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arXiv · 1306.0416

Phase transition in a super superspin glass

R. Mathieu·J. A. De Toro·D. Salazar·S. S. Lee·J. L. Cheong·P. Nordblad
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Abstract

We here confirm the occurrence of spin glass phase transition and extract estimates of associated critical exponents of a highly monodisperse and densely compacted system of bare maghemite nanoparticles. This system has earlier been found to behave like an archetypal spin glass, with e.g. a sharp transition from paramagnetic to non-equilibrium behavior, suggesting that this system undergoes a spin-glass phase transition at a relatively high temperature, $T_g$ $\sim$ 140 K.

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R. Mathieu, J. A. De Toro, D. Salazar, S. S. Lee, J. L. Cheong, P. Nordblad. 2013-06-03. Phase transition in a super superspin glass. https://doi.org/10.1209/0295-5075/102/67002

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