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1

Chen, Pengqi, Mingli Qin, Zheng Chen, Baorui Jia, and Xuanhui Qu. "Solution combustion synthesis of nanosized WOx: characterization, mechanism and excellent photocatalytic properties." RSC Advances 6, no. 86 (2016): 83101–9. http://dx.doi.org/10.1039/c6ra12375a.

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We present a method called solution combustion synthesis by using metal acid radical ions to design nanostructured tungsten oxide with both stoichiometric and oxygen-vacancy-rich nonstoichiometric oxides with excellent photocatalytic activity.
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2

Dieckmann, Rüdiger. "Point Defects and Diffusion in Nonstoichiometric Metal Oxides." MRS Bulletin 16, no. 12 (1991): 27–32. http://dx.doi.org/10.1557/s0883769400055317.

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This article briefly reviews the relationships between point defects and ion diffusion in nonstoichiometric ionic crystals, with special emphasis on cubic oxides. It focuses on crystalline materials with negligibly small concentrations of nonequilibrium defects such as dislocations and grain boundaries. First, the concepts used to analyze the point defect structure and the diffusion of ions in nonstoichiometric crystals will be discussed. Then, specific oxides will be considered as examples. These oxides are manganosite, Mn1−ΔO, and spinels of the type Me3−δO4 with Fe and Mn cations, respectiv
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3

Lv, Min, Xiaoli Guo, Zhongpeng Wang, Liguo Wang, Qian Li, and Zhaoliang Zhang. "Synthesis and characterization of Co–Al–Fe nonstoichiometric spinel-type catalysts for catalytic CO oxidation." RSC Advances 6, no. 32 (2016): 27052–59. http://dx.doi.org/10.1039/c6ra02204a.

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4

Ezbiri, M., M. Takacs, D. Theiler, R. Michalsky та A. Steinfeld. "Tunable thermodynamic activity of LaxSr1−xMnyAl1−yO3−δ (0 ≤ x ≤ 1, 0 ≤ y ≤ 1) perovskites for solar thermochemical fuel synthesis". Journal of Materials Chemistry A 5, № 8 (2017): 4172–82. http://dx.doi.org/10.1039/c6ta06644e.

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5

Zhi-Chang, Wang. "Thermodynamics of nonstoichiometric multicomponent uranium oxides." Journal of Physics and Chemistry of Solids 48, no. 6 (1987): 527–33. http://dx.doi.org/10.1016/0022-3697(87)90047-3.

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Chaudhry, M. Iqbal. "A study of native oxides of β–SiC using Auger electron spectroscopy". Journal of Materials Research 4, № 2 (1989): 404–7. http://dx.doi.org/10.1557/jmr.1989.0404.

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Thermal and anodic oxide films of beta silicon carbide are analyzed using Auger electron spectroscopy. Auger depth-composition profiles are obtained in order to determine the chemical composition of the oxide films. The position and shape of silicon spectral peaks are used to estimate the chemical bonding of the oxide constituents. It is found that the wet thermal oxide is almost stoichiometric but contains about 14% carbon. Dry oxide, on the other hand, has less than 3% carbon but is highly nonstoichiometric. The carbon content in the anodic oxide is 12%. Anodic oxide films, like dry-oxide fi
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7

Bolotov, V. V., E. V. Knyazev, S. N. Nesov, K. E. Ivlev, I. V. Ponomareva, and E. A. Roslikova. "SELECTIVE SENSORY MULTILAYER STRUCTURES BASED ON TIN AND MANGANESE OXIDES." DYNAMICS OF SYSTEMS, MECHANISMS AND MACHINES 12, no. 3 (2024): 12–17. https://doi.org/10.25206/2310-9793-2024-12-3-12-17.

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The paper shows the possibility of creating a multilayer sensor structure based on nonstoichiometric tin oxide as a sensitive layer and manganese oxide as a filter layer. The structure and morphology of layers of tin and manganese oxides were characterized by scanning electron microscopy. The processes occurring on the surface of the sensor structure in interaction with molecules of analytic gases (nitrogen dioxide and hydrogen sulfide) have been studied by X-ray photoelectron spectroscopy. The conducted experiments of gas sensitivity showed a sectional sensitivity to hydrogen sulfide structur
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8

Prieto, O., and V. Rives. "Preparación y caracterización de óxidos de manganeso no estequiométricos." Boletín de la Sociedad Española de Cerámica y Vidrio 39, no. 3 (2000): 233–38. http://dx.doi.org/10.3989/cyv.2000.v39.i3.832.

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9

Islamov, Damir R., Vladimir N. Kruchinin, Vladimir Sh Aliev, et al. "Potential Fluctuation in RRAM Based on Non-Stoichiometric Hafnium Sub-Oxides." Advances in Science and Technology 99 (October 2016): 69–74. http://dx.doi.org/10.4028/www.scientific.net/ast.99.69.

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We study the structure of nonstoichiometric HfOx films with variable composition using methods of XPS, spectroscopic ellipsometry, and ab initio calculations. According to XPS and optical absorption experiment data HfOx consists of metal Hf and ~10-15% of nonstoichiometric hafnium sub-oxide HfOy (y<2). HfOy can be placed between HfO2 and Hf, inside HfO2, inside Hf. According to this model space fluctuations of chemical composition cause space fluctuations of bandgap in HfOx. We found that transport in such electronic systems is described by percolation theory. This approach can be applied t
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10

Mazunov, D. O. "Field Emission Properties of Nonstoichiometric Silicon Oxides." Telecommunications and Radio Engineering 63, no. 10 (2005): 891–901. http://dx.doi.org/10.1615/telecomradeng.v63.i10.50.

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11

Routbort, J. L., and G. W. Tomlins. "Atomic transport of oxygen in nonstoichiometric oxides." Radiation Effects and Defects in Solids 137, no. 1-4 (1995): 233–38. http://dx.doi.org/10.1080/10420159508222727.

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12

COSULTCHI, A., E. GARCÍAFIGUEROA, A. MUÑOZ-FLORES, et al. "DEPOSITION OF PETROLEUM HEAVY ORGANIC COMPOUNDS ON A LOW CARBON STEEL TUBING." Surface Review and Letters 06, no. 06 (1999): 1299–306. http://dx.doi.org/10.1142/s0218625x99001463.

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Reduction of petroleum wells production is often observed and related to the presence of solid deposits adhered on the internal wall of the tubing. A piece of tubing with organic material adhered on its surface was recovered from a Mexican southeastern region well. Its composition and morphology was studied applying scanning electron microscopy with X-ray energy dispersion spectroscopy (SEM-EDXS), X-ray diffraction (XRD) and reflection Fourier Transform Infrared Spectroscopy (FT-IRS). High-condensed hydrocarbons with hydroxyl and carboxyl functional groups and 6.4 wt% total sulfur were found.
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13

Tsvetkov, Dmitry S., Vladimir V. Sereda, Dmitry A. Malyshkin, Ivan L. Ivanov, and Andrey Yu Zuev. "Chemical lattice strain in nonstoichiometric oxides: an overview." Journal of Materials Chemistry A 10, no. 12 (2022): 6351–75. http://dx.doi.org/10.1039/d1ta08407k.

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This article reviews the state of the art – from the experimental and computational data available to the models, origins and possible uses – in the field of chemical strain of oxide materials (primarily those for elevated-temperature applications).
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14

CARTER, S. "Oxygen transport in selected nonstoichiometric perovskite-structure oxides." Solid State Ionics 53-56 (July 1992): 597–605. http://dx.doi.org/10.1016/0167-2738(92)90435-r.

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15

Mrowec, S. "On the defect structure in nonstoichiometric metal oxides." Ceramics International 11, no. 4 (1985): 134. http://dx.doi.org/10.1016/0272-8842(85)90111-7.

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16

Vaschilin, V. S., and Egor Krivonozhko. "STUDIES OF THE INFLUENCE OF THE." Actual directions of scientific researches of the XXI century: theory and practice 8, no. 2 (2020): 40–46. http://dx.doi.org/10.34220/2308-8877-2020-8-2-40-46.

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TiOх coatings are obtained by magnetron sputtering on a glass substrate, followed by vacuum photonic annealing to modify the coatings. Absolutely all samples obtained in the process of magnetron sputtering contained nonstoichiometric phases in their composition, and different O2 concentrations in plasma corresponded, in general, to different nonstoichiometric oxides, which may indicate the preferable formation of different TiO2 phases through different nonstoichiometric phases. It has been shown that with an increase in the oxygen concentration in the magnetron plasma, the structure of the coa
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17

Li, Junhao, Ningyi Jiang, Jinyun Liao, Yufa Feng, Quanbing Liu, and Hao Li. "Nonstoichiometric Cu0.6Ni0.4Co2O4 Nanowires as an Anode Material for High Performance Lithium Storage." Nanomaterials 10, no. 2 (2020): 191. http://dx.doi.org/10.3390/nano10020191.

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Transition metal oxide is one of the most promising anode materials for lithium-ion batteries. Generally, the electrochemical property of transition metal oxides can be improved by optimizing their element components and controlling their nano-architecture. Herein, we designed nonstoichiometric Cu0.6Ni0.4Co2O4 nanowires for high performance lithium-ion storage. It is found that the specific capacity of Cu0.6Ni0.4Co2O4 nanowires remain 880 mAh g−1 after 50 cycles, exhibiting much better electrochemical performance than CuCo2O4 and NiCo2O4. After experiencing a large current charge and discharge
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18

Li, Ming-Yen, Pouyan Shen, and Shyh-Lung Hwang. "Mesopores in nonstoichiometric oxides via oxyexsolution and Kirkendall effects." Journal of the European Ceramic Society 27, no. 6 (2007): 2355–59. http://dx.doi.org/10.1016/j.jeurceramsoc.2006.10.008.

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19

Huang, Chang-Ning, Jong-Shing Bow, Yuyuan Zheng, Shuei-Yuan Chen, New Jin Ho, and Pouyan Shen. "Nonstoichiometric Titanium Oxides via Pulsed Laser Ablation in Water." Nanoscale Research Letters 5, no. 6 (2010): 972–85. http://dx.doi.org/10.1007/s11671-010-9591-4.

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20

Cvetkovic, Vesna, Jelena Purenovic, and Aleksandra Zarubica. "Electrochemical behavior of the catalyst with kaolinite-bentonite substrate in water." Facta universitatis - series: Physics, Chemistry and Technology 3, no. 1 (2004): 41–52. http://dx.doi.org/10.2298/fupct0401041c.

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Due to the fact that oxidation-reduction potential and rH2 value of every water are its crucial features, numerous efforts have been made to use electrochemical means for water preparation. In this paper, we report the results of electrochemical influence research of magnesium-aluminium silicate catalyst, in the form of ceramics made of kaolinite and bentonite clays, on the rH2, pH and EOR changes of the waters of particular characteristics in the wanted direction. Particularly, the possibility of changing "active water" characteristics was investigated. The composite made with micro alloyed a
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21

Pura, Agnese, Kristaps Rubenis, Dmitrijs Stepanovs, Liga Berzina-Cimdina, and Jurijs Ozolins. "Semiconducting properties of nonstoichiometric TiO2-x ceramics." Processing and Application of Ceramics 6, no. 2 (2012): 91–95. http://dx.doi.org/10.2298/pac1202091p.

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Ceramics containing titanium oxides were prepared using extrusion technology and thermal treatment in two stages: sintering at normal atmospheric conditions at 1000 and 1200?C and annealing in high vacuum conditions at 950 and 1150?C. Electrical properties such as thermopower and electrical conductivity of cylindrical specimens have been studied at temperature range from the room temperature up to 350?C. Activation energy of the process has been determined from conductivity curves. Obtained thermopower values are in the range from 68 up to 105 mV at temperature gradient between the hot and col
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22

Lou, Jiahui, Zhenyu Tian, Yunyun Wu, et al. "Thermodynamic assessment of nonstoichiometric oxides for solar thermochemical fuel production." Solar Energy 241 (July 2022): 504–14. http://dx.doi.org/10.1016/j.solener.2022.05.008.

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23

Gritsenko, V. A. "Atomic structure of the amorphous nonstoichiometric silicon oxides and nitrides." Physics-Uspekhi 51, no. 7 (2008): 699–708. http://dx.doi.org/10.1070/pu2008v051n07abeh006592.

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24

NEMUDRY, A., and N. UVAROV. "Nanostructuring in composites and grossly nonstoichiometric or heavily doped oxides." Solid State Ionics 177, no. 26-32 (2006): 2491–94. http://dx.doi.org/10.1016/j.ssi.2006.05.002.

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25

Zhao, Hailei, Yunfei Cheng, Nansheng Xu та ін. "Oxygen permeability of A-site nonstoichiometric BaxCo0.7Fe0.2Nb0.1O3−δ perovskite oxides". Solid State Ionics 181, № 5-7 (2010): 354–58. http://dx.doi.org/10.1016/j.ssi.2009.12.016.

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26

Kim, Hoijoon, Taejin Park, Mirine Leem, et al. "Sulfidation characteristics of amorphous nonstoichiometric Mo-oxides for MoS2 synthesis." Applied Surface Science 535 (January 2021): 147684. http://dx.doi.org/10.1016/j.apsusc.2020.147684.

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27

Il’in, E. G., A. G. Beirakhov, V. G. Yarzhemskii, A. K. Buryak, and A. E. Gekhman. "Symmetric cage structures of isomers of nonstoichiometric lower molybdenum oxides." Doklady Chemistry 475, no. 2 (2017): 173–78. http://dx.doi.org/10.1134/s0012500817080080.

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28

McDaniel, A. H., A. Ambrosini, E. N. Coker, et al. "Nonstoichiometric Perovskite Oxides for Solar Thermochemical H2 and CO Production." Energy Procedia 49 (2014): 2009–18. http://dx.doi.org/10.1016/j.egypro.2014.03.213.

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29

Bratan, Veronica, Anca Vasile, Paul Chesler, and Cristian Hornoiu. "Insights into the Redox and Structural Properties of CoOx and MnOx: Fundamental Factors Affecting the Catalytic Performance in the Oxidation Process of VOCs." Catalysts 12, no. 10 (2022): 1134. http://dx.doi.org/10.3390/catal12101134.

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Volatile organic compound (VOC) abatement has become imperative nowadays due to their harmful effect on human health and on the environment. Catalytic oxidation has appeared as an innovative and promising approach, as the pollutants can be totally oxidized at moderate operating temperatures under 500 °C. The most active single oxides in the total oxidation of hydrocarbons have been shown to be manganese and cobalt oxides. The main factors affecting the catalytic performances of several metal-oxide catalysts, including CoOx and MnOx, in relation to the total oxidation of hydrocarbons have been
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30

Uzunova, Ellie L., Dimitar G. Klissurski, and Stella D. Nemska. "Surface studies of nano-dimensional particle size iron-manganese spinel mixed oxides." Canadian Journal of Chemistry 76, no. 10 (1998): 1361–64. http://dx.doi.org/10.1139/v98-186.

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Monophase binary iron-manganese spinel oxides of high dispersity are prepared by thermal decomposition of carbonate precursors in the limits 0.33 < Fe/Mn < 2, at temperatures 570-770 K. Interparticle meso- and macropores contribute to the surface morphology of the spinel oxides, composed from spherical-shaped particles with diameters in the range 7-12 nm. The cation distribution of manganese ferrite corresponds to Mn0.85Fe0.15[Mn0.14Fe1.86]O4+δ. Surface analysis by ESCA reveals high concentration of nonstoichiometric oxygen and presence of Mn(III) and Mn(IV) is indicated in the X-ray pho
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31

Kawada, Tatsuya. "(Invited) Chemo-Mechanical Coupling Phenomena in Solid Oxide Fuel Cells." ECS Meeting Abstracts MA2018-01, no. 32 (2018): 1930. http://dx.doi.org/10.1149/ma2018-01/32/1930.

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The materials and the structure of solid oxide fuel cells are designed to avoid thermo-mechanical damages under various operation conditions. However, inherent risk of chemo-mechanical failures are still not fully understood. This paper aims to review the recent works related to this topic, and to address some issues which have not been widely recognized. The coupling of chemistry and mechanics are classified into four types, i.e. (1) chemically driven strain, (2) chemically modified mechanical properties, (3) mechanically driven chemical reactions, and (4) mechanically modified chemical (phys
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32

Seidman, David, and Donglu Shi. "Point Defects in Materials Part II: Applications to Different Materials Problems." MRS Bulletin 16, no. 12 (1991): 18–21. http://dx.doi.org/10.1557/s0883769400055299.

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This issue of the MRS Bulletin follows up on the November issue's five articles on point defect phenomena in a wide range of materials with five more articles on point defects. The present articles emphasize the behavior of different phenomena in various materials—nonstoichiometric metal oxides, intermetallic compounds, type II superconductors and semiconductors—in terms of fundamental properties of point defects. Again, point defects is the unifying theme but the emphasis shifts to material behavior.This issue begins with Marshall Stoneham's article on the roles theory plays in predicting and
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33

Умирзаков, Б. Е., М. К. Рузибаева, З. А. Исаханов та Р. М. Ёркулов. "Формирование наноразмерных пленок SiO-=SUB=-2-=/SUB=- на поверхности свободной пленочной системы Si/Cu при имплантации ионов O-=SUB=-2-=/SUB=--=SUP=-+-=/SUP=-". Журнал технической физики 89, № 6 (2019): 935. http://dx.doi.org/10.21883/jtf.2019.06.47643.210-18.

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AbstractThe composition and parameters of energy bands in thin SiO_2 films grown on the surface of a free Si/Cu film system have been studied. It has been shown that unlike SiO_2 films grown on thick films, the value of E _ g for thin SiO_2 films is no higher than ~4.1 eV. This is explained by the presence of Si impurity atoms and nonstoichiometric oxides in the SiO_2 film, which arise because of the impossibility of heating the system above 700 K.
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34

Grzesik, Zbigniew. "Experimental Errors in Studying the Defect Mobility in Nonstoichiometric Metal Oxides." Defect and Diffusion Forum 237-240 (April 2005): 139–44. http://dx.doi.org/10.4028/www.scientific.net/ddf.237-240.139.

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35

Tetot, R., and G. Boureau. "Defect interactions, statistical thermodynamic and electronic transport in ionic nonstoichiometric oxides." Radiation Effects and Defects in Solids 137, no. 1-4 (1995): 239–46. http://dx.doi.org/10.1080/10420159508222728.

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Li, Qinghao, Ruimin Qiao, Apurva Mehta, et al. "Amorphous nonstoichiometric oxides with tunable room-temperature ferromagnetism and electrical transport." Science Bulletin 65, no. 20 (2020): 1718–25. http://dx.doi.org/10.1016/j.scib.2020.06.035.

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Yapp, Crayton J., and Harald Poths. "Stable hydrogen isotopes in iron oxides: 111. Nonstoichiometric hydrogen in goethite." Geochimica et Cosmochimica Acta 59, no. 16 (1995): 3405–12. http://dx.doi.org/10.1016/0016-7037(95)00220-t.

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38

McDaniel, Anthony H. "Renewable energy carriers derived from concentrating solar power and nonstoichiometric oxides." Current Opinion in Green and Sustainable Chemistry 4 (April 2017): 37–43. http://dx.doi.org/10.1016/j.cogsc.2017.02.004.

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39

BHAGAT, S., and R. KUMAR. "ChemInform Abstract: Reactivity and Electric Transport of Nonstoichiometric Rare Earth Oxides." ChemInform 23, no. 41 (2010): no. http://dx.doi.org/10.1002/chin.199241263.

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40

Sarikov, Andrey. "Thermodynamic Theory of Phase Separation in Nonstoichiometric Si Oxide Films Induced by High-Temperature Anneals." Nanomanufacturing 3, no. 3 (2023): 293–314. http://dx.doi.org/10.3390/nanomanufacturing3030019.

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High-temperature anneals of nonstoichiometric Si oxide (SiOx, x < 2) films induce phase separation in them, with the formation of composite structures containing amorphous or crystalline Si nanoinclusions embedded in the Si oxide matrix. In this paper, a thermodynamic theory of the phase separation process in SiOx films is proposed. The theory is based on the thermodynamic models addressing various aspects of this process which we previously developed. A review of these models is provided, including: (i) the derivation of the expressions for the Gibbs free energy of Si oxides and Si/Si oxid
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41

Pirzada, Mohsin, Robin W. Grimes, John Maguire, and Kurt Sickafus. "Predictions of strontium accommodation in A2B2O7 pyrochlores." Journal of Materials Research 17, no. 8 (2002): 2041–47. http://dx.doi.org/10.1557/jmr.2002.0302.

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A2B2O7 pyrochlore oxides are being considered as potential host materials for the immobilization of fission products. It is therefore important to establish the relative ability of these compounds to accommodate fission product ions. We address this issue by using computer simulations to predict the structures and relative equilibrium energies associated with solution of Sr2+ over an extensive compositional range. Results indicate that strontium is accommodated via substitution for A host cations with oxygen vacancy compensation. This results in a nonstoichiometric composition. Optimum composi
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42

Chizhik, Stanislav A., and Alexander P. Nemudry. "Nonstoichiometric oxides as a continuous homologous series: linear free-energy relationship in oxygen exchange." Physical Chemistry Chemical Physics 20, no. 27 (2018): 18447–54. http://dx.doi.org/10.1039/c8cp02924e.

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A novel methodology based on the continuous homologous series is suggested for the analysis of oxygen exchange in practically important non-stoichiometric oxides. Linear free-energy relationship is established analogous to Brønsted equation or Taffel plot.
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Kawada, Tatsuya, Chikara Sekizawa, Ryuta Sato, Satoshi Watanabe, and Keiji Yashiro. "(Invited) Potentiometric Measurements of Defect Equilibrium of Nonstoichiometric Oxides Under Mechanical Load." ECS Meeting Abstracts MA2020-01, no. 40 (2020): 1782. http://dx.doi.org/10.1149/ma2020-01401782mtgabs.

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Redl, Franz X., Charles T. Black, Georgia C. Papaefthymiou, et al. "Magnetic, Electronic, and Structural Characterization of Nonstoichiometric Iron Oxides at the Nanoscale." Journal of the American Chemical Society 126, no. 44 (2004): 14583–99. http://dx.doi.org/10.1021/ja046808r.

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Tuller, H. "Semiconduction and mixed ionic-electronic conduction in nonstoichiometric oxides: impact and control." Solid State Ionics 94, no. 1-4 (1997): 63–74. http://dx.doi.org/10.1016/s0167-2738(96)00585-1.

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46

Gu, Zhenao, Le Zhang, Bo Wen, et al. "Efficient design principle for interfacial charge separation in hydrogen-intercalated nonstoichiometric oxides." Nano Energy 53 (November 2018): 887–97. http://dx.doi.org/10.1016/j.nanoen.2018.09.019.

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47

Gu, Xiang-Kui, Samji Samira, and Eranda Nikolla. "Oxygen Sponges for Electrocatalysis: Oxygen Reduction/Evolution on Nonstoichiometric, Mixed Metal Oxides." Chemistry of Materials 30, no. 9 (2018): 2860–72. http://dx.doi.org/10.1021/acs.chemmater.8b00694.

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