منابع مشابه
Orientational ordering in solid hydrogen
2014 The phenomen of orientational ordering in solid hydrogen is studied as a function of the concentration X of the J = 1 species using Kirkwood’s technique of restricted traces. Calculations of the critical temperatures as a function of X demonstrate a behaviour in qualitative agreement with the experimental observation that a long range orientation order cannot be maintained in samples for w...
متن کاملQuadrupolar glass ordering in solid deuterium
2014 Measurements of the NMR absorption line shapes have been used to establish the phase diagram for orientational ordering of the J = 1 molecules in solid mixtures of paradeuterium (J = 1) and orthodeuterium (J = 0) for para concentrations 42 X 75 % and temperatures 0.035 T 2.5 K. As in solid hydrogen, we observe three phases : a rotationally disordered phase, a long range orientationally ord...
متن کاملOrganic chemistry: solid awakening.
: C O d Indeed, its very existence also has implications for tackling much broader questions about how intracellular parasites evolved from algae, and whether the single origin of these plastids can be pushed even farther back in time to explain the origin of an even greater diversity of complex algae with red algal plastids, as proposed by the ‘chromalveolate hypothesis’. The discovery of an o...
متن کاملSolid State Inorganic Chemistry
We aim to understand and exploit the factors (strain, composition, band structure etc.) that determine structure and function in the crystalline solid state. Our interest is in the balance between local crystal chemistry, strain and longer range order in a wide range of compositionally and/or displacively flexible crystalline solids. The principal experimental research tools used are solid stat...
متن کاملOrientational ordering of icosahedra in solid C60.
We determine the allowed structures for orientationally ordered icosahedral molecules on a fcc lattice such that there are four molecules per simple-cubic unit cell. The allowed space groups are Pm3, Pn3, and Pa3. In the latter two, an angle of rotation assumes a value not fixed by symmetry. The locations of all 240 atoms in the unit cell as deduced from the powder x-ray data of Heiney et al. a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2011
ISSN: 0108-7673
DOI: 10.1107/s0108767311095201