Results 11 to 20 of about 798 (168)

Revival of Layered Ferroelectrics in Thin Films. [PDF]

Small Sci
This review presents recent advances in layered perovskite‐based ferroelectric thin films, showing how progress in deposition and characterization now enables atomic‐precision synthesis across the Aurivillius, Carpy–Galy, Ruddlesden–Popper, and Dion–Jacobson families.
Gradauskaite E.
europepmc   +2 more sources

An Equatorial Hemispheric Barrier Shapes the Diversification of Migratory Belenois Butterflies. [PDF]

Mol Ecol
ABSTRACT Biogeographic barriers are typically considered prominent geographic features that block or severely restrict dispersal and gene flow. However, mating barriers can also emerge within continuous suitable habitats, driven by ecological or behavioural constraints. Migratory insects show an extraordinary capacity to traverse vast geographic ranges,
Janiczek A, Palahí A, Dapporto L, Díaz-Martínez G, Nazari V, García-Berro A, Bahleman F, Collins SC, Akite P, Braby MF, Backström N, Vila R, Suchan T, Talavera G.   +13 more
europepmc   +2 more sources

Triggered Ferroelectricity in HfO₂ From Hybrid Phonons and Higher-Order Dynamical Charges. [PDF]

Adv Mater
We combine first‐principles calculations, LGD theory and group theory to demonstrate the mechanism of hybrid‐triggered ferroelectricity in HfO2${\rm HfO}_2$, enabled by trilinear and quadlinear couplings between stable polar and nonpolar modes. HfO2${\rm HfO}_2$ hosts unconventional interplay between structure modes where substantial contribution to ...
Jung S, Birol T.
europepmc   +2 more sources

On the possible formation of Aurivillius phases in the oxide system Bi2O3-ZnO-Nb2O5 [PDF]

Journal of the Serbian Chemical Society, 2004
This paper presents results concerning the possible synthesis of double perovskite and Aurivillius phases in the BZN system. Acrystal chemical criterion based on an elastic model for the structure was used in order to determine if the formation of ...
Rusu Iulian, Craus Mihail-Liviu, Sutiman Daniel, Rusu Alice   +3 more
doaj   +1 more source

EVOLUTION AND CHARACTERIZATIONS OF AURIVILLIUS BISMUTH TITANATE BY MODIFIED SOLID STATE PROCESSING

The Journal of Engineering Research, 2019
Mild agate mortar activation followed by sintering of precursors, in resemblance to modified solid state process, was studied for synthesis of the aurivillius bismuth titanate. Hand on mill activation was carried out for eight hours followed by annealing
Mohammed Shahnawaz, Suman Khan, Soumya Mukherjee   +2 more
doaj   +1 more source

Sintesis Senyawa Aurivillius Ca1-xBi3,5+xLa0,5Ti4-xMnxO15: Struktur dan Sifat Dielektrik

Alchemy, 2018
Sintesis senyawa feroelektrik yang berbasis fasa Aurivillius berlapis empat (n = 4) yang didadah kation La3+ dan Mn3+, Ca1-xBi3,5+xLa0,5Ti4-xMnxO15 dengan x = 0, 0,2, 0,4, 0,6, 0,8, dan1 telah dilakukan dengan teknik lelehan garam.
Zulhadjri Zulhadjri, Rini Ramadhani, Aulia Arivin Billah, Syukri Arief, Emriadi Emriadi   +4 more
doaj   +1 more source

SYNTHESIS AND DIELECTRIC PROPERTIES OF FOUR-LAYERED AURIVILLIUS SrBi4Ti4O15 DOPED Nd3+ AND Mn4+

Alchemy, 2016
Synthesis of four-layered Aurivillius compound doped with Nd3+ and Mn4+ cations, SrBi3.5Nd0.5Ti4-xMnxO15 (x = 0; 0.5; 1) was carried out using molten salt method with a mixture of Na2SO4/K2SO4 as a flux.
Sestry Misfadhila, Evi Adhelina, Yestria Rilda, Syukri Arief, Zulhadjri Zulhadjri   +4 more
doaj   +1 more source

Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)

Journal of Advanced Dielectrics, 2021
The electrophysical and structural characteristics of bismuth titanate oxides of a number of phases of solid solutions of the Aurivillius phases Bi7−2xNd2xTi4NbO21 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) having a layered structure of the perovskite type have ...
S. V. Zubkov
doaj   +1 more source

Extended Near-Infrared Photoactivity of Bi6Fe1.9Co0.1Ti3O18 by Upconversion Nanoparticles

Nanomaterials, 2018
Bi6Fe1.9Co0.1Ti3O18 (BFCTO)/NaGdF4:Yb3+, Er3+ (NGF) nanohybrids were successively synthesized by the hydrothermal process followed by anassembly method, and BFCTO-1.0/NGF nanosheets, BFCTO-1.5/NGF nanoplates and BFCTO-2.0/NGF truncated tetragonal ...
Wen Ge, Zhiang Li, Tong Chen, Min Liu, Yalin Lu   +4 more
doaj   +1 more source

Aurivillius BaBi4Ti4O15 based compounds: Structure, synthesis and properties [PDF]

Processing and Application of Ceramics, 2014
The discovery of some Aurivillius materials with high Curie temperature or fatigue-free character suggests possible applications in high temperature piezoelectric devices or non-volatile ferroelectric random access memories.
Jelena D. Bobić, Mirjana M. Vijatović Petrović, Biljana D. Stojanović   +2 more
doaj   +1 more source