Thin films including layers: Terminology in relation to their preparation and characterization IUPAC Recommendations 1994

Minassian-Sarag, L. Ter; Vincent, Brian; Adler, M. E.; Barraud, A.; Churaev, N. V.; Eaton, David F.; Kuhn, H.H.; Misono, Makoto; Platikanov, Dimo; Ralston, John; Silberberg, A.; Zemel, J.N.

doi:10.1016/0040-6090(95)08148-8

Cited by 13 publications

(7 citation statements)

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“…The d dependence of J for values lower than 5a can be considered with an exponential tendency, which is consistent with the well-known result of the disorder mediated RKKY interaction. A rapid decay of J for d greater than 6a, due to the oscillatory behavior of the RKKY interaction, encourages us to neglect the exchange interaction at higher distances and consider a cut-off radius lower than this value [20].…”

Section: Generic Modelmentioning

confidence: 99%

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

et al. 2020

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In this work, Monte Carlo simulations of magnetic properties of thin films, including the influence of an external pressure, are presented. These simulations were developed using a Hamiltonian composed by terms that represent the exchange interaction, dipolar interaction, Zeeman effect, monocrystalline anisotropy, and pressure influence. The term that represents the pressure influence on the magnetic properties was included, since for many applications, magnetic materials are a part of a multiferroic material together with a piezoelectric or a ferroelectric compound. Initially, the model was developed using generic parameters, in order to probe its suitable performance; after that, parameters were adjusted for simulating thin films of La0.67Sr0.33MnO3, a manganite with several technological applications because its Curie temperature is greater than room temperature. Including the pressure influence, it was observed the formation of several kind of FM/AF configurations as strip, labyrinth, and chess board forms. Furthermore, it was observed that, as the pressure increased, the critical temperature tended to decrease, and this result was in agreement with experimental reports.

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Section: Generic Modelmentioning

confidence: 99%

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

et al. 2020

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“…This hampers further successful implementation of the host–guest approach for efficient utilization of hematite. ,,, Previous studies with the atmospheric pressure chemical vapor deposition (APCVD) of Fe 2 O 3 suggested the beneficial effect of a pretreatment of tetraethyl orthosilicate (TEOS) . This finding suggests that interfacial layers between absorber and current collector may play a decisive role in the transport properties of the electrode assembly and that the integration of a buffer layer is a promising device engineering avenue for the performance improvement of photoelectrodes. The importance of such buffer layers is demonstrated by many examples, such as the enhanced photoactivity of hematite photoanodes deposited on FTO conducting substrate modified with SiO x , TiO 2 , ,, Nb 2 O 5 , and Ga 2 O 3 , as well as SnO 2 or Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Function and Electronic Structure of the SnO₂ Buffer Layer between the α-Fe₂O₃ Water Oxidation Photoelectrode and the Transparent Conducting Oxide Current Collector

Boudoire

Mayer

et al. 2021

J. Phys. Chem. C

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The tin oxide buffer layer between the transparent conducting oxide current collector and the hematite photoelectrode causes considerable water oxidation enhancement of that electrode. The water oxidation onset potential is lowered by 180 mV. The lifetime of photogenerated charge carriers is increased by a factor of 10. For the investigation of structure and function of the buffer layer, we designed a wedge-shaped multilayer film assembly. Oxygen 1s X-ray photoemission spectra suggest a decrease of oxygen vacancy concentration near the interface of α-Fe 2 O 3 and FTO−SnO 2 , when the SnO 2 buffer layer is introduced. This SnO 2 buffer layer increases the crystallinity of the hematite layer. The oxygen 1s near-edge X-ray absorption fine structure shows that the buffer layer increases the Fe 3d−O 2p hybridization and affects the quasi-Fermi level of electrons in α-Fe 2 O 3 . There is some indication that the α-Fe 2 O 3 layer contains an adverse hole state in the valence band which disappears when the α-Fe 2 O 3 layer is grown on the SnO 2 layer. This layer induces improved orbital overlap with subsequent improved charge transfer between the absorber α-Fe 2 O 3 and the current collector FTO. Our experiments indicate that performance enhancement by this buffer layer is of electronic structure origin.

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“…According to the International Union of Pure and Applied Chemistry (IUPAC) a membrane is "a structure that has lateral dimensions much greater than its thickness, through which transfer may occur under a variety of driving forces" [1] This definition may sound similar to the concept of thin-film but in this case, IUPAC defines thin-film as "a film whose thickness is of the order of a characteristic scale or smaller" [2]. The difference between a membrane and a thin-film is that a membrane is a thin, film-like structure (not necessarily a solid) that separates fluids (liquids, gases, or vapours), acting as a selective barrier, allowing specific substances to pass through, while retaining others.…”

Section: Introductionmentioning

confidence: 99%

“…or from inorganic materials like metal oxides and ceramics. An ideal membrane should present the following industrial requirements: (1) be as thin as possible with good mechanical properties to lower energy consumption and cost; (2) show high pore density to maximize the membrane porosity and thus the flux and permeability; (3) be selective due to a controlled morphology at the nanometre scale; (4) use a universal preparation strategy providing a broad range of pore sizes with a sharp control especially between 1 and 100 nm; (5) good chemical and thermal stability and; (6) have tuneable dynamics to afford in-situ control over membrane parameters (pore size, flux, etc.) [5].…”

Section: Introductionmentioning

confidence: 99%

Metal and Covalent Organic Frameworks for Membrane Applications

2020

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Better and more efficient membranes are needed to face imminent and future scientific, technological and societal challenges. New materials endowed with enhanced properties are required for the preparation of such membranes. Metal and Covalent Organic Frameworks (MOFs and COFs) are a new class of crystalline porous materials with large surface area, tuneable pore size, structure, and functionality, making them a perfect candidate for membrane applications. In recent years an enormous number of articles have been published on the use of MOFs and COFs in preparation of membranes for various applications. This review gathers the work reported on the synthesis and preparation of membranes containing MOFs and COFs in the last 10 years. Here we give an overview on membranes and their use in separation technology, discussing the essential factors in their synthesis as well as their limitations. A full detailed summary of the preparation and characterization methods used for MOF and COF membranes is given. Finally, applications of these membranes in gas and liquid separation as well as fuel cells are discussed. This review is aimed at both experts in the field and newcomers, including students at both undergraduate and postgraduate levels, who would like to learn about preparation of membranes from crystalline porous materials.

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Thin films including layers: Terminology in relation to their preparation and characterization IUPAC Recommendations 1994

Cited by 13 publications

References 0 publications

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

Function and Electronic Structure of the SnO₂ Buffer Layer between the α-Fe₂O₃ Water Oxidation Photoelectrode and the Transparent Conducting Oxide Current Collector

Metal and Covalent Organic Frameworks for Membrane Applications

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Thin films including layers: Terminology in relation to their preparation and characterization IUPAC Recommendations 1994

Cited by 13 publications

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The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

Function and Electronic Structure of the SnO2 Buffer Layer between the α-Fe2O3 Water Oxidation Photoelectrode and the Transparent Conducting Oxide Current Collector

Metal and Covalent Organic Frameworks for Membrane Applications

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Function and Electronic Structure of the SnO₂ Buffer Layer between the α-Fe₂O₃ Water Oxidation Photoelectrode and the Transparent Conducting Oxide Current Collector