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Mini-review: ultra-slow relaxation in frozen-in disordered crystals.

Author(s) : SUGA H.

Type of article: Article

Summary

One category of frozen-in disorder can be observed in undercooled disorderd crystalline phases produced by avoiding a transformation into a stable ordered phase. The other category of freezing process occurs on cooling a disordered crystal before the crystal reaches a hypothetical ordering transition. This arises from slowing down of the relevant motion to achieve the order. The cases of ice and hydrate crystals are described to indicate the freezing processes with ultra-slow relaxations. The freezing may occur without any indications of distinct anomalous behaviour in physical properties and hinders the crystal to realize the most stable phase at low temperatures that satisfies the third law of thermodynamics. This kind of recognition is important particularly in the low temperature experiments which are undertaken generally within a limited time for the consumption of expensive coolants.

Details

  • Original title: Mini-review: ultra-slow relaxation in frozen-in disordered crystals.
  • Record ID : 1998-0599
  • Languages: English
  • Source: Cryo-Letters - vol. 18 - n. 1
  • Publication date: 1997/01
  • Document available for consultation in the library of the IIR headquarters only.

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