Synthesis, structure and piezo-/ferroelectric properties of a novel bismuth-containing ternary complex perovskite solid solution

2017 ◽  
Vol 5 (16) ◽  
pp. 3916-3923 ◽  
Author(s):  
Zenghui Liu ◽  
Alisa R. Paterson ◽  
Hua Wu ◽  
Pan Gao ◽  
Wei Ren ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Solid State Reaction ◽  
High Performance ◽  
Ternary Complex ◽  
Ferroelectric Properties ◽  
Ternary Solid Solution ◽  
Complex Perovskite ◽  
Chemical Mechanisms ◽  
Physical And Chemical

A novel ternary solid solution has been synthesized by solid state reaction in the form of ceramics with compositions across the morphotropic phase boundary (MPB). It exhibits high-performance piezo-/ferroelectric properties whose underlying physical and chemical mechanisms are investigated.

Crystal Structure and Multiferroic Behaviors of Solid Solution (1-y)BiFe(1-x)MnxO3-yBaTiO3

2019 ◽  
Vol 944 ◽  
pp. 526-530
Author(s):  
Mei Mei Wu ◽  
Lin Feng He ◽  
Guo Hai Wei ◽  
Yu Qing Li
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Solid State ◽  
Solid State Reaction ◽  
Ferroelectric Properties ◽  
Hysteresis Loops ◽  
Solid State Reaction Method ◽  
Weak Ferromagnetism ◽  
Reaction Method ◽  
Mn Doping

It is expected that BiFeO3-based materials will have both ferroelectricity and ferromagnetism. (1-y)BiFe(1-x)MnxO3-yBaTiO3 system was prepared using solid state reaction method. The goal of this study is to uncover the impacts of Mn doping and BaTiO3 content on the crystal structure, magnetism and ferroelectric properties. By forming a solid solution with BaTiO3, stable perovskite BiFeO3 was achieved. The rhombohedrally distorted (1-y)BiFe(1-x)MnxO3-yBaTiO3 showed weak ferromagnetism due to the composition of BaTiO3 and the doping of Mn ion. 0.8BiFe0.9Mn0.1O3-0.2BaTiO3 and 0.7BiFe0.9Mn0.1O3-0.3BaTiO3 ceramics exhibited typical P-E hysteresis loops.

scholarly journals Changes in Optical Properties upon Dye–Clay Interaction: Experimental Evaluation and Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 197
Author(s):  
Giorgia Giovannini ◽  
René M. Rossi ◽  
Luciano F. Boesel
Keyword(s):  
Optical Properties ◽  
Hybrid Materials ◽  
High Performance ◽  
Fluorescent Properties ◽  
Chemical Mechanisms ◽  
Strong Electrostatic Interaction ◽  
Potential Applications ◽  
Photochemical Properties ◽  
Physical And Chemical ◽  
The Relationship

The development of hybrid materials with unique optical properties has been a challenge for the creation of high-performance composites. The improved photophysical and photochemical properties observed when fluorophores interact with clay minerals, as well as the accessibility and easy handling of such natural materials, make these nanocomposites attractive for designing novel optical hybrid materials. Here, we present a method of promoting this interaction by conjugating dyes with chitosan. The fluorescent properties of conjugated dye–montmorillonite (MMT) hybrids were similar to those of free dye–MMT hybrids. Moreover, we analyzed the relationship between the changes in optical properties of the dye interacting with clay and its structure and defined the physical and chemical mechanisms that take place upon dye–MMT interactions leading to the optical changes. Conjugation to chitosan additionally ensures stable adsorption on clay nanoplatelets due to the strong electrostatic interaction between chitosan and clay. This work thus provides a method to facilitate the design of solid-state hybrid nanomaterials relevant for potential applications in bioimaging, sensing and optical purposes.

Effect of Temperature on the Structural and Magnetic Properties of Co0.7Zn0.3Fe2O4 Ceramic Prepared from Solid State Reaction

2015 ◽  
Vol 804 ◽  
pp. 38-41
Author(s):  
Pattarinee Klumdoung ◽  
Piyapong Pankaew
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Magnetic Properties ◽  
Solid State ◽  
Solid State Reaction ◽  
Sintering Temperature ◽  
Effect Of Temperature ◽  
Dense Structure ◽  
Paramagnetic Behavior ◽  
Structural And Magnetic Properties

In present study, the Co0.7Zn0.3Fe2O4 ceramic was prepared using solid state reaction. The crystal structure of prepared ceramic indicated as solid solution. The SEM result indicated the dense structure of prepared ceramic as increased sintering temperature. For VSM result of Co0.7Zn0.3Fe2O4 ceramic indicated the super paramagnetic behavior with high magnetization. These results could lead us to the development of Co0.7Zn0.3Fe2O4 ceramic preparation optimized for specific applications.

Synthesis and Characterization of BaTiO3-(Bi0.5Na0.5)TiO3 Solid Solution Based Dielectric Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 1160-1164
Author(s):  
Guo Feng Yao ◽  
Xiao Hui Wang ◽  
Long Tu Li
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Solid State ◽  
Curie Temperature ◽  
Solid Solutions ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
Conventional Solid State Reaction ◽  
Dielectric Ceramics

BaTiO3-(Bi0.5Na0.5)TiO3 (BTBNT) solid solution ceramics with the Curie temperature higher than 150°C were prepared, which were promising for X9R MLCCs application. (Bi0.5Na0.5)TiO3 (BNT) was first synthesized by the conventional solid state reaction and then it was mixed with BaTiO3 (BT) with increasing BNT content from 0 to 12 mol%. BaTiO3-(Bi0.5Na0.5TiO3 solid solutions were obtained after calcining at 1100°C. The structural and dielectric properties of BTBNT and Nb-doped BTBNT ceramics were investigated.

THEORETICAL CALCULATION OF ATOMIC STRAIN ON MECHANICAL ALLOYED METASTABLE INTERMETALLIC

2009 ◽  
Vol 16 (01) ◽  
pp. 157-160
Author(s):  
L. PANG ◽  
J. XU ◽  
J. ZHANG
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Binary System ◽  
Mechanical Alloying ◽  
Theoretical Calculation ◽  
Solid State Reaction ◽  
Lattice Strain ◽  
Electron Theory ◽  
Strain Behavior ◽  
Good Coincidence

Mechanical alloying (MA) has been utilized to synthesize many equilibrium and/or nonequilibrium phases. During the MA process, alloys are formed by the solid-state reaction. Solid solution has been obtained by MA, strain occurs due to the dissolution one component in the binary system. An understanding of the strain in mechanical alloyed Ti – Al , Fe – Al , Ni – Al from the electronic level has remained elusive. In this communication, atomic strain behavior of Ti – Al , Fe – Al , Ni – Al systems is analyzed on the basis of the TFDC (abbreviation of the name of Thomas, Fermi, Dirac, and Cheng) electron theory. Lattice strain of Ti , Fe , Ni , and Al are compared with available experimental results. A very good coincidence was found.

Structural, dielectric and magnetic properties of Pr-, Tb- and Dy-doped (Bi0.95RE0.05)(Fe0.95Mn0.05)O3 ceramics synthesized by solid-state reaction method

2013 ◽  
Vol 03 (04) ◽  
pp. 1350033 ◽  
Author(s):  
Radheshyam Rai ◽  
Shweta Thakur ◽  
M. A. Valente ◽  
Andrei L. Kholkin
Keyword(s):  
Magnetic Properties ◽  
Solid State ◽  
Solid State Reaction ◽  
Magnetic Measurements ◽  
Ferroelectric Properties ◽  
Solid State Reaction Method ◽  
X Ray Diffraction ◽  
Solid State Reaction Technique ◽  
X Ray ◽  
Ceramic Samples

The multiferroic ( Bi 0.95 RE 0.05)( Fe 0.95 Mn 0.05) O 3 (where RE = Pr , Tb and Dy ) has been synthesized using solid-state reaction technique. Effects of Pr , Tb and Dy substitution on the structure, electrical and ferroelectric properties of ( Bi 0.95 RE 0.05)( Fe 0.95 Mn 0.05) O 3 samples have been studied by performing X-ray diffraction, dielectric measurements and magnetic measurements. The crystal structure of the ceramic samples have a monoclinic phase. The vibrating sample magnetometer (VSM) measurement shows a significant change in the magnetic properties of Pr -, Tb - and Dy -doped ( Bi 0.95 RE 0.05)( Fe 0.95 Mn 0.05) O 3. It is seen that coercive field (Hc) and remanent magnetization (Mr) increases for Pr but decreases for Dy and Tb .

Structure and Multiferroic Properties of Bi0.9Y0.1FeO3-PbTiO3 Ceramics

2010 ◽  
Vol 105-106 ◽  
pp. 263-265
Author(s):  
Bao Lin Feng ◽  
Chong Hai Wang ◽  
Chang Ling Zhou ◽  
Cheng Gong Sun ◽  
Zhao Xian Xiong ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Bismuth Ferrite ◽  
Ferroelectric Properties ◽  
Dielectric Constants ◽  
Conventional Solid State Reaction ◽  
Multiferroic Properties ◽  
Ionic Substitution ◽  
Antiferromagnetic Ordering ◽  
Ceramic Samples

Bismuth ferrite, BiFeO3, was an important multiferroic material, which simultaneously exhibited ferroelectric ordering and antiferromagnetic ordering in the bulk form. The solid solutions of Bi0.9Y0.1FeO3 with PbTiO3 were prepared by the conventional solid state reaction. It was clear that in Bi0.9Y0.1FeO3-PbTiO3 solid solution, the structure remined rhobohedral for 85 mole% of Bi0.9Y0.1FeO3, from 80 to 70mole% it were rhobohedral and tetragonal, and below 65 mole%, the structure transformed to tetragonal. The dielectric and ferroelectric properties of the ceramics had been significantly improved by means of ionic substitution of Ti4+ for Fe3+, which reduced the electric conductivity. The dielectric constants of the ceramic samples were enhanced from 84 to 241 and the remnant polarizations were improved from 0.494 to 2.17 μC/cm2.

Synthesis and Characterization of Hf0.5Zr0.5O2 (HZO) Ceramic Target via Modified Solid-State Reaction Method

2021 ◽  
Vol 16 (5) ◽  
pp. 833-837
Author(s):  
Shin Kyu Lee ◽  
Sangmo Kim ◽  
Chung Wung Bark
Keyword(s):  
Solid State ◽  
Data Storage ◽  
Solid State Reaction ◽  
High Performance ◽  
Film Growth ◽  
Random Access ◽  
Solid State Reaction Method ◽  
Operating Characteristics ◽  
Research Attention ◽  
Experimental Realization

Ferroelectric random-access memory (FeRAM) is non-volatile, facilitates data storage via ferroelectricity, and it has attracted research attention as potential data storage means in high-performance computing applications. However, retention and fatigue problems have hampered its commercialization. Recently, the atomically controllable HfO2 FeRAM with high-density-storage capability has been developed. Although HfO2 is compatible with silicon-based fabrication technologies, its experimental realization is yet to be investigated. Thus, in this study, we have synthesized ZrO2-doped HfO2 (also referred to as Hf0.5Zr0.5O2 or HZO) with enhanced operating characteristics via a solid-state reaction and optimized ball-milling process. The HZO ceramic targets are sintered at different temperatures between 1000 °C and 1600 °C, and the influence of the sintering temperature on the HZO target properties is investigated. As observed, the HZO target sintered at 1600 °C optimum for film growth.

In-situ growth of graphene decorations for high-performance LiFePO4 cathode through solid-state reaction

2014 ◽  
Vol 249 ◽  
pp. 311-319 ◽  
Author(s):  
Jing Li ◽  
Li Zhang ◽  
Longfei Zhang ◽  
Weiwei Hao ◽  
Haibo Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
High Performance ◽  
In Situ Growth ◽  
Lifepo4 Cathode

Effects of antiferroelectric substitution on the structure and ferroelectric properties of a complex perovskite solid solution

2020 ◽  
Vol 8 (17) ◽  
pp. 5795-5806
Author(s):  
Zenghui Liu ◽  
Yi Yuan ◽  
Zeng Luo ◽  
Hongyan Wan ◽  
Pan Gao ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Phase Transitions ◽  
Solid Solutions ◽  
Piezoelectric Properties ◽  
Ferroelectric Properties ◽  
Complex Perovskite ◽  
Polar Structure ◽  
Structure Phase ◽  
Piezoelectric Solid

Novel ferro-/piezoelectric solid solutions between bismuth-based perovskite and antiferroelectric material are designed and synthesized and their crystal structure, phase transitions, ferro-/piezoelectric properties and local polar structure are investigated.

Sign in / Sign up

Export Citation Format

Share Document