The Role of Coherency Strains on Phase Stability in Li[sub x]FePO[sub 4]: Needle Crystallites Minimize Coherency Strain and Overpotential

2009 ◽  
Vol 156 (11) ◽  
pp. A949 ◽  
Author(s):  
A. Van der Ven ◽  
K. Garikipati ◽  
S. Kim ◽  
M. Wagemaker
Keyword(s):  
Phase Stability ◽  
Coherency Strain ◽  
Coherency Strains

Influence of Mg loss on the phase stability in Mg2X (X = Si, Sn) and its correlation with coherency strain

2021 ◽  
Vol 208 ◽  
pp. 116737 ◽  
Author(s):  
Mohammad Yasseri ◽  
Kunal Mitra ◽  
Aryan Sankhla ◽  
Johannes de Boor ◽  
Eckhard Müller
Keyword(s):  
Phase Stability ◽  
Coherency Strain

scholarly journals The Role of Sodium in Stabilizing Tin-Lead (Sn-Pb) Alloyed Perovskite Quantum Dots

2021 ◽  
Author(s):  
Junke Jiang ◽  
Feng Liu ◽  
Qing Shen ◽  
Shuxia Tao
Keyword(s):  
Quantum Dots ◽  
Phase Stability ◽  
Band Gaps ◽  
Great Promise ◽  
Narrow Bandgap ◽  
Perovskite Quantum Dots ◽  
Optoelectronic Applications

Narrow-bandgap CsSnxPb1-xI3 perovskite quantum dots (QDs) show great promise for optoelectronic applications owing to their reduced use of toxic Pb, improved phase stability, and tunable band gaps in the visible...

Phase Stability and Role of Ternary Additions on Electronic and Mechanical Properties of Aluminum Intermetallics

1990 ◽  
Vol 213 ◽  
Author(s):  
A.J. Freeman ◽  
T. Hong ◽  
W. Lin ◽  
Jian-Hua Xu
Keyword(s):  
Mechanical Properties ◽  
Phase Stability ◽  
First Principles ◽  
Local Density ◽  
Electronic Charge ◽  
Intermetallic Alloys ◽  
Phase Boundaries ◽  
Bonding Properties ◽  
Ternary Additions

ABSTRACTFirst principles total energy local density method have addressed the problems of (i) bonding, cohesion and phase stability and (ii) the role of ternary additions, anti-phase boundaries (APB's) and other faults in determining the structural, electronic and mechanical properties of aluminum intermetallic alloys. A key goal has been to attempt to understand, at the electronic level, fundamental quantities that may be related to the crucial brittleness vs. ductility issue in high temperature Ni and Ti and other aluminides. Other contrasts between observed ductility properties of related systems (e.g., NiAl and RuAl) are related to their differing electronic and bonding properties, particularly the nature of p-d hybridization and the directional properties of their electronic charge distrubutions - especially for states near the Fermi energy.

The Role of Phase Stability in Ductile, Ordered B2 Intermetallics

2006 ◽  
Vol 980 ◽  
Author(s):  
James R. Morris ◽  
Yiying Ye ◽  
Maja Krcmar ◽  
Chong Long Fu
Keyword(s):  
Phase Stability ◽  
First Principles ◽  
Tensile Ductility ◽  
Stacking Faults ◽  
Low Energy ◽  
First Principles Calculations ◽  
Phase Competition ◽  
Transformation Pathway ◽  
Shape Memory Materials

AbstractWe discuss the underlying atomistic mechanism for experimentally observed large tensile ductility in various strongly ordered B2 intermetallic compounds. First-principles calculations demonstrate that all of the compounds exhibit little energy differences between the B2, B27 and B33 phases. These calculations relate observations of ductility in YAg, YCu and ZrCo to shape-memory materials including NiTi. One transformation pathway between the B2 and B33 phases establishes a connection between this phase competition, and stacking faults on the {011}B2 plane. The low energy of such a stacking fault will lead to splitting of the b=<100> dislocations into b/2 partials, observed in ZrCo, TiCo, and in the B19' phase of NiTi. Calculations demonstrate that this pathway is competitive with the traditional pathway for NiTi.

Magnetic Anisotropy of Crystalline Defects

1991 ◽  
Vol 231 ◽  
Author(s):  
B.M. Clemens ◽  
R.L. White ◽  
W.D. Nix ◽  
J.A. Bain
Keyword(s):  
Film Thickness ◽  
Magnetic Anisotropy ◽  
Strain Field ◽  
Coherency Strain ◽  
Misfit Dislocations ◽  
Surface Anisotropy ◽  
Crystalline Defects ◽  
Preferred Direction ◽  
Coherency Strains

AbstractWe consider the anisotropies due to coherency strains and the inilioliogcliotis stratlus associated with misfit dislocations, both of which give rise to anisotropy through maguctostrictive coupling. Coherency strains can give rise to anl apparent surface anisotrnpy due to the decrease in coherency strain with the film thickness. This anisotropy is comparable in magnitude to that observed experimentally for Fe [110] epitaxial thiut films on W [110]. The strain field associated with misfit dislocations produces a. surface anisotropy which is also comparable in magnitude to experimentally observed anisotropies. Dislocatioms along the inplane [001] and [110] directions both produce the same preferred direction of maguctization orientation.

The surprising role of magnetism on the phase stability of Fe (Ferro)

Calphad ◽  
2009 ◽  
Vol 33 (1) ◽  
pp. 3-7 ◽  
Author(s):  
Thaddeus B. Massalski ◽  
David E. Laughlin
Keyword(s):  
Phase Stability

scholarly journals Unexpected role of linker position on ammonium gemini surfactant lyotropic gyroid phase stability

Soft Matter ◽  
2016 ◽  
Vol 12 (8) ◽  
pp. 2408-2415 ◽  
Author(s):  
Gregory P. Sorenson ◽  
Mahesh K. Mahanthappa
Keyword(s):  
Phase Stability ◽  
Gemini Surfactant ◽  
Phase Behaviors

The aqueous lyotropic phase behaviors of homologous gemini bis(ammonium) surfactants demonstrate that the linker location impacts the gyroid phase stability.

The Role of Carbon in the Phase Stability of 3Y-TZP at Low Temperatures

2003 ◽  
Vol 233-236 ◽  
pp. 655-660 ◽  
Author(s):  
Zhen Bo Zhao ◽  
Cheng Liu ◽  
Derek O. Northwood
Keyword(s):  
Phase Stability ◽  
Low Temperatures
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