Journal Article

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2021-08-01
21:51
Embargoed OpenAccess [FZJ-2021-03150] Journal Article
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Evidence of anomalous conventional and spontaneous exchange bias, high coercivity in Fe doped NiCr2O4 spinel
Dalton transactions 49(14), 4502 - 4517 () [10.1039/D0DT00124D]
NiCr2−xFexO4 (x = 0 and 0.2) polycrystalline ceramics have been synthesized successfully through a simple co-precipitation technique to study the evolution of structural and magnetic properties by doping Fe. X-ray diffraction (XRD) reveals that the high-temperature cubic phase (space group Fd[3 with combining macron]m) observed at 320 K in bulk NiCr2O4 is stabilized at room temperature by decreasing the particle size to nanometer in x = 0 as well as after incorporating 20 at% Fe in the NiCr2O4 lattice. [...]
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2021-07-30
13:32
Embargoed OpenAccess [FZJ-2021-03146] Journal Article
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A high-voltage symmetric sodium ion battery using sodium vanadium pyrophosphate with superior power density and long lifespan
Sodium ion batteries have been considered as promising alternatives to lithium ion batteries for large-scale renewable energy and smart grids applications due to their low cost and rich resources. However, critical drawbacks such as low energy density and poor stability are hindering their development and application. [...]
Published on 2021-07-20. Available in OpenAccess from 2023-07-20.: Download fulltextPDF;

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2021-07-30
09:32
OpenAccess [FZJ-2021-03133] Journal Article
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Single- or double A-site cations in A3Bi2I9 bismuth perovskites: What is the suitable choice?
Investigations on the effect of single or double A-site cation engineering on the photovoltaic performance of bismuth perovskite-inspired materials (A3Bi2I9) are rare. Herein, we report novel single- and double-cation based bismuth perovskite-inspired materials developed by (1) completely replacing CH3NH3+ (methylammonium, MA+) in MA3Bi2I9 with various organic cations such as CH(NH2)2+ (formamidinium, FA+), (CH3)2NH2+ (dimethylammonium, DMA+), C(NH2)3+ (guanidinium, GA+) and inorganic cations such as cesium (Cs+), rubidium (Rb+), potassium (K+), sodium (Na+) and lithium (Li+) and (2) partially replacing MA+ with Cs+ in different stoichiometric ratios. [...]
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2021-07-30
09:01
[FZJ-2021-03130] Journal Article
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Comparing and Quantifying Indoor Performance of Organic Solar Cells
With increasing efficiencies of non-fullerene acceptor-based organic solar cells, thin-film technology is becoming a promising candidate for indoor light harvesting applications. However, the lack of standardized comparison methods makes it difficult to quantify progress and to compare indoor performance. [...]

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2021-07-30
08:26
[FZJ-2021-03127] Journal Article
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Impact of a large artificial lake on regional climate: A typical meteorological year Meso‐NH simulation results
Large artificial lakes and reservoirs affect the meteorological regime of the shore area and the local climate takes on a number of new features that were previously absent. This work focuses on the weather impact of the Alqueva reservoir, the largest artificial lake in Western Europe. [...]

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2021-07-29
10:23
OpenAccess [FZJ-2021-03122] Journal Article
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Chemical characterisation of benzene oxidation products under high- and low-NO<sub><i>x</i></sub> conditions using chemical ionisation mass spectrometry
Aromatic hydrocarbons are a class of volatile organic compounds associated with anthropogenic activity and make up a significant fraction of urban volatile organic compound (VOC) emissions that contribute to the formation of secondary organic aerosol (SOA). Benzene is one of the most abundant species emitted from vehicles, biomass burning and industry. [...]
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2021-07-29
10:19
OpenAccess [FZJ-2021-03121] Journal Article
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Uptake of Water‐soluble Gas‐phase Oxidation Products Drives Organic Particulate Pollution in Beijing
Geophysical research letters 48(8), e2020GL091351 () [10.1029/2020GL091351]
Despite the recent decrease in pollution events in Chinese urban areas, the World Health Organization air quality guideline values are still exceeded. Observations from monitoring networks show a stronger decrease of organic aerosol directly emitted to the atmosphere relative to secondary organic aerosol (SOA) generated from oxidation processes. [...]
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2021-07-29
10:17
OpenAccess [FZJ-2021-03120] Journal Article
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Ubiquitous atmospheric production of organic acids mediated by cloud droplets
Nature <London> 593(7858), 233 - 237 () [10.1038/s41586-021-03462-x]
Atmospheric acidity is increasingly determined by carbon dioxide and organic acids1,2,3. Among the latter, formic acid facilitates the nucleation of cloud droplets4 and contributes to the acidity of clouds and rainwater1,5. [...]
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2021-07-29
10:07
OpenAccess [FZJ-2021-03119] Journal Article
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A European aerosol phenomenology - 7: High-time resolution chemical characteristics of submicron particulate matter across Europe
Similarities and differences in the submicron atmospheric aerosol chemical composition are analyzed from a unique set of measurements performed at 21 sites across Europe for at least one year. These sites are located between 35 and 62°N and 10° W – 26°E, and represent various types of settings (remote, coastal, rural, industrial, urban). [...]
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2021-07-29
08:51
OpenAccess [FZJ-2021-03114] Journal Article
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Added value of geophysics-based soil mapping in agro-ecosystem simulations
Soil 7(1), 125 - 143 () [10.5194/soil-7-125-2021]
There is an increased demand for quantitative high-resolution soil maps that enable within-field management. Commonly available soil maps are generally not suited for this purpose, but digital soil mapping and geophysical methods in particular allow soil information to be obtained with an unprecedented level of detail. [...]
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