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Academic literature on the topic 'Nonmetallic crystals'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Nonmetallic crystals"

1

Vinetskii, V. L., �. A. Pashitskii, and V. A. Yanchuk. "Bipolarons in nonmetallic crystals." Journal of Structural Chemistry 27, no. 6 (1987): 1004–8. http://dx.doi.org/10.1007/bf00755217.

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Hirao, Kiyoshi, Koji Watari, Hiroyuki Hayashi, and Mikito Kitayama. "High Thermal Conductivity Silicon Nitride Ceramic." MRS Bulletin 26, no. 6 (June 2001): 451–55. http://dx.doi.org/10.1557/mrs2001.115.

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Since the confirmation that nonmetallic single crystals with a diamond-like structure, such as SiC, BP, and AlN, have high intrinsic thermal conductivities of over 300 W m−1 K−1,1,2 a great deal of effort has been focused on the development of nonoxide polycrystalline ceramics with high thermal conductivity.
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Kovarskii, V. A. "High-order optical-harmonic generation in films of nonmetallic crystals." Journal of Experimental and Theoretical Physics 85, no. 1 (July 1997): 48–51. http://dx.doi.org/10.1134/1.558314.

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Pereira, A. S., and J. A. H. da Jornada. "Environment and time dependent hardness in zirconia." Journal of Materials Research 9, no. 5 (May 1994): 1059–62. http://dx.doi.org/10.1557/jmr.1994.1059.

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The microhardness of monoclinic ZrO2 single-crystals was measured in different environments: air, water, and toluene. An indentation creep process at room temperature was observed for the measurements in moist media pointing for a water-activated plastic relaxation mechanism. This effect is discussed employing the models previously proposed to explain similar behaviors in ZrO2 and other nonmetallic materials. A possible correlation with the conditions for the nucleation in phase transitions is proposed.
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Howe, J. M., and S. J. Rozeveld. "Effect of crystal and beam tilt on simulated high-resolution TEM images of interfaces." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 358–59. http://dx.doi.org/10.1017/s0424820100174928.

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It is well known that only a few milliradians of crystal or beam tilt can produce image artifacts in HRTEM images of perfect crystals. One important application of HRTEM is for determining the atomic structures of interfaces. While it is intuitive that alignment of an interface parallel to the electron beam should be critical for obtaining reliable HRTEM images of interfaces, a systematic study of the effects of crystal and beam tilt on HRTEM images of interfaces has not been performed.In this investigation, the effects of crystal and beam tilt on HRTEM images of planar, coherent interfaces were determined by multislice image simulations. Interfaces in metallic systems ranging from simple twin boundaries in f.c.c. Al and b.c.c. Ti to relatively complex interphase boundaries between ordered h.c.p. and b.c.c. phases in the Ti-Al system were examined and compared. Although this study was limited to coherent interfaces, similar effects are expected to occur in comparable nonmetallic systems such as semiconductors and ceramics and for less coherent interfaces as well.
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Kolontsova, E. V., A. E. Korneev, I. S. Pogosova, and S. V. Reďko. "On the criterion and mechanism of radiation-induced structure changes in nonmetallic crystals." Radiation Effects 100, no. 1-2 (December 1986): 31–38. http://dx.doi.org/10.1080/00337578608208733.

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7

Volcheck, V. S., M. S. Baranava, and V. R. Stempitsky. "Thermal conductivity of wurtzite gallium nitride." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 67, no. 3 (October 8, 2022): 285–97. http://dx.doi.org/10.29235/1561-8358-2022-67-3-285-297.

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This paper reviews the theoretical and experimental works concerning one of the most important parameters of wurtzite gallium nitride – thermal conductivity. Since the heat in gallium nitride is transported almost exclusively by phonons, its thermal conductivity has a temperature behavior typical of most nonmetallic crystals: the thermal conductivity increases proportionally to the third power of temperature at lower temperatures, reaches its maximum at approximately 1/20 of the Debye temperature and decreases proportionally to temperature at higher temperatures. It is shown that the thermal conductivity of gallium nitride (depending on fabrication process, crystallographic direction, concentration of impurity and other defects, isotopical purity) varies significantly, emphasizing the importance of determining this parameter for the samples that closely resemble those being used in specific applications. For isotopically pure undoped wurtzite gallium nitride, the thermal conductivity at room temperature has been estimated as high as 5.4 W/(cm·K). The maximum room temperature value measured for bulkshaped samples of single crystal gallium nitride has been 2.79 W/(cm·K).
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Ma, Yanbao. "A transient ballistic–diffusive heat conduction model for heat pulse propagation in nonmetallic crystals." International Journal of Heat and Mass Transfer 66 (November 2013): 592–602. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2013.06.069.

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9

Kootstra, F., P. L. de Boeij, and J. G. Snijders. "Application of time-dependent density-functional theory to the dielectric function of various nonmetallic crystals." Physical Review B 62, no. 11 (September 15, 2000): 7071–83. http://dx.doi.org/10.1103/physrevb.62.7071.

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Murlieva, Zh Kh. "Linear Dependence of the Phonon Thermal Resistance of Nonmetallic Crystals on the Isobaric Thermal Strain." Physics of the Solid State 45, no. 12 (2003): 2276. http://dx.doi.org/10.1134/1.1635497.

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Books on the topic "Nonmetallic crystals"

1

1930-, Eisenmenger W., and Kapli͡a︡nskiĭ A. A, eds. Nonequilibrium phonons in nonmetallic crystals. Amsterdam: North-Holland, 1986.

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2

M, Stoneham A., ed. Defects and defect processes in nonmetallic solids. New York: Wiley, 1985.

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ZnO bao mo zhi bei ji qi guang, dian xing neng yan jiu. Shanghai Shi: Shanghai da xue chu ban she, 2010.

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Stoneham, A. M., and W. Hayes. Defects and Defect Processes in Nonmetallic Solids. Dover Publications, Incorporated, 2012.

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Hayes, W., and A. M. Stoneham. Defects and Defect Processes in Nonmetallic Solids. Dover Publications, 2004.

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Stoneham, A. M., and W. Hayes. Defects and Defect Processes in Nonmetallic Solids. Dover Publications, Incorporated, 2012.

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Henderson, B. Defects and Their Structure in Nonmetallic Solids. Springer, 2013.

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8

Henderson, B. Defects and Their Structure in Nonmetallic Solids. Springer, 2013.

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Book chapters on the topic "Nonmetallic crystals"

1

Herz, Norman, and Ervan G. Garrison. "Metallic Minerals and Archaeological Geology." In Geological Methods for Archaeology. Oxford University Press, 1998. http://dx.doi.org/10.1093/oso/9780195090246.003.0018.

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Economic geology had its inception in the ancient utilization of rocks and minerals. The first economic materials were nonmetallic and include flint, quartz, diabase, rhyolite, obsidian, jade, and other stones, which were sought for weapons, implements, adornment, and even art. Beginning with the Upper Paleolithic Aurignacian period, clay began to be widely used for simple figurines, then brick and finally pottery. S. H. Ball identifies 13 varieties of minerals—chalcedony, quartz, rock crystal, serpentine, obsidian, pyrite, jasper, steatite, amber, jadite, calcite, amethyst, and fluorspar—as economic within the Paleolithic. Add to this list the use of ochres and mineral paints together with nephrite, sillimanite, and turquoise. In the standard reference on the nonmetallic deposits, "Industrial Minerals and Rocks", 6th edition published in 1994, deposits are classified by use and the minerals and rocks described as commodities. The fourteen use groups include such items as abrasives, constructions materials, and gem materials; the 48 commodities include clay, diamonds, feldspar, etc. Metalliferous minerals as ore deposits are unevenly distributed throughout the world. The formation of a mineral deposit is an episode or series of episodes in the geological history of a region and reflects three broad categories: (1) igneous activity, (2) sedimentary processes, and (3) metamorphism. Table 12.1 summarizes general features of the three categories of mineral deposits. Admixtures of metals are by far the most common form of mineral deposits. Gold, silver, and copper occur either as native metals or admixed with other metals and compounds. Most ore deposits are actually mixtures of metals: silver commonly with lead, zinc with cadmium, iron with copper. Many metallic ore deposits are products of igneous activity. Conditions change in the magma chamber as the principal rock-forming minerals crystallize, temperature falls as the magma cools, pressure is lowered as the magma rises in the crust, and volatiles increase in the magma chamber.
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Conference papers on the topic "Nonmetallic crystals"

1

Beckerle, J. D., M. P. Casassa, R. R. Cavanagh, E. J. Heilweil, and J. C. Stephenson. "Ultrafast laser studies of vibrational relaxation on surfaces: CO (v = 1)/Pt(111)." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.fa2.

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Energy transfer at surfaces is important in physical processes such as sticking, desorption, diffusion, and the chemistry of oxidation, catalysis, and electronic materials processing. Early information on rates and mechanisms of vibrational energy dissipation came from theory or were inferred from linewidths of optical spectra. We have used tunable subpicosecond IR laser pulses in pump-probe experiments to obtain time-resolved information about the vibrational energy relaxation time (T1) and homogeneous dephasing time (T2) for the high-frequency CO (v = 1) stretch mode of an ordered monolayer of CO on the surface of a Pt(111) single crystal. The observed Ti ≈ 4 ps at low temperatures is slower than would be inferred from the IR bandwidth for top-site CO. Transient IR spectra of the excited adlayer suggest that the CO (v = 1) → (v = 2) band is anharmonic- ally shifted from the fundamental v = 0 → v = 1 transition by only 4-5 cm−1. These results are compared with the long values of T for OH, NH, or SiH stretch modes on nonmetallic surfaces, and to spectral data and time-resolved studies of very fast CO-CO coupling in metal carbonyl molecules and very short T1 for CO (v = 1) chemisorbed on amorphous metal particles. These comparisons, as well as theory, suggest the important energy relaxation mechanism for CO (v = 1 )/Pt(111) is coupling of the vibrating dipole to metal free electrons, i.e., damping by electron-hole pair formation.
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