Trends of chemical ordering in Pt-based nanoalloys

2021 ◽  
Vol 141 (1) ◽  
Author(s):  
Alexis Front ◽  
Christine Mottet
Keyword(s):  
Chemical Ordering

Tuning dielectric and magnetic properties of complex perovskites PbB'1/2B"1/2O3 and solid solutions by varying the degree of compositional (chemical) ordering of B' and B" ions

2021 ◽  
Vol 576 (1) ◽  
pp. 29-39
Author(s):  
I. P. Raevski ◽  
S. P. Kubrin ◽  
A. A. Gusev ◽  
A. V. Pushkarev ◽  
N. M. Olekhnovich ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Solid Solutions ◽  
Chemical Ordering ◽  
Complex Perovskites

Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

2005 ◽  
Vol 134 (6) ◽  
pp. 425-429 ◽  
Author(s):  
Ni Zhong ◽  
Wen-long Yao ◽  
Ping-hua Xiang ◽  
Chu-de Feng ◽  
Seiji Kojima
Keyword(s):  
Perovskite Structure ◽  
Relaxor Ferroelectrics ◽  
Chemical Ordering

scholarly journals Dielectric response of BaZrO3/BaTiO3 superlattice

2016 ◽  
Vol 06 (02) ◽  
pp. 1650015 ◽  
Author(s):  
D. Wang ◽  
Z. Jiang
Keyword(s):  
Molecular Dynamic ◽  
First Principles ◽  
Dielectric Response ◽  
Dynamic Approach ◽  
Chemical Ordering ◽  
Out Of Plane

We use the first-principles-based molecular dynamic approach to simulate dipolar dynamics of BaZrO3/BaTiO3 superlattice, and obtain its dielectric response. The dielectric response is decomposed into its compositional, as well as the in-plane and out-of-plane parts, which are then discussed in the context of chemical ordering of Zr/Ti ions. We reveal that, while the in-plane dielectric response of BaZrO3/BaTiO3 superlattice also shows dispersion over probing frequency, it shall not be categorized as relaxor.

Proton irradiation induced chemical ordering in an Al0.3CoFeNi high entropy alloy

2021 ◽  
Vol 119 (16) ◽  
pp. 161907
Author(s):  
Sriswaroop Dasari ◽  
Abhishek Sharma ◽  
Todd A. Byers ◽  
Gary A. Glass ◽  
Srinivasan Srivilliputhur ◽  
...  
Keyword(s):  
Proton Irradiation ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Chemical Ordering

Chemical Ordering and Magnetic Anisotropy in MBE-Grown Co/Pt Multilayers

1993 ◽  
pp. 215-227 ◽  
Author(s):  
R. F. C. Farrow ◽  
C. H. Lee ◽  
R. F. Marks ◽  
G. R. Harp ◽  
M. F. Toney ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Chemical Ordering

Neutron Diffraction Study on the Structure of the Metallic Glass Cu57Zr43

1983 ◽  
Vol 38 (11) ◽  
pp. 1210-1222 ◽  
Author(s):  
P. Lamparter ◽  
S. Steeb ◽  
E. Grallath
Keyword(s):  
Neutron Diffraction ◽  
Metallic Glasses ◽  
Neutron Diffraction Study ◽  
Isotopic Substitution ◽  
Substitution Method ◽  
Chemical Ordering ◽  
Structure Factors ◽  
Theoretical Investigations ◽  
Binary Metallic Glasses ◽  
Scattering Contribution

The structure of amorphous Cu57Zr43 has been investigated by neutron diffraction using the isotopic substitution method with the isotopes 63Cu and 65Cu besides natural Cu. From the scattering contribution of concentration fluctuations to the measured structure factors and from the atomic distances chemical ordering is concluded to exist in amorphous Cu57Zr43. The structural results are compared with previous experimental and theoretical investigations of Cu- Zr- and other binary metallic glasses formed by transition metals. Evidence is given that the topological as well as the chemical short range order is asymmetric in respect to both components in this type of metallic glasses

scholarly journals Surfactant-induced chemical ordering of GaAsN:Bi

2018 ◽  
Vol 113 (21) ◽  
pp. 211602 ◽  
Author(s):  
J. Occena ◽  
T. Jen ◽  
H. Lu ◽  
B. A. Carter ◽  
T. S. Jimson ◽  
...  
Keyword(s):  
Chemical Ordering

Ordered Omega Derivatives in (Zr3Al)-Nb Alloys

1997 ◽  
Vol 481 ◽  
Author(s):  
R. Tewari ◽  
G. K. Dey ◽  
P. Mukhopadhyay ◽  
S. Banerjee ◽  
L. A. Bendersky
Keyword(s):  
Phase Separation ◽  
Isothermal Aging ◽  
Chemical Ordering ◽  
Vacancy Ordering ◽  
Structure Phase ◽  
Lattice Correspondence ◽  
Omega Transformation ◽  
Rapidly Solidified ◽  
Bcc Phase ◽  
Periodic Arrangement

ABSTRACTVarious kinds of phase transformations, viz., spinodal decomposition, omega transformation, precipitation reactions and martensitic transformation can be induced in ternary (Zr3Al) -Nb alloys in conditions far removed from equilibrium. Transformation sequences in alloys containing 3% niobium are described and rationalized in terms of some basic tendencies such as phase separation and chemical ordering in the β (bcc) phase and displacive omega and β to α (hcp) transformations. Microstructures of rapidly solidified alloy showed a distribution of cuboidal (D88 phase) particles in the β matrix. The periodic arrangement of these particles along the <100>β directions was indicative of a spinodal transformation which preceded their formation. The β → D88 transformation could be accomplished by the superimposition of three processes, namely, chemical ordering, lattice collapse akin to ω transformation and vacancy ordering. During isothermal aging the D88 phase transformed into the B82 phase. The observed lattice correspondence and transformation morphology suggested that the D88 to B82 structural change involved the replacement of structural vacancies in the former by zirconium atoms without any reconstitution of the lattice. The evolution of the equilibrium Zr3Al (L12 structure) phase during prolonged aging were also studied.

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