Results 41 to 50 of about 476 (168)

Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating

Nature Communications, 2023
Solid-state control of the thermal conductivity of materials is of exceptional interest for novel devices such as thermal diodes and switches. Here, we demonstrate the ability to continuously tune the thermal conductivity of nanoscale films of La0.5Sr0 ...
Yingying Zhang, William M. Postiglione, Rui Xie, Chi Zhang, Hao Zhou, Vipul Chaturvedi, Kei Heltemes, Hua Zhou, Tianli Feng, Chris Leighton, Xiaojia Wang   +10 more
doaj   +1 more source

Hydration in diluted solutions of brownmillerite extracted from SR cement and synthetic brownmillerite

Cement and Concrete Research
The aim of this study is to investigate the reactivity of ferrites extracted from Sulfate Resisting (SR) Portland cement clinkers, until now often neglected. Industrial materials and synthetic materials have been studied and compared in the whole range of the Al/Fe ratio.
Mériot, Alexis, Gauffinet, sandrine, de Noirfontaine, Marie-Noëlle, Courtial, Mireille, Alloncle, Karen, Izoret, Laurent, Dunstetter, Frédéric   +6 more
openaire   +2 more sources

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

Crystal Structure of the Brownmillerite-Related Phase LaCaCuGaO5. [PDF]

Acta Chemica Scandinavica, 1993
This new compound (a=16.022, b=5.4979, c=5.3366A) has been synthesized. The phase was investigated by means of x-ray powder diffraction and electron microscopy, together with energy dispersive spectrometry analysis. The structure was refined by the Rietveld method using the space group Imcm and a statistical distribution of the La and Ca atoms.
Andrei L. Kharlanov, Ingrid Bryntse, Eugene V. Antipov, Anna V. Luzikova, Jon Brunvoll, Odd Gropen, Michael Greune, Johann Weidlein, Ahmad Nasiri, Yoshito Okada   +9 more
openaire   +1 more source

Outline of a Washing Treatment to Improve Electric Arc Furnace Slag Environmental Behavior

steel research international, Volume 97, Issue 5, Page 2541-2558, May 2026.
This study evaluates a water‐washing treatment for electric arc furnace slag to reduce the leaching of hazardous elements (Cr, Ba, Mo, and V), enabling its reuse. The process effectively decreases leachate concentrations. Using the treated slag as a substitute aggregate in concrete reduces greenhouse gases emissions by 42.5% compared to landfilling ...
Luca Testini, Davide Mombelli, Giovanni Dotelli, Mario Grosso, Carlo Mapelli   +4 more
wiley   +1 more source

Comments to paper by D. Panda et al. on KBiMn2O5

Chemical Physics Impact
The ‘novel’ complex material KBiMn2O5 described in the paper “Structural, morphological, dielectric, and electrical characteristics of a brownmillerite material for electronic devices: KBiMn2O5” written by Debasish Panda, Sudhansu Sekhar Hota & R. N.
Paweł E. Tomaszewski
doaj   +1 more source

The observation of magnetic excitations in a single layered and a bilayered brownmillerite

Journal of Physics: Condensed Matter, 2004
We describe the results of an inelastic neutron scattering measurement of the magnetic excitations in SrCaGaMnO(5+δ), a quasi-two-dimensional compound whose structure consists of layers of MnO(6) octahedra separated by layers of GaO(4) tetrahedra (the brownmillerite structure), and Ca(2.5)Sr(0.5)Mn(2)GaO(8), a bilayered brownmillerite.
Blundell, S, Stride, J, Brooks, M, Steer, C, Nair, S, Battle, P, Rosseinsky, M   +6 more
openaire   +3 more sources

In Situ Structural Evolution of Sr‐Promoted Perovskite Catalysts During Ammonia Decomposition

ChemCatChem, Volume 18, Issue 6, 27 March 2026.
Strontium (Sr)‐promoted lanthanum cobaltite (LaCoO3) perovskites are investigated as highly active catalysts for hydrogen production via ammonia decomposition. The incorporation of Sr2+ promoters enhances the catalytic performance, facilitates controlled cobalt (Co) exsolution, and stabilizes the trigonal lanthanum oxide (La2O3) phase, resulting in ...
Christos Sidiropoulos, Jan Ternieden, Sebastian Leiting, Claudia Weidenthaler   +3 more
wiley   +1 more source

Synthesis of Brownmillerite-type Ca2Fe0.5Co1.5O5 as a Durable Electrocatalyst for Oxygen Evolution Reaction in Neutral Aqueous Solution

Electrochemistry
Green hydrogen production and carbon dioxide electroreduction in neutral aqueous solutions, are key reactions for zero-carbon energy systems. In both cases, the oxygen evolution reaction (OER) is a counter reaction that requires a high overpotential ...
Hiroyuki OKADA, Etsushi TSUJI, Satoshi SUGANUMA, Naonobu KATADA   +3 more
doaj   +1 more source

Elucidating dz2 orbital selective catalytic activity in brownmillerite Ca2Mn2O5

AIP Advances, 2016
3d-orbital filling in transition metal oxide is crucial to govern the catalytic activity in oxygen evolution reduction, nevertheless, it is not fundamentally accessible why specific orbital occupation produces a highest catalytic performance.
Yue Lu, Feng Lu, Zhi Yang, Jie Wu, Hongyun Yu, Xinjian Xie, Jianping Xu, Fangyi Cheng, Jun Chen, Ka Xiong, Hui Liu, Wei-Hua Wang, Jianzhou Zhao, Weichao Wang   +13 more
doaj   +1 more source