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Now showing items 1-45 of 45
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
We report on the structural and magnetic properties of the elusive Jahn-Teller active compound NaCrF3, for first time synthesized in large quantities allowing detailed characterization. The crystal structure of NaCrF3 is ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
We report a synthesis method, and structural and magnetic characterization, for the fluoroperovskite NaFeF3. We have developed a wet-chemical method that allows preparation of large volumes of air-sensitive fluoroperovskites ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Subtle changes in the atomic arrangement of NiTiO3 in the ilmenite structure affects its symmetry and properties. At high temperatures, the cations are randomly distributed throughout the structure, resulting in the corundum ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The material system Li-Ta-O is a promising candidate for thin-film solid-state electrolytes in Li-ion batteries. In the present study, we have varied the Li content x in LixTaOy thin films grown by atomic layer deposition ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Electronic phase separation is a frequent ingredient of the physics of manganites for which the colossal magnetoresistance (CMR) phenomenon is at debate. We investigate the switchable magnetoresistance (MR) effect of the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The layered oxide Na2Zn2TeO6 is a fast Na+ ion conductor and a suitable candidate for application as a solid-state electrolyte. We present a detailed study on how synthesis temperature and Na-content affect the crystal ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
We report the synthesis of phase pure Fe2WO6 and its structural characterization by high quality synchrotron X-ray powder diffraction, followed by studies of electric and thermoelectric properties as a function of temperature ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Using a facile one-pot colloidal method, it is now possible to obtain monodisperse Co1−xRex nanoparticles (NPs), with excellent control of Re stoichiometry for x < 0.15. Re-incorporation in terms of a solid solution ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Alkali metal containing materials have become increasingly attractive in a world hunting for sustainable energy materials and green functional devices. Lithium- and sodium battery technology, lead-free piezo- and ferroelectric ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Four isostructural CPO‐54‐M metal‐organic frameworks based on the larger organic linker 1,5‐dihydroxynaphthalene‐2,6‐dicarboxylic acid and divalent cations (M=Mn, Mg, Ni, Co) are shown to be isoreticular to the CPO‐27 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
High performance magnetocaloric materials are crucial to realize the energy efficient and environment friendly magnetic cooling/refrigeration technology. We have designed Mn1-xCuxCoGe compounds possessing a giant magnetocaloric ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The properties of the mixed system LiBH4–LiCl–P2S5 are studied with respect to all-solid-state batteries. The studied material undergoes an amorphization upon heating above 60 °C, accompanied with increased Li+ conductivity ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
As traditional silicon technology is moving fast towards its fundamental limits, all-oxide electronics is emerging as a challenger offering principally different electronic behavior and switching mechanisms. This technology ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Hydrogen is essential in a variety of large-scale chemical processes. As a carbon-free energy carrier, hydrogen has a potential for wide use within power production and transportation. However, most of the recent production ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Thin films of the catalytically interesting ternary and quaternary perovskites GdCoO3 and Gd0.9Ca0.1CoO3 are fabricated by atomic layer deposition using metal β-diketonates and ozone as precursors. The resulting thin films ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
In this work we benefited from recent advances in tools for crystal‐structure analysis that enabled us to describe an exotic nanoscale phenomenon in structural chemistry. The Mn0.60Ni0.40As sample of the Mn1−xNixAs solid ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Nickelates, just like their isoelectronic cousins (the cuprate superconductors), are candidates for high temperature superconductivity. As charge density waves (CDW) and superconductivity might share a similar microscopic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Potassium sodium niobate (KNN) has long been considered a viable candidate for replacing lead‐based materials in piezo‐ and ferroelectric devices. The introduction of KNN on an industrial scale is highly awaited; however, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
In recent years, the scientific community has shown an increasing interest in regards to the investigation of novel materials for the intercalation of lithium atoms, suitable for application as cathodes in the new generations ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
The sorbent enhanced water-gas shift (SEWGS) process has great potential for CO2 capture and is thereby a realistic alternative to conventional post-combustion capture by gas emission scrubbing. Nevertheless, better ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The authors here report epitaxial growth of the ferrimagnet NixFe3–xO4 (NFO) by atomic layer deposition at low temperatures. Films grow epitaxially at a reactor temperature of 250 °C and require no further postannealing ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The current study extends the insight into solid-state diffusion in alloys of the Platinum Group Metals (PGMs). Thereby, we pave the way for tailor making surface compositions of binary platinum (Pt) – rhodium (Rh) model ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Several studies have demonstrated that MgH2 is a promising conversion-type anode toward Li. A major obstacle is the reversible capacity during cycling. Electrochemical co-existence of a mixed metal hydride-oxide conversion ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
Thin film of silicon is an interesting material for many technological applications in electronic industry and in energy harvesting technologies, but requires a method for controlled growth of thin films. The purpose of ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
Transition metal containing polyanion compounds are effective excellent electrode materials for sodium-ion batteries due to their high intrinsic electrochemical potentials and to the resulting high energy density. Iron ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
In the past few decades, advances in colloidal nanoparticle synthesis have created new possibilities for the preparation of supported model catalysts. However, effective removal of surfactants is a prerequisite to evaluate ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
In the present contribution we assess the luminescent properties of amorphous europium titanium phosphate thin films. The films have been deposited by atomic layer deposition, using the precursor combinations Eu(thd)3 (thd ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
To improve lithium and sodium ion battery technology, it is imperative to understand how the properties of the different components are controlled by their chemical structures. Operando structural studies give us some of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Pre-combustion CO2 capture technologies are becoming viable alternatives to more conventional post-combustion capture by gas emissions scrubbing. The sorbent enhanced water-gas shift (SEWGS) process is a promising future ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
Sodium orthosilicates Na2MSiO4 (M = Mn, Fe, Co and Ni) have attracted much attention due to the possibility of exchanging two electrons per formula unit. They are also found to exhibit great structural stability due to a ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
We demonstrate controlled deposition by atomic layer deposition of YVO4:Yb3+ thin films exhibiting an intense NIR emission under UV excitation after post-deposition annealing at 1000 °C. The samples are deposited using the ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
UV to visible and near-infrared converting thin films of YbVO4 have been deposited by atomic layer deposition, using the precursor combinations Yb(thd)3 (thd = 2,2,6,6-tetramethyl-3,5-heptanedione) and O3, and VO(thd)2 and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Li2FeSiO4 is an important alternative cathode for next generation Li-ion batteries due to its high theoretical capacity (330 mA h g−1). However, its development has faced significant challenges arising from structural ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We have studied the structural behavior of SAPO-37 during calcination using simultaneous in situ powder X-ray diffraction (PXRD) and mass spectroscopy (MS) in addition to ex situ thermogravimetric analysis (TGA) and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Thin films of complex alkali oxides are frequently investigated due to the large range of electric effects that are found in this class of materials. Their piezo- and ferroelectric properties also place them as sustainable ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2015)
The Ruddlesden–Popper (RP3) type oxides, La4Co3O10+δ and La4Ni3O10+δ, form a complete solid solution. Powder X-ray and neutron diffraction data show that La4(Co1−xNix)3O10+δ is isostructural to the monoclinic La4Co3O10+δ ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
In the title compound, C9H9IO3, the molecules are close to planar [maximum deviation from benzene ring plane = 0.229 (5) Å for the methyl carboxylate C atom] with the methyl groups oriented away from each other. In the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
In the title compound, C18H18O6, the biphenyl moiety is twisted with a dihedral angle of 29.11 (10)°. The carbomethoxy groups form C-C-C-O torsion angles of -18.3 (3) and -27.7 (3)° with the attached rings, as a result ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Luminescent europium titanium oxides (EuxTiyOz) have been deposited as thin films by atomic layer deposition (ALD) in the temperature range 225 to 375 °C with control of the stoichiometry from pure TiO2 to pure Eu2O3, and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Thin films of sodium and potassium oxides have for the first time been deposited using atomic layer deposition. Sodium and potassium complexes of tert-butanol, trimethylsilanol and hexamethyldisilazide have been evaluated ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2013)
Ln2O3 thin films with optically active f-electrons (Ln = Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb) have been grown on Si(100) and soda lime glass substrates by atomic layer deposition (ALD) using Ln(thd)3 (Hthd = ...
(Journal article / Tidsskriftartikkel / Published version; Peer reviewed, 2013)
The ferroelectric and electro-optical properties of LiNbO3 make it an important material for current and future applications. It has also been suggested as a possible lead-free replacement for present PZT-devices. The ...