Long-range vs. short-range ordering in synthetic Cr-substituted goethites

2004 ◽  
Vol 68 (14) ◽  
pp. 3053-3063 ◽  
Author(s):  
Elsa E Sileo ◽  
Aline Y Ramos ◽  
Graciela E Magaz ◽  
Miguel A Blesa
Keyword(s):  
Long Range ◽  
Short Range ◽  
Short Range Ordering

Long-range and short-range ordering in 2D honeycomb-lattice magnet Na2Ni2TeO6

2020 ◽  
Vol 820 ◽  
pp. 153354
Author(s):  
Alexander I. Kurbakov ◽  
Artem N. Korshunov ◽  
Stanislav Yu Podchezertsev ◽  
Mikhail I. Stratan ◽  
Grigory V. Raganyan ◽  
...  
Keyword(s):  
Long Range ◽  
Short Range ◽  
Honeycomb Lattice ◽  
Short Range Ordering

Dislocation Walls in Finite Media: The Case of an Infinite Slab

2001 ◽  
Vol 683 ◽  
Author(s):  
M. Surh ◽  
W. G. Wolfer
Keyword(s):  
Pattern Formation ◽  
Stress Field ◽  
Long Range ◽  
Short Range ◽  
Infinite Medium ◽  
Short Range Ordering ◽  
Infinite Slab ◽  
Tilt Boundaries ◽  
Twist Boundaries ◽  
Dislocation Walls

ABSTRACTThe dislocation microstructure observed in solids exhibits cellular patterns. The interiors of these cells are depleted of dislocations while the walls contain dense bundles including the geometrically necessary dislocations leading to misorientations of the crystal lattice on either side. This clustering is the result of short-range interactions which favor the formation of dislocation dipoles or multipoles and tilt and twist boundaries. While this short-range ordering of dislocations is readily understood, the long-range pattern formation is still being studied. We examine finite tilt boundaries in an infinite medium, a model grain, and a free slab to investigate the conditions for long-range stress interactions. We find that finite tilt walls in a larger medium generally possess a long-range stress field because the local bending at the tilt wall is constrained by the surrounding material.

Long-range and short-range ordering of hydrogen or deuterium atoms in solid solution in yttrium

1987 ◽  
Vol 129 ◽  
pp. 287-295 ◽  
Author(s):  
J.E. Bonnet ◽  
D.K. Ross ◽  
D.A. Faux ◽  
I.S. Anderson
Keyword(s):  
Solid Solution ◽  
Long Range ◽  
Short Range ◽  
Short Range Ordering

Spontaneous Lateral Composition Modulation in III-V Semiconductor Alloys

MRS Bulletin ◽  
1997 ◽  
Vol 22 (7) ◽  
pp. 38-43 ◽  
Author(s):  
J. Mirecki Millunchick ◽  
R.D. Twesten ◽  
S.R. Lee ◽  
D.M. Follstaedt ◽  
E.D. Jones ◽  
...  
Keyword(s):  
Long Range ◽  
High Speed ◽  
Short Range ◽  
Carrier Mobility ◽  
Alloy System ◽  
Semiconductor Alloys ◽  
Chemical Ordering ◽  
Short Range Ordering ◽  
Device Structures ◽  
Long Range Ordering

The application of III-V semiconductor alloys in device structures is of importance for high-speed microelectronics and optoelectronics. These alloys have allowed the device engineer to tailor material parameters such as the bandgap and carrier mobility to the need of the device by altering the alloy composition. When using ternary or quaternary materials, the device designer presumes that the alloy is completely disordered, without any correlation between the atoms on the cation (anion) sublattice. However the thermodynamics of the alloy system often produce material that has some degree of macroscopic or microscopic ordering. Short-range ordering occurs when atoms adopt correlated neighboring positions over distances of the order of a few lattice spacings. This can be manifested as the preferential association of like atoms, as in clustering, or of unlike atoms, as in chemical ordering (e.g., CuPt ordering). Long-range ordering occurs over many tens of lattice spacings, as in the case of phase separation. In either short-range or long-range ordering, the band structure and the crystal symmetry are greatly altered. Therefore it is absolutely critical that the mechanisms be fully understood to prevent ordering when necessary or to exploit it when possible.

scholarly journals Structural basis of long-range to short-range synaptic transition in NHEJ

Nature ◽  
2021 ◽  
Author(s):  
Siyu Chen ◽  
Linda Lee ◽  
Tasmin Naila ◽  
Susan Fishbain ◽  
Annie Wang ◽  
...  
Keyword(s):  
Long Range ◽  
Short Range ◽  
Structural Basis

scholarly journals Comparison of short-range order in irradiated dysprosium titanates

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Roman Sherrod ◽  
Eric C. O’Quinn ◽  
Igor M. Gussev ◽  
Cale Overstreet ◽  
Joerg Neuefeind ◽  
...  
Keyword(s):  
Long Range ◽  
Short Range ◽  
Structural Model ◽  
Ion Irradiation ◽  
Function Analysis ◽  
Ion Beam ◽  
Structural Response ◽  
Heavy Ion ◽  
Range Order ◽  
Radiation Resistant

AbstractThe structural response of Dy2TiO5 oxide under swift heavy ion irradiation (2.2 GeV Au ions) was studied over a range of structural length scales utilizing neutron total scattering experiments. Refinement of diffraction data confirms that the long-range orthorhombic structure is susceptible to ion beam-induced amorphization with limited crystalline fraction remaining after irradiation to 8 × 1012 ions/cm2. In contrast, the local atomic arrangement, examined through pair distribution function analysis, shows only subtle changes after irradiation and is still described best by the original orthorhombic structural model. A comparison to Dy2Ti2O7 pyrochlore oxide under the same irradiation conditions reveals a different behavior: while the dysprosium titanate pyrochlore is more radiation resistant over the long-range with smaller degree of amorphization as compared to Dy2TiO5, the former involves more local atomic rearrangements, best described by a pyrochlore-to-weberite-type transformation. These results highlight the importance of short-range and medium-range order analysis for a comprehensive description of radiation behavior.

Emulation of short-range ordering within the Compound Energy Formalism: Application to the calcite-magnesite solid solution

Calphad ◽  
2019 ◽  
Vol 64 ◽  
pp. 115-125 ◽  
Author(s):  
Xin Liu ◽  
Victor L. Vinograd ◽  
Sergii Nichenko ◽  
Dmitrii A. Kulik ◽  
Xiancai Lu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Short Range ◽  
Compound Energy Formalism ◽  
Short Range Ordering

SHORT-RANGE AND LONG-RANGE ORDER OF TITANIUM IN Ti1+xS2

1977 ◽  
Vol 38 (C7) ◽  
pp. C7-202-C7-206 ◽  
Author(s):  
R. MORET ◽  
M. HUBER ◽  
R. COMÈS
Keyword(s):  
Long Range ◽  
Short Range ◽  
Range Order ◽  
Long Range Order
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