Academic literature on the topic 'Multisite crystalline solid solutions'

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Journal articles on the topic "Multisite crystalline solid solutions"

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Malachowski, M., I. R. Kityk, B. Sahraoui, and A. Mefleh. "Acousto-optical investigations of crystalline solid solutions." Pure and Applied Optics: Journal of the European Optical Society Part A 7, no. 6 (November 1998): 1373–77. http://dx.doi.org/10.1088/0963-9659/7/6/015.

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Bènière, François, Michelle Bènière, Vissamsetti Hari Babu, and Kothakota Viswanatha Reddy. "Self- and heterodiffusion in crystalline solid solutions." Journal of Physics and Chemistry of Solids 55, no. 7 (July 1994): 595–604. http://dx.doi.org/10.1016/0022-3697(94)90058-2.

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TAO, Y., D. YI, and J. LI. "Electrochemical formation of crystalline Li3VO4/Li4SiO4 solid solutions film." Solid State Ionics 179, no. 40 (December 31, 2008): 2396–98. http://dx.doi.org/10.1016/j.ssi.2008.09.017.

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d'Agostino, Simone, Luca Fornasari, Fabrizia Grepioni, Dario Braga, Federica Rossi, Michele R. Chierotti, and Roberto Gobetto. "Precessional Motion in Crystalline Solid Solutions of Ionic Rotors." Chemistry - A European Journal 24, no. 56 (September 7, 2018): 15059–66. http://dx.doi.org/10.1002/chem.201803071.

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Tsunashima, Ryo. "Molecular solid solutions for advanced materials – homeomorphic or heteromorphic." CrystEngComm 24, no. 7 (2022): 1309–18. http://dx.doi.org/10.1039/d1ce01632f.

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Fourmigué, Marc. "Solid-solution (alloying) strategies in crystalline molecular conductors." Journal of Materials Chemistry C 9, no. 33 (2021): 10557–72. http://dx.doi.org/10.1039/d1tc02160e.

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Solid solutions in molecular conductors are key tools for investigating their conducting and magnetic properties, addressing phase transitions, chemical pressure effects and band filling manipulation.
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Zhang, Qin Xing, Li Qian, Li Xia Wang, S. Stuto, and Chang Yu Shen. "Study of Casting Self-Colored Liquid Crystalline Solid Films of Hydroxypropyl Cellulose." Applied Mechanics and Materials 341-342 (July 2013): 217–20. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.217.

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Solutions of lyotropic cholesteric liquid crystalline hydroxypropyl cellulose (HPC) in water would be self-colored due to the selective reflection of visible light, depending on the solution concentration. Colored coating of the liquid crystalline aqueous HPC solutions was attempted to apply. HPC solid films were found which could cast from the liquid crystalline solutions at different conditions such as solution concentration and different drying temperature. Experiments show that both solution concentration and cooling velocity play an important effect in controlling the color of HPC films.
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Lee, Soonil, and Clive A. Randall. "A modified Vegard’s law for multisite occupancy of Ca in BaTiO3–CaTiO3 solid solutions." Applied Physics Letters 92, no. 11 (March 17, 2008): 111904. http://dx.doi.org/10.1063/1.2857475.

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Li, Huaming, and Mo Li. "A mean-field model for amorphization in crystalline solid solutions." Journal of Applied Physics 109, no. 10 (May 15, 2011): 103507. http://dx.doi.org/10.1063/1.3583671.

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Shtukenberg, A. G., Yu O. Punin, and Ol'ga V. Frank-Kamenetskaya. "The kinetic ordering and growth dissymmetrisation in crystalline solid solutions." Russian Chemical Reviews 75, no. 12 (December 31, 2006): 1083–106. http://dx.doi.org/10.1070/rc2006v075n12abeh003598.

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Dissertations / Theses on the topic "Multisite crystalline solid solutions"

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Sommacal, Silvano, and silvano sommacal@anu edu au. "Computational petrology: Subsolidus equilibria in the upper mantle." The Australian National University. Research School of Earth Sciences, 2004. http://thesis.anu.edu.au./public/adt-ANU20050415.151025.

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Processes that take place in the Earth’s mantle are not accessible to direct observation. Natural samples of mantle material that have been transported to the surface as xenoliths provide useful information on phase relations and compositions of phases at the pressure and temperature conditions of each rock fragment. In the past, considerable effort has been devoted by petrologists to investigate upper mantle processes experimentally. Results of high temperatures, high pressure experiments have provided insight into lower crust-upper mantle phase relations as a function of temperature, pressure and composition. However, the attainment of equilibrium in these experiments, especially in complex systems, may be very difficult to test rigorously. Furthermore, experimental results may also require extrapolation to different pressures, temperatures or bulk compositions. More recently, thermodynamic modeling has proved to be a very powerful approach to this problem, allowing the deciphering the physicochemical conditions at which mantle processes occur. On the other hand, a comprehensive thermodynamic model to investigate lower crust-upper mantle phase assemblages in complex systems does not exist. ¶ In this study, a new thermodynamic model to describe phase equilibria between silicate and/or oxide crystalline phases has been derived. For every solution phase the molar Gibbs free energy is given by the sum of contributions from the energy of the end-members, ideal mixing on sites, and excess site mixing terms. It is here argued that the end-member term of the Gibbs free energy for complex solid solution phases (e.g. pyroxene, spinel) has not previously been treated in the most appropriate manner. As an example, the correct expression of this term for a pyroxene solution in a general (Na-Ca-Mg-Fe2+-Al-Cr-Fe3+-Si-Ti) system is presented and the principle underlying its formulation for any complex solution phase is elucidated.¶ Based on the thermodynamic model an algorithm to compute lower crust-upper mantle phase equilibria for subsolidus mineral assemblages as a function of composition, temperature and pressure has been developed. Included in the algorithm is a new way to represent the total Gibbs free energy for any multi-phase complex system. At any given temperature and pressure a closed multi-phase system is at its equilibrium condition when the chemical composition of the phases present in the system and the number of moles of each are such that the Gibbs free energy of the system reaches its minimum value. From a mathematical point of view, the determination of equilibrium phase assemblages can, in short, be defined as a constrained minimization problem. To solve the Gibbs free energy minimization problem a ‘Feasible Iterate Sequential Quadratic Programming’ method (FSQP) is employed. The system’s Gibbs free energy is minimized under several different linear and non-linear constraints. The algorithm, coded as a highly flexible FORTRAN computer program (named ‘Gib’), has been set up, at the moment, to perform equilibrium calculations in NaO-CaO-MgO-FeO-Al2O3-Cr2O3-Fe2O3- SiO2-TiO2 systems. However, the program is designed in a way that any other oxide component could be easily added.¶ To accurately forward model phase equilibria compositions using ‘Gib’, a precise estimation of the thermodynamic data for mineral end-members and of the solution parameters that will be adopted in the computation is needed. As a result, the value of these parameters had to be derived/refined for every solution phase in the investigated systems. A computer program (called ‘GibInv’) has been set up, and its implementation is here described in detail, that allows the simultaneous refinement of any of the end-member and mixing parameters. Derivation of internally consistent thermodynamic data is obtained by making use of the Bayesian technique. The program, after being successfully tested in a synthetic case, is initially applied to pyroxene assemblages in the system CaO-MgO-FeO-Al2O3-SiO2 (i.e. CMFAS) and in its constituent subsystems. Preliminary results are presented.¶ The new thermodynamic model is then applied to assemblages of Ca-Mg-Fe olivines and to assemblages of coexisting pyroxenes (orthopyroxene, low Ca- and high Ca clinopyroxene; two or three depending on T-P-bulk composition conditions), in CMFAS system and subsystems. Olivine and pyroxene solid solution and end-member parameters are refined, in part using ‘GibInv’ and in part on a ‘trial and error’ basis, and, when necessary, new parameters are derived. Olivine/pyroxene phase relations within such systems and their subsystems are calculated over a wide range of temperatures and pressures and compare very favorably with experimental constraints.
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Kauser, N. "Low temperature anomalies in plastic response of crystalline materials with special reference to dilute solid solutions." Thesis, Brunel University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233340.

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Renaud, Gilles. "Ordre chimique et désordre topologique dans les solutions solides AuNi : étude par résistivité et par absorption et diffusion du rayonnement synchrotron X." Grenoble 1, 1988. http://www.theses.fr/1988GRE10134.

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Caracterisation precise de la tendance a l'ordre a courte distance dans le monocristal au::(80) ni::(20): l'alliage est aleatoire en premier voisin, mais il existe une faible tendance a l'homocoordination en second voisin. Determination dans tout le domaine de composition des valeurs des trois distances moyennes partielles ainsi que de la largeur et de l'asymetrie de leur distribution. Mesure de l'effet de coeur dans les alliages dilues. Simulation par ordinateur des distorsions du reseau. Evaluation selon un modele harmonoque de l'energie elastique
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Hamdoune, Salaheddine. "Relations entre les structures et les propriétés de transport des solutions solides Li(1+x)Ti(2-x)In(x)P(3)O(12)." Grenoble 1, 1986. http://www.theses.fr/1986GRE10088.

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Etude cristallographique par diffraction rx d'electrons de li::(1+x) ti::(2-x) in::(x) p::(3) o::(7) et de li in p::(2) o::(7) afin de permettre une meilleure comprehension des mecanismes de transport de li**(+) dans ces composes. Suivant la concentration en in, les etudes structurales mettent en evidence trois phases differentes dans la solution solide. Les mesures de la conductivite ont montre que la modification des proprietes electriques est associee a l'etablissement d'une structure favorable a une conductivite elevee. C'est pourquoi cinq cristaux de compositions differentes ont ete etudies. Comme application, essai de realisation d'une pile a partir de la phase la plus conductrice : resultats prometteurs
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Larguet, Nour-Eddine. "Contribution à l'étude de la formation de l'état quasicristallin." Rouen, 1995. http://www.theses.fr/1995ROUES025.

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Le retour à l'équilibre d'une solution solide sursaturée contenant 2 à 3 at % de Mn d'une part et l'effet du recuit à 530° C sur la structure de la phase T2 du système Al-Li-Cu d'autre part ont été étudiés par diffraction X in-situ et par M. E. T. Dans le système Al-Mn et pour la première fois, la précipitation d'une phase quasicristalline à partir d'une solution solide sursaturée a été mise en évidence. Elle constitue une étape intermédiaire métastable du retour à l'équilibre vers la phase stable Al6Mn. La teneur en Mn de cette phase a été déterminée par des mesures en diffraction X et par MET/EdX. La valeur obtenue comprise entre 9,4 et 10,8 at%, est fonction de la concentration nominale de l'alliage et fixe ainsi la limite inférieure de formation d'une structure quasicristalline dans le système Al-Mn. Dans le système Al-Li-Cu des échantillons de composition Al6Li3Cu, ayant subi des recuits isothermes à 530°C sous 40 atm. D'argon, ont été étudiés. Nous avons entrepris une étude quantitative des écarts au modèle du quasicristal parfait par des mesures de diffraction X à température ambiante. Le recuit prolongé élimine progressivement les défauts de type phason, accompagnant une modification de la composition chimique de la phase T2. Des modèles de structures approximantes ont été simulés par un calcul des spectres de diffraction électronique et de rayons X. Les modèles les plus proches de l'expérience correspondent à des approximants orthorhombiques d'ordre (5/3, 5/3, 3/2) pour l'alliage brut de coulée et (8/5, 5/3, 5/3) pour le matériau recuit. Les paramètres de maille varient de 50 à 60 ang
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Sommacal, Silvano. "Computational petrology: Subsolidus equilibria in the upper mantle." Phd thesis, 2004. http://hdl.handle.net/1885/48196.

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Processes that take place in the Earth’s mantle are not accessible to direct observation. Natural samples of mantle material that have been transported to the surface as xenoliths provide useful information on phase relations and compositions of phases at the pressure and temperature conditions of each rock fragment. In the past, considerable effort has been devoted by petrologists to investigate upper mantle processes experimentally. Results of high temperatures, high pressure experiments have provided insight into lower crust-upper mantle phase relations as a function of temperature, pressure and composition. However, the attainment of equilibrium in these experiments, especially in complex systems, may be very difficult to test rigorously. Furthermore, experimental results may also require extrapolation to different pressures, temperatures or bulk compositions. More recently, thermodynamic modeling has proved to be a very powerful approach to this problem, allowing the deciphering the physicochemical conditions at which mantle processes occur. On the other hand, a comprehensive thermodynamic model to investigate lower crust-upper mantle phase assemblages in complex systems does not exist. ¶ In this study, a new thermodynamic model to describe phase equilibria between silicate and/or oxide crystalline phases has been derived. For every solution phase the molar Gibbs free energy is given by the sum of contributions from the energy of the end-members, ideal mixing on sites, and excess site mixing terms. It is here argued that the end-member term of the Gibbs free energy for complex solid solution phases (e.g. pyroxene, spinel) has not previously been treated in the most appropriate manner. As an example, the correct expression of this term for a pyroxene solution in a general (Na-Ca-Mg-Fe2+-Al-Cr-Fe3+-Si-Ti) system is presented and the principle underlying its formulation for any complex solution phase is elucidated. ¶ ...
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Books on the topic "Multisite crystalline solid solutions"

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Kauser, Naureen. Low temperature anomolies in the plastic response of crystalline materials with special reference to dilute solid-solutions. Uxbridge: Brunel University, 1988.

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Saxena, S. K. Thermodynamics of Rock-Forming Crystalline Solutions. Springer, 2012.

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Saxena, S. K. Thermodynamics of Rock-Forming Crystalline Solutions. Springer, 2012.

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Book chapters on the topic "Multisite crystalline solid solutions"

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Sparks, C. J., G. E. Ice, L. B. Shaffer, and J. L. Robertson. "Experimental Measurement of Local Displacement and Chemical Pair Correlations in Crystalline Solid Solutions." In Metallic Alloys: Experimental and Theoretical Perspectives, 73–82. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1092-1_9.

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Fedorov, P. P., T. M. Turkina, V. A. Meleshina, and B. P. Sobolev. "Cellular Substructures in Single Crystalline Solid Solutions of Inorganic Fluorides Having the Fluorite Structure." In Growth of Crystals, 165–76. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3660-4_16.

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Tossell, John A., and David J. Vaughan. "Applications To Geochemical Problems." In Theoretical Geochemistry. Oxford University Press, 1992. http://dx.doi.org/10.1093/oso/9780195044034.003.0010.

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In this, the last major chapter of the book, we turn our attention to the applications of modern electronic structure models and concepts to more general geochemical problems; namely, those described by Goldschmidt as being concerned with the “distribution of elements in the geochemical spheres and the laws governing the distribution of the elements” (see Preface). The majority of minerals and rocks originally formed by crystallization from melts, and so the first section of this chapter is devoted to considering the nature of melts (and glasses), structure and bonding in melts, and the partitioning of elements (particularly transition elements) between the melt and crystallizing solid phases. The classic work of Bowen (1928) led to the recognition of particular sequences of crystallization and crystal-melt reaction relationships in the silicate melts from which major rock types form, as enshrined in the “Bowen Reaction Series.” Attempts were also made to explain the incorporation of particular elements into particular mineral structures using simple crystal chemical arguments, notably as laid down in “Goldschmidt’s Rules” (Goldschmidt, 1937). Such concepts are reappraised in the light of modern electronic structure theories. The other major realm of formation of minerals and rocks, and the most important medium of transport and redistribution of the chemical elements at the Earth’s surface, is the aqueous solution. The molecular and electronic structures of aqueous solutions, their behavior at elevated temperatures, formation and stabilities of complexes in solution, and the mechanisms of reactions in solution are all considered in the second section of this chapter. The surfaces of minerals (or other crystalline solids) differ from the bulk material in terms of both crystal structure and electronic structure. A great variety of spectroscopic, diffraction, scanning, and other techniques are now available to study the nature of solid surfaces, and models are being developed to interpret and explain the experimental data. These approaches are discussed with reference to a few examples of oxide and sulfide minerals. Although relatively few studies have been undertaken specifically of the surfaces of minerals, many of the reaction phenomena that occur in natural systems take place at mineral surfaces, so that such surface studies represent an important area of future research.
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Drickamer, H. G. "Pressure-Tuning Spectroscopy: A Tool for Investigating Molecular Interactions." In High Pressure Effects in Molecular Biophysics and Enzymology. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195097221.003.0005.

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Pressure-tuning spectroscopy is a powerful tool for investigating molecular interactions. These interactions may involve organic or inorganic materials in liquid, polymeric, or crystalline media. In this article we confine our attention to organic molecules, largely in dilute solution in polymers or liquids. We demonstrate the use of high-pressure luminescence to study the effect of the environment on π* →π, π* →n and charge-transfer excitations, as well as the interaction between singlet and triplet states. In addition, we provide tests of the energy gap law for non-radiative dissipation of excitation, the role of viscosity in luminescent efficiency, and the internal consistency of various means of predicting and correlating energy transfer. Over the past 40 years, it has been amply demonstrated that high pressure is a powerful tool for studying electronic phenomena in condensed phases. The basic concept is as follows. The optical, electrical, magnetic, and chemical properties—collectively the electronic properties—of condensed phases depend on the interactions of the outer electrons on the atoms, molecules, or ions that make up the phase. Different kinds of electronic orbitals have different spatial characteristics—different radial extent, different shape (orbital angular momentum), and different diffuseness; therefore, pressure perturbs the energies associated with these orbitals in different degrees. This relative perturbation we call “pressure tuning,” and the measurement and explanation of the tuning is “pressure-tuning spectroscopy.” Pressure-tuning spectroscopy of the vibrational and rotational excitations of atoms in molecular and in crystal lattices is also an active and important field, but in this article we arc concerned mainly with electronic phenomena. We further limit this discussion primarily to organic molecules in solid polymers or liquid solutions, as these have the greatest relevance to biologically active systems. A variety of probes are used for studying electronic phenomena under high pressure, but the emphasis here is on luminescence. The presentation consists of a series of examples of various types of excitations on interactions where high pressure has been an effective tool. Only references directly relevant to each example are included. Two general references to pressure studies of molecular luminescence have been published (Drickamer, 1982, 1990).
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Conference papers on the topic "Multisite crystalline solid solutions"

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Zhukova, L. V., A. E. Lvov, D. D. Salimgareev, A. A. Yuzhakova, D. A. Belousov, and A. S. Korsakov. "Highly transparent crystalline ceramic based on two solid solutions of the AgBr - TlI system." In 2020 International Conference Laser Optics (ICLO). IEEE, 2020. http://dx.doi.org/10.1109/iclo48556.2020.9285873.

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Suhak, Y., B. Jerliu, H. Fritze, S. Ganschow, D. Roshchupkin, B. Red’kin, and S. Sanna. "A1.4 Electrical and Electromechanical Properties of Single Crystalline Li(Nb,Ta)O3 Solid Solutions up to 700 °C." In SMSI 2021. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2021. http://dx.doi.org/10.5162/smsi2021/a1.4.

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Burakov, B., V. Gribova, A. Kitsay, M. Ojovan, N. C. Hyatt, and M. C. Stennett. "Synthesis of Crystalline Ceramics for Actinide Immobilisation." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7047.

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Methods for the synthesis of ceramic wasteforms for the immobilization of actinides are common to those for non-radioactive ceramics: hot uniaxial pressing (HUP); hot isostatic pressing (HIP); cold pressing followed by sintering; melting (for some specific ceramics, such as garnet/perovskite composites). Synthesis of ceramics doped with radionuclides is characterized with some important considerations: all the radionuclides should be incorporated into crystalline structure of durable host-phases in the form of solid solutions and no separate phases of radionuclides should be present in the matrix of final ceramic wasteform; all procedures of starting precursor preparation and ceramic synthesis should follow safety requirements of nuclear industry. Synthesis methods that avoid the use of very high temperatures and pressures and are easily accomplished within the environment of a glove-box or hot cell are preferable. Knowledge transfer between the V. G. Khlopin Radium Institute (KRI, Russia) and Immobilisation Science Laboratory (ISL, UK) was facilitated in the framework of a joint project supported by UK Royal Society. In order to introduce methods of precursor preparation and ceramic synthesis we selected well-known procedures readily deployable in radiochemical processing plants. We accounted that training should include main types of ceramic wasteforms which are currently discussed for industrial applications.
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Ehrlich, Lili E., Justin S. G. Feig, Scott N. Schiffres, Jonathan A. Malen, and Yoed Rabin. "A New Device and Technique for Thermal Conductivity Measurements of Glass-Forming Materials With Application to Cryopreservation." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17473.

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The current study is aimed at developing a device and technique to measure the thermal conductivity of materials relevant to cryopreservation — the preservation of biomaterials at very low temperatures. It is well established that ice formation is the cornerstone of low-temperature injury [1]. In an effort to improve the outcome of cryopreservation, ice crystallization can be controlled by the addition of cryoprotective agents (CPAs), such as dimethyl sulfoxide (DMSO). CPA solutions are characterized by exponentially increasing viscosity with the decreasing temperature. If cooled rapidly enough, the crystalline phase can be completely suppressed and the material is trapped in a solid-like state known as vitrification (vitreous in Latin means glassy). While correlating the quality of the cryopreserved product with the thermal history may be straightforward to obtain in small specimens, characterized by close-to-uniform temperature distribution, analysis of larger specimens requires integration of mathematical tools to estimate the spatial temperature distribution at any instant along the cryogenic protocol. The data developed in the current study is aimed at enabling the corresponding thermal analysis, while exploring the variation in thermal conductivity between the crystalline and glassy states.
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Christenn, C., A. Ansar, A. Haug, S. Wolf, and J. Arnold. "The Solution Precursor Plasma Spray Process for Making Zirconia based Electrolytes." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and A. McDonald. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p1184.

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Abstract Ceramic layers, such as yttria-stabilized zirconia or scandia-stabilized zirconia, used for functional layers of solid oxide fuel cells, i.e. the gas tight oxygen ion conductive electrolyte or as ceramic component in the porous cermet anode, were obtained by the Solution Precursor Plasma Spray (SPPS) process. The influence of different solvent types on microstructure was analyzed by comparison of coatings sprayed with water-based solution to ethanol-based one. Use of solvent with low surface tension and low boiling point enhances splat formation, coating microstructure and crystalline structure. Parameter adjustment to receive coatings from nitrate solutions with ethanol as solvent was carried out. Results of Raman spectroscopy indicate that an intermediate of both nitrates (zirconyl and scandium nitrate hydrate) was deposited.
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