نتایج جستجو برای: abo3
تعداد نتایج: 162 فیلتر نتایج به سال:
Crystal structure and Mössbauer effect in multiferroic 0.5BiFeO3-0.5Pb(Fe0.5Ta0.5)O3 solid solution
Materials that exhibit ferromagnetic and ferroelectric ordering in the same phase are named magnetoelectrics, which are part of a larger group of multiferroics. Multiferroics possess at least two ferroic orderings at the same time. Magnetoelectric materials are characterized by a strong coupling between the magnetic and electric subsystems, which means that the magnetic fi eld is able to induce...
The site-incorporation mechanism of M dopants into ABO3 perovskites controls the overall defect chemistry and thus their transport properties. For charge-balance reasons, incorporation onto the A-site would require the creation of negatively charged point defects (such as cation vacancies), whereas incorporation onto the B-site is accompanied by the generation of positively charged defects, typ...
The local atomic structure of high performance piezoelectric materials is currently being investigated computationally. These materials are expected to play an important role in the next generation of sensors and actuators, used for example, in aircraft for active vibration and noise control. Many sensors and actuators are composed of piezoelectric materials, since they can transform mechanical...
Multilayer ceramic capacitor (MLCC) production and sales figures are the highest among fine-ceramic products developed in the past 30 years. The total worldwide production and sales reached 550 billion pieces and 6 billion dollars, respectively in 2000. In the course of progress, the development of base-metal electrode (BME) technology played an important role in expanding the application area....
This article focuses on perovskite materials for application as cathode material in solid oxide fuel cells. In order to develop new promising materials it is helpful to classify already known perovskite materials according to their properties and to identify certain tendencies. Thereby, composition-dependent structural data and materials properties are considered. Structural data under consider...
Recently, strain engineering has been shown to be a powerful and flexible means of tailoring the properties of ABO3 perovskite thin films. The effect of epitaxial strain on the structure of the perovskite unit cell can induce a host of interesting effects, these arising from either polar cation shifts or rotation of the oxygen octahedra, or both. In the multi-ferroic perovskite bismuth ferrite ...
Through an extensive literature review the cation substitution effect on multiferroic behavior of BiFeO3 commonly known as BFO has been analyzed. A deep introspection made to find doping its structural, micro structural and electrical microstructure which consequently changes dielectric, ferroelectric, magnetic, other properties. systematic analysis how at both B site ABO3 perovskite structure ...
نانوساختارهای پروسکایتی LaNi0.6Fe0.4O3 و LaNiO3 از طریق روش سل-ژل پلیمری و با بکارگیری نیترات‌ها، اسید سیتریک و اتیلن گلیکول به عنوان پیش ماده بدست آمدند. تجزیه حرارتی نانوپودرهای حاصله با استفاده از آزمایشآنالیز حرارتی افتراقی و توزین حرارتی انجام گرفت. فازهای موجود در آن با کمک پراش اشعه ایکس و خواص ریزساختاری آن توسط میکروسکوپ الکترونی روبشی بررسی شد. تشخیص و بررسی مورفولوژی پودر و همچنین ا...
High performance piezoelectric materials are expected to play an important role in the next generation of sensors and actuators, used for example, in aircraft for active vibration and noise control. Piezoelectric materials can transform mechanical to electrical energy (and vice versa). The goal of this study is to understand how the local atomic structure is related to piezoelectric properties....
Controlling oxygen content in perovskite oxides with ABO3 structure is one of most critical steps for tuning their functionality. Notably, there have been tremendous efforts to understand the effect of changes in oxygen content on the properties of perovskite thin films that are not composed of cations with multiple valance states. Here, we study the effect of oxygen vacancies on structural and...
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