatures after halts in the cooling. The results evidence dynamical fe...

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Bibliographic Details
Published in:	Europhysics letters Vol. 132; no. 2; pp. 27002 - 27006
Main Authors:	Joshi, D. C., Gebresenbut, G., Pay Gomez, C., Mathieu, R.
Format:	Journal Article
Language:	English
Published:	Les Ulis EDP Sciences, IOP Publishing and Società Italiana di Fisica 01-10-2020 IOP Publishing
Subjects:	Aging (metallurgy) Low temperature Magnetic measurement Quasicrystals Single crystals Spin glasses Superconducting quantum interference devices Temperature dependence
Online Access:	Get full text
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Summary:	The glassy features of a single crystal of the icosahedral quasicrystal i-GdCd7.5 were investigated by means of squid magnetometry. The temperature-dependent zero-field-cooled magnetization was recorded on re-heating from low temperatures after halts in the cooling. The results evidence dynamical features akin to those of archetypal spin glasses, such as aging, memory, and rejuvenation. The results are compared to those of model spin glasses with different spin dimensionality, suggesting a qualitative similarity to the behaviour of metallic RKKY "Heisenberg" spin glasses.
ISSN:	0295-5075 1286-4854 1286-4854
DOI:	10.1209/0295-5075/132/27002