Maik Lang
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View article: Peak Expiratory Flow and Its Trajectories Associated With Frailty in Older Adults: A Prospective Cohort Study
Peak Expiratory Flow and Its Trajectories Associated With Frailty in Older Adults: A Prospective Cohort Study Open
Background Current evidence indicates an association between peak expiratory flow (PEF) and frailty in older adults, yet critical gaps persist regarding: the longitudinal dynamics of PEF trajectories, their temporal relationships with frai…
View article: Persistence of small polarons into the superconducting doping range of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ba</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">K</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>BiO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Persistence of small polarons into the superconducting doping range of Open
Bipolaronic superconductivity is an exotic pairing mechanism proposed for materials like Ba1−xKxBiO3 (BKBO); however, conclusive experimental evidence for a (bi)polaron metallic state in this material remains elusive. Here, we combine reso…
View article: Neutron Total Scattering Experiments at High Pressure: Measuring Crystalline Structural Heterogeneity using the SNAP Instrument at the Spallation Neutron Source
Neutron Total Scattering Experiments at High Pressure: Measuring Crystalline Structural Heterogeneity using the SNAP Instrument at the Spallation Neutron Source Open
Exposure of materials to extreme pressure induces complex structural distortions, disorder, and phase transformations which effect their electronic, magnetic, and mechanical properties. These structural deviations, however, can be challeng…
View article: Oxygen Defect Configurations in Single-Phase UO<sub>2.15</sub>
Oxygen Defect Configurations in Single-Phase UO<sub>2.15</sub> Open
Hyperstoichiometric UO2.15 was characterized by neutron total scattering at high temperature in the single-phase UO2+x region of the U/O phase diagram. The diffraction data confirmed a single-phase fluorite structure at high temperature. A…
View article: Atomic-scale structure of ZrO <sub>2</sub> : Formation of metastable polymorphs
Atomic-scale structure of ZrO <sub>2</sub> : Formation of metastable polymorphs Open
Metastable phases can exist within local minima in the potential energy landscape when they are kinetically “trapped” by various processing routes, such as thermal treatment, grain size reduction, chemical doping, interfacial stress, or ir…
View article: Atomic-scale structural analysis of metastable zirconia
Atomic-scale structural analysis of metastable zirconia Open
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View article: Pyrochlore-type lanthanide titanates and zirconates: Synthesis, structural peculiarities, and properties
Pyrochlore-type lanthanide titanates and zirconates: Synthesis, structural peculiarities, and properties Open
This contribution provides a thorough examination of the structural characteristics of pyrochlore-type lanthanide titanates and zirconates Ln2Ti2O7 and Ln2Zr2O7, across various length scales. This paper also examines their processing, inte…
View article: Response of ZrC to swift heavy ion irradiation
Response of ZrC to swift heavy ion irradiation Open
Zirconium carbide (ZrC) is commonly used for energy sector research, as well as a surrogate for the proposed advanced nuclear fuel candidate uranium carbide. This study investigates structural modifications to nanocrystalline and microcrys…
View article: Systematic study of short- and long-range correlations in RE<sub>3</sub>TaO<sub>7</sub> weberite-type compounds by neutron total scattering and X-ray diffraction
Systematic study of short- and long-range correlations in RE<sub>3</sub>TaO<sub>7</sub> weberite-type compounds by neutron total scattering and X-ray diffraction Open
The atomic structures of the lanthanide tantalates, Ln 3 TaO 7 , series (Ln = Pr, Tb, Dy, Ho, Tm, Yb) were systematically investigated using total scattering techniques.
View article: Advanced technique for measuring relative length changes under control of temperature and helium-gas pressure
Advanced technique for measuring relative length changes under control of temperature and helium-gas pressure Open
We report the realization of an advanced technique for measuring relative length changes ΔL/L of mm-sized samples under the control of temperature (T) and helium-gas pressure (P). The system, which is an extension of the apparatus describe…
View article: Cation Short-Range Ordering of MgAl<sub>2</sub>O<sub>4</sub> and NiAl<sub>2</sub>O<sub>4</sub> Spinel Oxides at High Temperatures via <i>In Situ</i> Neutron Total Scattering
Cation Short-Range Ordering of MgAl<sub>2</sub>O<sub>4</sub> and NiAl<sub>2</sub>O<sub>4</sub> Spinel Oxides at High Temperatures via <i>In Situ</i> Neutron Total Scattering Open
Complex oxides that adopt the isometric spinel structure (AB2O4) are important for numerous technological applications and are relevant for certain geological processes, which involve exposure to extreme environments such as high pressures…
View article: The Thermodynamics of Crystallization and Phase-Separation in Melt-Derived Nuclear Waste Forms
The Thermodynamics of Crystallization and Phase-Separation in Melt-Derived Nuclear Waste Forms Open
This project aimed to gain detailed and fundamental understanding of the stability of glass waste forms to be used for safe and reliable encapsulation of nuclear waste. The focus was to understand thermodynamic and structural properties in…
View article: Editorial: Ordered and Disordered Cubic Systems: Pyrochlore to Fluorite, Now and the Horizon
Editorial: Ordered and Disordered Cubic Systems: Pyrochlore to Fluorite, Now and the Horizon Open
EDITORIAL article Front. Chem., 12 January 2022Sec. Solid State Chemistry Volume 9 - 2021 | https://doi.org/10.3389/fchem.2021.830330
View article: Pressure-Induced Insulator–Metal Transition in Two-Dimensional Mott Insulator NiPS<sub>3</sub>
Pressure-Induced Insulator–Metal Transition in Two-Dimensional Mott Insulator NiPS<sub>3</sub> Open
The pressure-induced insulator to metal transition (IMT) of layered magnetic nickel phosphorous tri-sulfide NiPS3 was studied in-situ under quasi-uniaxial conditions by means of electrical resistance (R) and X-ray diffraction (XRD) measure…
View article: Pressure-induced insulator-metal transition in two-dimensional Mott insulator NiPS3
Pressure-induced insulator-metal transition in two-dimensional Mott insulator NiPS3 Open
The pressure-induced insulator to metal transition (IMT) of layered magnetic nickel phosphorous tri-sulfide NiPS3 was studied in-situ under quasi-uniaxial conditions by means of electrical resistance (R) and X-ray diffraction (XRD) measure…
View article: Defining the Structural Stability Field of Disordered Fluorite Oxides
Defining the Structural Stability Field of Disordered Fluorite Oxides Open
Fluorite-structured oxides constitute an important class of materials for energy technologies. Despite their high level of structural symmetry and simplicity, these materials can accommodate atomic disorder without losing crystallinity, ma…
View article: Erratum: Cureton et al. Review of Swift Heavy Ion Irradiation Effects in CeO2. Quantum Beam Sci. 2021, 5, 19
Erratum: Cureton et al. Review of Swift Heavy Ion Irradiation Effects in CeO2. Quantum Beam Sci. 2021, 5, 19 Open
During the final production steps after the proofreading of this paper [...]
View article: Review of Swift Heavy Ion Irradiation Effects in CeO2
Review of Swift Heavy Ion Irradiation Effects in CeO2 Open
Cerium dioxide (CeO2) exhibits complex behavior when irradiated with swift heavy ions. Modifications to this material originate from the production of atomic-scale defects, which accumulate and induce changes to the microstructure, chemist…
View article: Transformations to amorphous and X-type phases in swift heavy ion-irradiated Ln2O3 and Mn2O3
Transformations to amorphous and X-type phases in swift heavy ion-irradiated Ln2O3 and Mn2O3 Open
The intense, highly localized electronic excitation resulting from swift heavy ion irradiation induces phase transformations in many materials including lanthanide sesquioxides (Ln2O3). To explore the effects of chemical composition on rad…