scholarly journals Possible bicollinear nematic state with monoclinic lattice distortions in iron telluride compounds

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Christopher B. Bishop ◽  
Jacek Herbrych ◽  
Elbio Dagotto ◽  
Adriana Moreo
Keyword(s):  
Nematic State ◽  
Monoclinic Lattice ◽  
Iron Telluride ◽  
Lattice Distortions

scholarly journals Irradiation Behaviors in BCC Multi-Component Alloys with Different Lattice Distortions

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 706
Author(s):  
Yue Su ◽  
Songqin Xia ◽  
Jia Huang ◽  
Qingyuan Liu ◽  
Haocheng Liu ◽  
...  
Keyword(s):  
Single Phase ◽  
Vacuum Arc ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Chemical Complexity ◽  
Arc Melting ◽  
Vacuum Arc Melting ◽  
Lattice Distortions ◽  
Face Centered ◽  
Displacement Per Atom

Recently, the irradiation behaviors of multi-component alloys have stimulated an increasing interest due to their ability to suppress the growth of irradiation defects, though the mostly studied alloys are limited to face centered cubic (fcc) structured multi-component alloys. In this work, two single-phase body centered cubic (bcc) structured multi-component alloys (CrFeV, AlCrFeV) with different lattice distortions were prepared by vacuum arc melting, and the reference of α-Fe was also prepared. After 6 MeV Au ions irradiation to over 100 dpa (displacement per atom) at 500 °C, the bcc structured CrFeV and AlCrFeV exhibited significantly improved irradiation swelling resistance compared to α-Fe, especially AlCrFeV. The AlCrFeV alloy possesses superior swelling resistance, showing no voids compared to α-Fe and CrFeV alloy, and scarce irradiation softening appears in AlCrFeV. Owing to their chemical complexity, it is believed that the multi-component alloys under irradiation have more defect recombination and less damage accumulation. Accordingly, we discuss the origin of irradiation resistance and the Al effect in the studied bcc structured multi-component alloys.

scholarly journals Magnetocaloric effect and spin-strain coupling in the spin-nematic state of LiCuVO4

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
M. Gen ◽  
T. Nomura ◽  
D. I. Gorbunov ◽  
S. Yasin ◽  
P. T. Cong ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Nematic State ◽  
Strain Coupling

Crystal structure of donepezil hydrochloride form III, C24H29NO3⋅HCl

2021 ◽  
pp. 1-8
Author(s):  
Joel W. Reid ◽  
James A. Kaduk
Keyword(s):  
Crystal Structure ◽  
Density Functional Theory ◽  
Powder Diffraction ◽  
Density Functional ◽  
Chloride Anion ◽  
Powder Diffraction Data ◽  
Powder Diffraction File ◽  
Functional Theory ◽  
Monoclinic Lattice ◽  
Donepezil Hydrochloride

The crystal structure of donepezil hydrochloride, form III, has been solved with FOX using laboratory powder diffraction data previously submitted to and published in the Powder Diffraction File. Rietveld refinement with GSAS yielded monoclinic lattice parameters of a = 14.3662(9) Å, b = 11.8384(6) Å, c = 13.5572(7) Å, and β = 107.7560(26)° (C24H30ClNO3, Z = 4, space group P21/c). The Rietveld-refined structure was compared to a density functional theory (DFT)-optimized structure, and the structures exhibit excellent agreement. Layers of donepezil molecules parallel to the (101) planes are maintained by columns of chloride anions along the b-axis, where each chloride anion hydrogen bonds to three donepezil molecules each.

scholarly journals Mg2+ storage and mobility in anatase TiO2: the role of frustrated coordination

2019 ◽  
Vol 7 (8) ◽  
pp. 3704-3713 ◽  
Author(s):  
Kit McColl ◽  
Furio Corà
Keyword(s):  
Anatase Tio2 ◽  
Migration Barriers ◽  
Lattice Distortions

Low migration barriers of ∼540 meV allow good Mg mobility under dilute conditions, but cooperative lattice distortions limit mobility at high Mg concentrations.

The dislocations contrast factors of cubic crystals in the Zener constant range between zero and unity

2002 ◽  
Vol 17 (2) ◽  
pp. 104-111 ◽  
Author(s):  
I. C. Dragomir ◽  
T. Ungár
Keyword(s):  
Elastic Constants ◽  
Elastic Anisotropy ◽  
Profile Analysis ◽  
Anisotropy Constant ◽  
Diffraction Peak ◽  
Polycrystalline Materials ◽  
Ionic Crystals ◽  
Strain Anisotropy ◽  
Cubic Crystals ◽  
Lattice Distortions

Diffraction peak profiles broaden due to the smallness of crystallites and the presence of lattice defects. Strain broadening of powders of polycrystalline materials is often anisotropic in terms of the hkl indices. This kind of strain anisotropy has been shown to be well interpreted assuming dislocations as one of the major sources of lattice distortions. The knowledge of the dislocation contrast factors are inevitable for this interoperation. In a previous work the theoretical contrast factors were evaluated for cubic crystals for elastic constants in the Zener constant range 0.5≤Az≤8. A large number of ionic crystals and many refractory metals have elastic anisotropy, Az, well below 0.5. In the present work the contrast factors for this lower anisotropy-constant range are investigated. The calculations and the corresponding peak profile analysis are tested on ball milled PbS and Nb and nanocrystalline CeO2.

scholarly journals Collective phase-like mode and the role of lattice distortions atTN∼TCin RMn2O5(R= Pr, Sm, Gd, Tb, Bi)

2012 ◽  
Vol 24 (19) ◽  
pp. 195901 ◽  
Author(s):  
Néstor E Massa ◽  
Ali F García-Flores ◽  
Domingos De Sousa Meneses ◽  
Leire del Campo ◽  
Patrick Echegut ◽  
...  
Keyword(s):  
Lattice Distortions

Brillouin zone of a base-centered monoclinic lattice

1974 ◽  
Vol 17 (7) ◽  
pp. 934-938 ◽  
Author(s):  
M. P. Ruzaikin ◽  
N. V. Kudryavtseva
Keyword(s):  
Brillouin Zone ◽  
Monoclinic Lattice
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