A layered hybrid rare-earth double-perovskite-type molecule-based compound with electrical and optical response properties

2020 ◽  
Vol 8 (46) ◽  
pp. 16349-16353
Author(s):  
Miao-Miao Hua ◽  
Le Ye ◽  
Qin-Wen Wang ◽  
Jia-Jun Ma ◽  
Zhi-Xin Gong ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Rare Earth ◽  
High Temperature ◽  
High Efficiency ◽  
Double Perovskite ◽  
Optical Response ◽  
Response Properties ◽  
Type Molecule ◽  
Perovskite Type

An excellent high-temperature switchable dielectric constant and high-efficiency photoluminescence have been realized in (3HQ)4[RbEu(NO3)8] (3HQ = 3-quinuclidinone cation).

scholarly journals Original Reaction Sequence of Pb(Yb1/2Nb1/2)O3-PbTiO3: Consequences on Dielectric Properties and Chemical Order

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Charlotte Cochard ◽  
Fabienne Karolak ◽  
Christine Bogicevic ◽  
Orland Guedes ◽  
Pierre-Eymeric Janolin
Keyword(s):  
Solid Solution ◽  
Dielectric Constant ◽  
High Temperature ◽  
Dielectric Properties ◽  
Double Perovskite ◽  
Underlying Mechanism ◽  
Relaxor Behavior ◽  
Chemical Order ◽  
High Temperature Synthesis ◽  
End Members

The solid solution [Pb(Yb1/2Nb1/2)O3]1−x-[PbTiO3]xwas synthesized withx≤60%, using several high-temperature techniques as well as room-temperature mechanosynthesis. The high-temperature synthesis reveals a reaction path involving the synthesis first of the end-members before the solid solution. The density and dielectric constant measured on the ceramics prepared from these powders indicate the crucial role of the synthesis technique in the subsequent properties. Mechanosynthesis results in ceramics with higher density and dielectric constant. Identical optimized sintering conditions were then applied to all investigated compositions and the resulting dielectric properties and chemical orders were compared. All polar orders (antiferroelectricity, ferroelectricity, and relaxor behavior) were evidenced. The 1 : 1 chemical order on the B-site of Pb(Yb1/2Nb1/2)O3results in the formation of a double perovskite Pb2YbNbO6, and the superstructures in the X-ray diagrams signing the existence of this order persist up to 30% PbTiO3. The underlying mechanism for substitution of Yb or Nb by Ti is presented.

Protonic SOFCs Using Perovskite-Type Conductors

2014 ◽  
Vol 95 ◽  
pp. 66-71 ◽  
Author(s):  
Hiroo Yugami ◽  
Hisashi Kato ◽  
Fumitada Iguchi
Keyword(s):  
High Temperature ◽  
Solid Oxide Fuel Cells ◽  
Fossil Fuel ◽  
High Efficiency ◽  
High Proton Conductivity ◽  
High Proton ◽  
Global Warning ◽  
Perovskite Type ◽  
Oxide Ion Conductors ◽  
Oxide Ion

High temperature solid oxide fuel cells (SOFCs) have high efficiency and low emissions and contribute to the saving of the fossil fuel and the decreasing of the CO2 emission bringing about the global warning. As concerned about the development of electrolytes, oxide-ion conductors alternative to yttria-stabilized zirconia (YSZ) such as doped CeO2, Sc-SZ and perovskite-type oxides (LaGaO3) etc. have been reported to apply to the intermediate temperature SOFCs (IT-SOFCs).Some of perovskite-type oxides shows high proton conductivity at high temperature and are expected to the electrolyte materials for IT-SOFCs. In this paper we have investigated review the mixed electrical conductivity and the optical absorption spectrum of OH(D)-vibration of LaScO3.We also evaluated its applicability to the electrolyte material for IT-SOFCs by testing the SOFC performance of Pt/LaScO3/Pt single cell configuration.

Rare earth chalcogenide Ce3Te4 as high efficiency high temperature thermoelectric material

2011 ◽  
Vol 98 (22) ◽  
pp. 222110 ◽  
Author(s):  
Xiaochun Wang ◽  
Ronggui Yang ◽  
Yong Zhang ◽  
Peihong Zhang ◽  
Yu Xue
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Thermoelectric Material ◽  
High Efficiency

The Potential of Photoelectrochemical Carbon Sinks

2018 ◽  
Author(s):  
Matthias May ◽  
Kira Rehfeld
Keyword(s):  
Global Warming ◽  
High Temperature ◽  
Greenhouse Gas ◽  
Large Scale ◽  
High Efficiency ◽  
Carbon Sink ◽  
Solar Fuels ◽  
Negative Emissions ◽  
Viable Approach ◽  
Low Sensitivity

Greenhouse gas emissions must be cut to limit global warming to 1.5-2C above preindustrial levels. Yet the rate of decarbonisation is currently too low to achieve this. Policy-relevant scenarios therefore rely on the permanent removal of CO<sub>2</sub> from the atmosphere. However, none of the envisaged technologies has demonstrated scalability to the decarbonization targets for the year 2050. In this analysis, we show that artificial photosynthesis for CO<sub>2</sub> reduction may deliver an efficient large-scale carbon sink. This technology is mainly developed towards solar fuels and its potential for negative emissions has been largely overlooked. With high efficiency and low sensitivity to high temperature and illumination conditions, it could, if developed towards a mature technology, present a viable approach to fill the gap in the negative emissions budget.<br>

The Potential of Photoelectrochemical Carbon Sinks

2018 ◽  
Author(s):  
Matthias May ◽  
Kira Rehfeld
Keyword(s):  
Global Warming ◽  
High Temperature ◽  
Greenhouse Gas ◽  
Large Scale ◽  
High Efficiency ◽  
Carbon Sink ◽  
Solar Fuels ◽  
Negative Emissions ◽  
Viable Approach ◽  
Low Sensitivity

Greenhouse gas emissions must be cut to limit global warming to 1.5-2C above preindustrial levels. Yet the rate of decarbonisation is currently too low to achieve this. Policy-relevant scenarios therefore rely on the permanent removal of CO<sub>2</sub> from the atmosphere. However, none of the envisaged technologies has demonstrated scalability to the decarbonization targets for the year 2050. In this analysis, we show that artificial photosynthesis for CO<sub>2</sub> reduction may deliver an efficient large-scale carbon sink. This technology is mainly developed towards solar fuels and its potential for negative emissions has been largely overlooked. With high efficiency and low sensitivity to high temperature and illumination conditions, it could, if developed towards a mature technology, present a viable approach to fill the gap in the negative emissions budget.<br>

ELEKTRON EQ2

Alloy Digest ◽  
2015 ◽  
Vol 64 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Rare Earth ◽  
High Temperature ◽  
Magnesium Alloy ◽  
North America ◽  
Earth Element ◽  
High Strength ◽  
Heat Treating ◽  
Bend Strength ◽  
Temperature Performance

Abstract Elektron EQ21 is a casting high strength magnesium alloy developed as a heat treatable alloy with rare earth element additions. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive, shear, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: Mg-80. Producer or source: Magnesium Elektron Wrought Products, North America.

ALUCHROM I SE

Alloy Digest ◽  
2001 ◽  
Vol 50 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
High Temperature ◽  
Rare Earth Elements ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Temperature Performance ◽  
Oxidation Resistant

Abstract Aluchrom I SE is an oxidation resistant ferritic stainless steel alloyed with aluminum and rare earth elements. Applications include framework for catalytic automobile muffler systems. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-823. Producer or source: Krupp VDM.

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