scholarly journals Evaluation of the Nanodomain Structure in In-Zn-O Transparent Conductors

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 198
Author(s):  
Javier García-Fernández ◽  
Almudena Torres-Pardo ◽  
Julio Ramírez-Castellanos ◽  
Marta D. Rossell ◽  
José M. González-Calbet
Keyword(s):  
Systematic Study ◽  
Homologous Series ◽  
Structural Features ◽  
Transparent Conductors ◽  
Strain Fields ◽  
K Value ◽  
Atomic Displacements ◽  
Structural Modulation ◽  
Nanodomain Structure ◽  
Structural Strain

The optimization of novel transparent conductive oxides (TCOs) implies a better understanding of the role that the dopant plays on the optoelectronic properties of these materials. In this work, we perform a systematic study of the homologous series ZnkIn2Ok+3 (IZO) by characterizing the specific location of indium in the structure that leads to a nanodomain framework to release structural strain. Through a systematic study of different terms of the series, we have been able to observe the influence of the k value in the nano-structural features of this homologous series. The stabilization and visualization of the structural modulation as a function of k is discussed, even in the lowest term of the series (k = 3). The strain fields and atomic displacements in the wurtzite structure as a consequence of the introduction of In3+ are evaluated.

Selection of Structural Features for the Systematic Study of Guided Wave Propagation and Interaction with Damage

2015 ◽  
Author(s):  
PIERRE-CLAUDE OSTIGUY ◽  
MOHAMMAD SHERAFAT ◽  
DEMARTONNE FRANCA ◽  
NIDHAL BOUSLAMA ◽  
NICOLAS QUAEGEBEUR ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Systematic Study ◽  
Structural Features ◽  
Guided Wave ◽  
Guided Wave Propagation ◽  
Selection Of

Synthesis and characterization of an homologous series of bis(amido)diazadipnictetidines (Pnict = P, As, Sb, Bi)

2001 ◽  
Vol 79 (3) ◽  
pp. 342-348 ◽  
Author(s):  
Neil Burford ◽  
T Stanley Cameron ◽  
Kim-Chung Lam ◽  
Daren J LeBlanc ◽  
Charles LB Macdonald ◽  
...  
Keyword(s):  
Key Words ◽  
General Formula ◽  
Homologous Series ◽  
Spectroscopic Characterization ◽  
Structural Features ◽  
Synthesis And Characterization ◽  
General Reaction ◽  
Coordinative Unsaturation

Spectroscopic and structural features are presented for the first homologous series of diazadipnictetidines, which have the general formula [DipNPnN(H)Dip]2 (Pn = P, As, Sb, Bi; Dip = 2,6-diisopropylphenyl). The compounds are obtained from a general reaction of the corresponding halopnictine with excess LiN(H)Dip, which was previously reported for [DipNBiN(H)Dip]2. However, isolation is improved by the introduction of LiN(H)-t-Bu (at the appropriate stoichiometry) following the addition of LiN(H)Dip. The intermediate steric presence of the Dip substituent is suitable to support the heterocatenate framework for all homologues. This is in contrast to the small substituents (e.g. alkyl), which enable both bis- and tris-amination, and the larger substituent (Mes* = tri-tert-butylphenyl), which can impose coordinative unsaturation (aminoiminopnictine) for the smaller congeners (P and As).Key words: phosphorus, arsenic, antimony, bismuth, phosphazanes, phosphetidines, synthesis, structures, spectroscopic characterization.

Nano- and Microcrystal Investigations of Precipitates, Interfaces and Strain Fields in Ni-Ti-Nb by Various TEM Techniques

2013 ◽  
Vol 738-739 ◽  
pp. 65-71 ◽  
Author(s):  
Dominique Schryvers ◽  
Hui Shi ◽  
Gerardo T. Martinez ◽  
Sandra Van Aert ◽  
Jan Frenzel ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Martensite Plate ◽  
Structural Features ◽  
Present Contribution ◽  
Cast Material ◽  
Strain Fields ◽  
Transformation Temperatures ◽  
The Matrix ◽  
Concentration Changes ◽  
Microscopy Techniques

In the present contribution several advanced electron microscopy techniques are employed in order to describe chemical and structural features of the nano- and microstructure of a Ni45.5Ti45.5Nb9 alloy. A line-up of Nb-rich nano-precipitates is found in the Ni-Ti-rich austenite of as-cast material. Concentration changes of the matrix after annealing are correlated with changes in the transformation temperatures. The formation of rows and plates of larger Nb-rich precipitates and particles is described. The interaction of a twinned martensite plate with a Nb-rich nano-precipitate is discussed and the substitution of Nb atoms on the Ti-sublattice in the matrix is confirmed.

Understanding Precursor Phenomena for the R-Phase Transformation in Ti-Ni-Based Alloys

MRS Bulletin ◽  
2002 ◽  
Vol 27 (2) ◽  
pp. 121-127 ◽  
Author(s):  
Daisuke Shindo ◽  
Yasukazu Murakami ◽  
Takuya Ohba
Keyword(s):  
Phase Transformation ◽  
Diffuse Scattering ◽  
Parent Phase ◽  
Martensitic Transformations ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Displacements ◽  
Transmission Electron ◽  
Critical Issues ◽  
Structural Modulation

AbstractPrecursor phenomena are critical issues for martensitic transformations. In this article, we show recent progress in understanding precursor phenomena to the R-phase transformation, which is important for both fundamentals and applications. Structural modulation in the parent phase was intensively studied by means of detailed analyses of the weak diffuse scattering of electrons with the aid of recently developed energy-filtered transmission electron microscopy coupled with x-ray diffraction. A peculiar domain-like structure, which originates from static transverse atomic displacements in the parent phase, was discovered by virtue of these advanced methods. The characteristics of this structure (e.g., size, shape, and temperature-dependence), as well as its role in the subsequent R-phase transformation, are discussed.

Lillianites and andorites: new life for the oldest homologous series of sulfosalts

2014 ◽  
Vol 78 (2) ◽  
pp. 387-414 ◽  
Author(s):  
E. Makovicky ◽  
D. Topa
Keyword(s):  
Homologous Series ◽  
Structural Features ◽  
Point Of View ◽  
Complex Structures ◽  
Current State ◽  
Natural And Synthetic

AbstractThe current state of the lillianite homologous series is presented, with its two branches − the lillianite branch of the predominantly Pb-Bi-Ag sulfosalts and the andorite branch of predominantly Pb-Sb-Ag sulfosalts. Both the natural and synthetic members are discussed, especially from the structural and compositional point of view and the related, chemically distinct and structurally more complicated members of the series are described. A number of new published, or hitherto unpublished observations is given, together with fairly exhaustive tables of data. Relationships between the complex structures of different ‘andorite’ species and principal structural features of ‘oversubstituted’ As-Sb and Bi-Sb species are discussed. Contrary to many studies of this subject, synthetic phases form an integral part of the paper. It is concluded that research in this long-known homologous series still supplies new interesting phases, especially in the fields of synthetic products and in its andorite branch.

scholarly journals Systematic Study of the Physicochemical Properties of a Homologous Series of Aminobisphosphonates

Molecules ◽  
2012 ◽  
Vol 17 (9) ◽  
pp. 10928-10945 ◽  
Author(s):  
Aino-Liisa Alanne ◽  
Helena Hyvönen ◽  
Manu Lahtinen ◽  
Markku Ylisirniö ◽  
Petri Turhanen ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Systematic Study ◽  
Homologous Series

scholarly journals Incommensurate and Commensurate Structural Modulation in Martensitic Phases of FSMA

2009 ◽  
Vol 635 ◽  
pp. 33-41 ◽  
Author(s):  
Lara Righi ◽  
Franca Albertini ◽  
Antonio Paoluzi ◽  
Simone Fabbrici ◽  
Elena Villa ◽  
...  
Keyword(s):  
Structure Refinement ◽  
Structural Features ◽  
The Other ◽  
Strain Effect ◽  
Powder Diffraction Data ◽  
Ferromagnetic Shape Memory Alloys ◽  
Modulated Structures ◽  
Structural Modulation ◽  
Ferromagnetic Shape Memory ◽  
Unified Description

Magnetic and structural properties in multifunctional FSMA (Ferromagnetic Shape Memory Alloys) belonging to Heusler family are frequently related to the occurrence of structural modulation in martensitic phases. The highest MFIS (Magnetic Field Induced Strain) effect has been observed in Ni-Mn-Ga alloys showing martensitic modulated structures. Depending on the composition, pressure and temperature conditions, this periodic structural distortion, consisting of shuffling of atomic layers along specific crystallographic directions, accompanies the martensitic transformation. Over the years, different modulated martensitic structures have been observed and classified depending upon the periodicity of corresponding superstructure (nM with n=3, 5, 6, 7, 12 etc). On the other hand, it has been demonstrated that in most cases such structural modulation is incommensurate and the crystal structure can be solved by applying superspace approach. The crystallographic representation of different modulated structures, obtained by structure refinement on powder diffraction data, suggests a unified description where every different “nM” periodicity can be straightforwardly represented. It will be presented an overview illustrating structural features of several displacive modulated martensitic lattices. For a specific Ni-Mn-Ga composition, the evolution of structural modulation upon temperature change will be illustrated.

Ancient Greek Writing for Memory

Mnemosyne ◽  
2015 ◽  
Vol 68 (5) ◽  
pp. 750-773 ◽  
Author(s):  
Alessandro Vatri
Keyword(s):  
Systematic Study ◽  
Structural Features ◽  
Primary Sources ◽  
Oral Performance ◽  
Ancient Greek ◽  
Literary Works ◽  
Technical Writers

Throughout antiquity memory played a central role in the production, publication, and transmission of texts. Greek mnemotechnics started developing as early as the 6th century bc and by the 2nd century bc memory established itself as a formal division of rhetoric. Techniques of memorization are described at length in ancient rhetorical or scientific works (such as Aristotle’s De memoria), or alluded to in literary works. The theory of mnemotechnics was concerned with how to learn virtually any text by heart, but there is no systematic discussion of what makes a text intrinsically easy to memorize, nor of how to compose in a memory-friendly manner. However, passing remarks scattered throughout ancient Greek texts show that some awareness existed that certain stylistic and structural features improve the memorability of texts. A systematic study of these primary sources reveals that (a) memorization was not regarded as specifically functional to oral performance alone, and (b) the Greek literary and technical writers consciously looked at the mnemonic advantage of stylistic and structural features only when they wanted to favour the memory of the audience, not that of the performer.

Nanodiamond-Triggered Organization in Fibers of PANI Nanocomposites Produced by Chemical and Electrochemical Routes: Structural Features and Functional characterizations

2012 ◽  
Vol 1452 ◽  
Author(s):  
Emanuela Tamburri ◽  
Valeria Guglielmotti ◽  
Silvia Orlanducci ◽  
Maria Letizia Terranova ◽  
Daniele Passeri ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Systematic Study ◽  
Structural Organization ◽  
Structural Features ◽  
Morphological Features ◽  
Polymeric Matrix ◽  
Mechanical And Thermal Properties ◽  
Detonation Nanodiamond ◽  
Polymerization Mechanism

ABSTRACTWe present some recent results of a systematic study regarding polyaniline-based nanocomposites with detonation nanodiamond as guest component. The peculiar properties of such crystalline nanomaterial not only help in improving the mechanical and thermal properties of the host polymeric matrix, but also influence polymerization mechanism, modifying the morphological features of the polymers. Induced by the nanodiamond presence, the final nanocomposites show a prominent arrangement of polymer segments into tubular forms and a subsequent structural organization suitable for many technological applications.

Sign in / Sign up

Export Citation Format

Share Document