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La$_2$NiO$_{4+\delta}$ has attracted increasing interest in recent years, both as oxygen electrode in solid oxide fuel cells and electrolysers due to its high electrochemical activity at intermediate to high temperatures, and as key…

Materials Science · Physics 2025-07-03 Adeel Riaz , Alexander Stangl , Mónica Burriel , Michel Mermoux

For the past two and a half decades, anomalous heating of trapped ions from nearby electrode surfaces has continued to demonstrate unexpected results. Caused by electric-field noise, this heating of the ions' motional modes remains an…

Atomic Physics · Physics 2021-10-05 D. A. Hite , K. S. McKay , D. P. Pappas

We present a study on the crystallization process of undoped and Ta doped TiO2 amorphous thin films. In particular, the effect of ultra-fast annealing treatments in environments characterized by different oxygen concentrations is…

We demonstrate cryogenic buffer-gas cooling of gas-phase methyltrioxorhenium (MTO). This molecule is closely related to chiral organometallic molecules where the parity-violating energy differences between enantiomers may be measurable. The…

Atomic Physics · Physics 2017-09-07 Sean Tokunaga , R. J. Hendricks , M. Tarbutt , B Darquié

Using the first-principles calculations, we report the existence of the single-layer (SL) di-titanium oxide Ti$_2$O (labeled as MOene) that constructs a novel family of MXene based on transition metal oxides. This MOene material strongly…

Materials Science · Physics 2020-10-29 Luo Yan , Tao Bo , Bao-Tian Wang , Sergei Tretiak , Liujiang Zhou

We demonstrate a novel route to prepare thin films of the ferromagnetic insulator Europium monoxide. Key is a redox-controlled interface reaction between metallic Eu and the substrate SrTiO$_3$ as the supplier of oxygen. The process allows…

Materials Science · Physics 2019-06-26 Patrick Lömker , Martina Müller

High-entropy oxide (HEO) thermodynamics transcend temperature-centric approaches, spanning a multidimensional landscape where oxygen chemical potential plays a decisive role. Here, we experimentally demonstrate how controlling the oxygen…

A boron-oxide termination of the diamond (100) surface has been formed by depositing molecular boron oxide $\rm{B_2O_3}$ onto the hydrogen-terminated (100) diamond surface under ultrahigh vacuum conditions and annealing to $\rm{950^{\circ}…

Materials Science · Physics 2024-03-05 Alex K. Schenk , Rebecca Griffin , Anton Tadich , Daniel Roberts , Alastair Stacey

A new experimental approach for in-situ Raman spectroscopy of the electrode | solid electrolyte interfaces in controlled atmospheres, based on the use of optically transparent single-crystal membranes of stabilized cubic zirconia, has been…

Room temperature dielectric and magnetic properties of BiFeO$_3$ samples, co-doped with magnetic Gd and non-magnetic Ti in place of Bi and Fe, respectively, were reported. The nominal compositions of…

Materials Science · Physics 2015-07-28 M. A. Basith , O. Kurni , M. S. Alam , B. L. Sinha , Bashir Ahmmad

Charge transfer between metal nanoparticles and the supported TiO2 surface is primarily important for catalytic applications as it greatly affects the catalytic activity and the thermal stability of the deposited nanoparticles on the…

Materials Science · Physics 2013-12-24 Cai Yongqing , Bai Zhaoqiang , Chintalapati Sandhya , Zeng Qingfeng , Feng Yuan Ping

200 nm thick SiO2 layers grown on Si substrates and Ge ions of 150 keV energy were implanted into SiO2 matrix with Different fluences. The implanted samples were annealed at 950 C for 30 minutes in Ar ambience. Topographical studies of…

Materials Science · Physics 2017-05-31 R. P. Yadav , V. Baranwal , Sunil Kumar , Avinash C Pandey , A. K. Mittal

Black TiO2 nanoparticles with a crystalline-core and amorphous-shell structure exhibit superior optoelectronic properties in comparison with pristine TiO2. The fundamental mechanisms underlying these enhancements, however, remain unclear,…

Laser cooling of solids keeps attracting attention owing to abroad range of its applications that extends from cm-sized all-optical cryocoolers for airborne and space-based applications to cooling on nanoparticles for biological and…

Optics · Physics 2021-03-01 Galina Nemova , Christophe Caloz

Magnesium (Mg) and its alloys have a great potential as structural materials due to their beneficial combination of high strength to weight ratio, high thermal conductivity and good machinability. However, few literatures about Mg coatings…

Materials Science · Physics 2011-01-24 Xinkun Suo , Xueping Guo , Wenya Li , Marie-Pierre Planche , Rodolphe Bolot , Hanlin Liao , Christian Codde

Metal-organic chalcogenides (MOCs), robust crystalline assemblies composed of coinage metals, chalcogens and organic ligands, are typically synthesized via prolonged, high temperature tarnishing of vacuum-deposited metal films with…

A novel design has been proposed for a facile and rapid build-up of highly tailorable nanostructured multishells on metal oxide particles (graphene/TiOx@TiO2) under a dry inert atmosphere to maximize the visible-light photocatalytic…

Materials Science · Physics 2022-02-15 Kunihiko Kato , Yunzi Xin , Sebastien Vaucher , Takashi Shirai

In this study we investigate the structural and chemical changes of monatomic CoO$_2$ chains grown self-organized on the Ir(100) surface [P. Ferstl et al., PRL 117, 2016, 046101] and on Pt(100) under reducing and oxidizing conditions. By a…

Materials Science · Physics 2018-10-22 P. Ferstl , F. Mittendorfer , J. Redinger , M. A. Schneider , L. Hammer

Metal oxide (MO) semiconductors are widely used in electronic devices due to their high optical transmittance and promising electrical performance. This work describes the advancement toward an eco-friendly, streamlined method for preparing…

Transition metal oxides such as vanadium dioxide (VO$_2$), niobium dioxide (NbO$_2$), and titanium sesquioxide (Ti$_2$O$_3$) are known to undergo a temperature-dependent metal-insulator transition (MIT) in conjunction with a structural…