Academic literature on the topic 'Nonmetallic crystals'

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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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2

Hirao, Kiyoshi, Koji Watari, Hiroyuki Hayashi, and Mikito Kitayama. "High Thermal Conductivity Silicon Nitride Ceramic." MRS Bulletin 26, no. 6 (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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3

Kovarskii, V. A. "High-order optical-harmonic generation in films of nonmetallic crystals." Journal of Experimental and Theoretical Physics 85, no. 1 (1997): 48–51. http://dx.doi.org/10.1134/1.558314.

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4

Pereira, A. S., and J. A. H. da Jornada. "Environment and time dependent hardness in zirconia." Journal of Materials Research 9, no. 5 (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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5

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 (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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6

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 (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 (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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8

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 (2000): 7071–83. http://dx.doi.org/10.1103/physrevb.62.7071.

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10

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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