Browsing White, Mary Anne by Title
Now showing items 39-45 of 45
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Thermodynamic Characterization of the Low-Temperature Phase-Transformations in Koh and Kod
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A thermodynamic investigation of dynamical disorder in phase II of CBr4.
CBr4 is an archetypal example of a pseudospherical mol. that can form an orientationally disordered phase (phase I, 320 K < T < 365 K). At lower temps., phase II is the stable phase; although it must be more ordered than ... -
Transport properties of Na8Si46
We report on transport properties of polycrystalline Na8Si46 in the temperature range 10 to 300 K. The compound is a type I clathrate with Na incorporated into polyhedra formed by framework Si atoms. Seebeck coefficient ... -
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Why is there no low-temperature phase transition in NaOH?
Although NaOH and NaOD exhibit parallel polymorphism at high temperatures, NaOD exhibits a low-temperature phase transition to a hydrogen-bonded antiferroelectric phase and no comparable transition has been found in NaOH. ... -
X-ray absorption spectroscopy studies of local structure and electronic properties of NaxSi136 (0 < x < 24) clathrates
We have probed both the local structure and the electronic properties of Na-containing type II Si clathrates by x-ray absorption spectroscopy. The near-edge region of the spectrum is particularly sensitive to the local ...