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Journal articles on the topic 'Width of Glass Transition'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Schmelzer, Jürn W. P., Timur V. Tropin, Vladimir M. Fokin, et al. "Correlation between glass transition temperature and the width of the glass transition interval." International Journal of Applied Glass Science 10, no. 4 (2019): 502–13. http://dx.doi.org/10.1111/ijag.13240.

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2

CONIGLIO, ANTONIO. "FRACTALS IN THE GLASS TRANSITION." Fractals 04, no. 03 (1996): 349–54. http://dx.doi.org/10.1142/s0218348x96000467.

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The static and fractal properties of the frustrated percolation model are investigated. This model, which contains frustration as an essential ingredient, displays glassy behavior at high density or low temperature and exhibits two transitions: a percolation transition at a temperature Tp with critical exponents of the ferromagnetic s=1/2 state Potts model, and a second transition at a lower temperature Tg in the same universality class of the Ising spin glass model.

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3

Brüning, Ralf, and Mark Sutton. "Fragility of glass-forming systems and the width of the glass transition." Journal of Non-Crystalline Solids 205-207 (October 1996): 480–84. http://dx.doi.org/10.1016/s0022-3093(96)00264-5.

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4

Wang, Yu, Xiao Bing Ren, and Kazuhiro Otsuka. "Strain Glass: Glassy Martensite." Materials Science Forum 583 (May 2008): 67–84. http://dx.doi.org/10.4028/www.scientific.net/msf.583.67.

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“Glass”, a frozen disordered-state, has been found in areas as diverse as amorphous solids, magnetic alloys, ferroelectrics, superconductors, and even in models of biological evolutions. In the present review we introduce a new class of glass–the “strain-glass”, which was discovered very recently. Strain glass is derived from a martensitic system, where the local-strain is frozen in disordered configuration. The first example of strain glass was found in the well-studied Ni-rich Ti50-xNi50+x martensitic system in its “non-transforming” composition regime (x>1.5). Contrasting to the familiar

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5

Torregrosa Cabanilles, Constantino, José Molina-Mateo, Roser Sabater i Serra, José María Meseguer-Dueñas, and José Luis Gómez Ribelles. "Non-Markovian Methods in Glass Transition." Polymers 12, no. 9 (2020): 1997. http://dx.doi.org/10.3390/polym12091997.

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A model for the heterogeneity of local dynamics in polymer and other glass-forming materials is provided here. The fundamental characteristics of the glass transition phenomenology emerge when simulating a condensed matter open cluster that has a strong interaction with its heterogeneous environment. General glass transition features, such as non-exponential structural relaxations, the slowing down of relaxation times with temperature and specific off-equilibrium glassy dynamics can be reproduced by non-Markovian dynamics simulations with the minimum computer resources. Non-Markovian models ar

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6

XIA, L., C. L. JO, and Y. D. DONG. "GLASS FORMING ABILITY OF HARD MAGNETIC Nd55Al20Fe25 BULK GLASSY ALLOY WITH DISTINCT GLASS TRANSITION." International Journal of Modern Physics B 19, no. 22 (2005): 3493–500. http://dx.doi.org/10.1142/s021797920503219x.

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Nd 55 Al 20 Fe 25 bulk sample was prepared in the shape of rods 3 mm in diameter by suction casting. The sample exhibits typical amorphous characters in XRD pattern, distinct glass transition in DSC traces and hard magnetic properties. The distinct glass transition, which is invisible in DSC traces of previously reported Nd — Al — Fe ternary BMGs, allows us to investigate the glass forming ability (GFA) of Nd 55 Al 20 Fe 25 alloy using the reduced glass transition temperature Trg and the recently defined parameter γ. However, it is found that the obtained diameter of the Nd 55 Al 20 Fe 25 glas

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7

Kim, Jong Sun, Kyung Hwan Yoon, and Julia A. Kornfield. "Measurement of Stress-Optical Coefficients of COC’s with Different Composition." Key Engineering Materials 326-328 (December 2006): 183–86. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.183.

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Rheo-optical and mechanical properties of Cyclic Olefin Copolymers(COC’s) with different composition have been investigated across the glass transition temperature. Accurate measurement of stress or strain-optical coefficients and elastic modulus data across the glass transition are essential for predicting optical anisotropy in many optical products like pickup lenses and waveguides in LCD backlight unit since the material of these products have both flow and thermal history from the melt to glass. To obtain stress-optic behavior in the wide frequency region including rubbery, glassy and glas

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8

Ma, H., E. Ma, and J. Xu. "A new Mg65Cu7.5Ni7.5Zn5Ag5Y10 bulk metallic glass with strong glass-forming ability." Journal of Materials Research 18, no. 10 (2003): 2288–91. http://dx.doi.org/10.1557/jmr.2003.0319.

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We report a new Mg-based bulk metallic glass-forming alloy: Mg65Cu7.5Ni7.5Zn5 Ag5Y10. The alloy exhibits a glass-forming ability significantly stronger than all previously discovered Mg-based glass formers. Fully glassy rods 9 mm in diameter can be obtained by using copper mold casting. The critical cooling rate for glass formation was estimated to be <50 Ks−1. The reduced glass-transition temperature (Trg) of the glass was determined to be 0.59.

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9

Lewis, K. L. M., J. A. Myers, F. Fuller, P. F. Tekavec, and J. P. Ogilvie. "Two-dimensional electronic spectroscopy signatures of the glass transition." Spectroscopy 24, no. 3-4 (2010): 393–97. http://dx.doi.org/10.1155/2010/342156.

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Two-dimensional electronic spectroscopy is a sensitive probe of solvation dynamics. Using a pump–probe geometry with a pulse shaper [Optics Express15(2007), 16681-16689;Optics Express16(2008), 17420-17428], we present temperature dependent 2D spectra of laser dyes dissolved in glass-forming solvents. At low waiting times, the system has not yet relaxed, resulting in a spectrum that is elongated along the diagonal. At longer times, the system loses its memory of the initial excitation frequency, and the 2D spectrum rounds out. As the temperature is lowered, the time scale of this relaxation gro

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10

Сандитов, Д. С., В. В. Мантатов та С. Ш. Сангадиев. "Oбобщенный кинетический критерий перехода жидкость--стекло". Физика твердого тела 62, № 10 (2020): 1706. http://dx.doi.org/10.21883/ftt.2020.10.49925.082.

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Using the model of delocalized atoms, a substantiation and generalization of the Schmelzer glass transition criterion is proposed. In contrast to the Bartenev and Volkenstein - Ptitsyn approaches, in the generalized kinetic glass transition criterion, along with the relaxation time and the cooling rate of the melt, the glass transition temperature and an almost universal dimensionless constant appear, which is determined by the fraction of the fluctuation volume frozen at the glass transition temperature. The idea is developed that the liquid goes into a glassy state when its cooling rate q re

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11

Busiello, G. "Glass Transition in Quantum Dipole Glass Model." Advanced Materials Research 590 (November 2012): 138–42. http://dx.doi.org/10.4028/www.scientific.net/amr.590.138.

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We give a description of the phase transition in an ensemble of the electric dipole with internal degrees of freedom in dielectric glass model.The model predicts a freezing of the random projections of the electric dipole moments. The low temperature phase transition from disordered paraelectric phase to the electric dipole orientational like glass phase is considered

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12

Chudinov, S., S. Stizza, B. Kościelska, L. Murawski, W. Sadowski, and R. J. Barczyński. "Superconducting Properties of Bi-Sr-Ca-Cu-O Crystallized Glass." International Journal of Modern Physics B 13, no. 09n10 (1999): 985–89. http://dx.doi.org/10.1142/s0217979299000837.

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This paper reports the crystallization and superconducting properties of Bi 4 Sr 3 Ca 3 Cu 4 O x glass-ceramics. The glass was prepared using the conventional melt-quenching method. X-ray diffraction pattern has shown that the annealing at temperature of 800°C converted the glass into glass-ceramics with Bi 2 Sr 2 CaCu 2 O x superconducting phase (2212-phase). The superconducing transition exhibits the change in the slope that is characteristic for two different superconducting phases. It is observed that T c (zero) increases from 20 K to 80 K with increasing time of annealing. The influence o

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13

Zhang, L. C., Z. Q. Shen, and J. Xu. "Glass formation in a (Ti, Zr, Hf)–(Cu, Ni, Ag)–Al high-order alloy system by mechanical alloying." Journal of Materials Research 18, no. 9 (2003): 2141–49. http://dx.doi.org/10.1557/jmr.2003.0300.

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In this work, glass formation under high-energy ball milling was investigated for a (Ti0.33Zr0.33Hf0.33)50(Ni0.33Cu0.33Ag0.33)40Al10 high-order alloy system with equiatomic substitution for early and late transition-metal contents. For comparison, an amorphous alloy ribbon with the same composition was prepared using the melt-spinning method as well. Structural features of the samples were characterized using x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. Mechanical alloying resulted in a glassy alloy similar to that obtained by melt spinning. Howev

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14

Boucher, Virginie M., Daniele Cangialosi, Angel Alegría, and Juan Colmenero. "Reaching the ideal glass transition by aging polymer films." Physical Chemistry Chemical Physics 19, no. 2 (2017): 961–65. http://dx.doi.org/10.1039/c6cp07139b.

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15

Zhang, Yue, Shachi Katira, Andrew Lee, et al. "Kinetically controlled glass transition measurement of organic aerosol thin films using broadband dielectric spectroscopy." Atmospheric Measurement Techniques 11, no. 6 (2018): 3479–90. http://dx.doi.org/10.5194/amt-11-3479-2018.

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Abstract. Glass transitions from liquid to semi-solid and solid phase states have important implications for reactivity, growth, and cloud-forming (cloud condensation nuclei and ice nucleation) capabilities of secondary organic aerosols (SOAs). The small size and relatively low mass concentration of SOAs in the atmosphere make it difficult to measure atmospheric SOA glass transitions using conventional methods. To circumvent these difficulties, we have adapted a new technique for measuring glass-forming properties of atmospherically relevant organic aerosols. Aerosol particles to be studied ar

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16

Verma, Arvind Kumar, Anchal Srivastava, R. K. Shukla, and K. C. Dubey. "Thermal Behavior of Chalcogenide glasses Te90Se10 and Se90Te10." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 7, no. 02 (2015): 113–18. http://dx.doi.org/10.18090/samriddhi.v7i2.8636.

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In the present research work melt quenching method has been adopted to prepare the glassy Te-rich (Te90Se10) and Se-rich (Se90Te10 ) Chalcogenide at a pressure of 10-2 Torr with constant Temperature at 1000°C for 8 hours. Devitrification characteristics of the pure glassy Chalcogenide Te90Se10 and Se90Te90 were investigated by using Differential scanning Calorimetry (DSC) 4000 Perkin Elmer. All the measurements carried out at fixed heating rate 10 0C/min under non-isothermal conditions. The Glass transition temperature (Tg) and other thermal properties were examined by temperature modulated di

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17

Vivek, Skanda, Colm P. Kelleher, Paul M. Chaikin, and Eric R. Weeks. "Long-wavelength fluctuations and the glass transition in two dimensions and three dimensions." Proceedings of the National Academy of Sciences 114, no. 8 (2017): 1850–55. http://dx.doi.org/10.1073/pnas.1607226113.

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Phase transitions significantly differ between 2D and 3D systems, but the influence of dimensionality on the glass transition is unresolved. We use microscopy to study colloidal systems as they approach their glass transitions at high concentrations and find differences between two dimensions and three dimensions. We find that, in two dimensions, particles can undergo large displacements without changing their position relative to their neighbors, in contrast with three dimensions. This is related to Mermin–Wagner long-wavelength fluctuations that influence phase transitions in two dimensions.

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18

Cao, Cong, Jianshan Liao, Victor Breedveld, and Eric R. Weeks. "Rheology finds distinct glass and jamming transitions in emulsions." Soft Matter 17, no. 9 (2021): 2587–95. http://dx.doi.org/10.1039/d0sm02097d.

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The yield stress for emulsion samples with small droplets shows two transitions, a glass transition at volume fraction 0.58 and a jamming transition at 0.64. For a sample with larger droplets, we only see a jamming transition.

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19

Su, Ming Horng, and Hung Chang Chen. "A Molecular Dynamics Investigation into the Cooling Characteristics of Ni and Cu Alloys at High Pressure." Materials Science Forum 505-507 (January 2006): 1093–98. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.1093.

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This paper studies the phase transitions of Cu and Ni alloys as they cool from melting temperature to room temperature under high-pressure conditions. The interatomic forces acting between the atoms are modeled by the tight-binding potential. Control over the environmental pressure and the cooling temperature is maintained by a canonical ensemble (N, P, T) system. The numerical results confirm that the metal phase transition is influenced significantly by the pressure conditions, even in the case of pure Cu and Ni metals. Three specific transition pathways are identified for the Cu and Ni allo

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20

Reis, Ana Karoline dos, Francisco Maciel Monticelli, Roberta Motta Neves, Luis Felipe de Paula Santos, Edson Cocchieri Botelho, and Heitor Luiz Ornaghi Jr. "Creep behavior of polyetherimide semipreg and epoxy prepreg composites: Structure vs. property relationship." Journal of Composite Materials 54, no. 27 (2020): 4121–31. http://dx.doi.org/10.1177/0021998320927774.

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In the present study, the creep behavior of polyetherimide semipreg and epoxy prepreg composites was studied using dynamic mechanical analyzer and focused on structure vs. property relationships in glassy, glass transition, and elastomeric regions. The main contribution to the field is to study pre-impregnated materials concerning creep behavior, mainly based on different analytical models, and microstructure. Two different reinforcements were used (carbon fiber and glass fiber) for each matrix. Findley, Burger, and Weibull analytical models were applied with an excellent fit for the most of t

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21

Farzaneh, S., and A. Tcharkhtchi. "Viscoelastic Properties of Polypropylene Reinforced with Mica in and Transition Zones." International Journal of Polymer Science 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/427095.

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The viscoelastic properties of mica-reinforced polypropylene (PP) was studied in temperature range between −30°C and 120°C. WLF equation permits determining the free volume fraction in and transitions regions. It was shown that the value of this parameter is lower for transition, indicating that the free volume and thermal expansion of region is more than that of region. At a 40% loading level, it was shown that the storage and loss modulus of mica-filled PP increases dramatically (in comparison with the pure polypropylene). The relative modulus does not change significantly at glassy state bu

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22

Phillips, J. C. "Universal non-Landau, self-organized, lattice disordering percolative dopant network sub-Tc phase transition in ceramic superconductors." Proceedings of the National Academy of Sciences 106, no. 37 (2009): 15534–37. http://dx.doi.org/10.1073/pnas.0908634106.

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Ceramic superconductors (cuprates, pnictides, etc.) exhibit universal features in both Tcmax and in their planar lattice disordering measured by EXAFS, as reflected by three phase transitions. The two highest temperature transitions are known to be associated with formation of Jahn–Teller pseudogaps and superconductive gaps, with corresponding Landau order parameters, but no new gap is associated with the third transition below Tc, and its origin is mysterious. It is argued that the third subTc transition is a dopant glass transition, which is remarkably similar to topological transitions prev

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23

Yoon, Heedong, and Gregory B. McKenna. "Testing the paradigm of an ideal glass transition: Dynamics of an ultrastable polymeric glass." Science Advances 4, no. 12 (2018): eaau5423. http://dx.doi.org/10.1126/sciadv.aau5423.

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A major challenge to understanding glass-forming materials is obtaining equilibrium data far below the laboratory glass transition temperatureTg. The challenge arises because it takes geologic aging times to achieve the equilibrium glassy state when temperatures are well belowTg. Here, we finesse this problem through measurements on an ultrastable amorphous Teflon with fictive temperatureTfnear to its Kauzmann temperatureTK. In the window betweenTfandTg, the material has a lower molecular mobility than the equilibrium state because of its low specific volume and enthalpy. Our measurements show

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24

Henschke, Olaf, Frank Köller, and Manfred Arnold. "Polyolefins with high glass transition temperatures." Macromolecular Rapid Communications 18, no. 7 (1997): 617–23. http://dx.doi.org/10.1002/marc.1997.030180712.

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25

Franz, S., M. Mézard, F. Ricci-Tersenghi, M. Weigt, and R. Zecchina. "A ferromagnet with a glass transition." Europhysics Letters (EPL) 55, no. 4 (2001): 465–71. http://dx.doi.org/10.1209/epl/i2001-00438-4.

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26

Wunder, Bernd. "Abrupt high/low-transition in flux-grown Mg-cordierite single crystals with hour-glass structure." European Journal of Mineralogy 3, no. 5 (1991): 809–18. http://dx.doi.org/10.1127/ejm/3/5/0809.

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27

Yamamoto, Tokujiro, Kouichi Hayashi, Ichiro Seki, Kosuke Suzuki, and Masahisa Ito. "Pd-based metallic glass with a low glass transition temperature." Journal of Non-Crystalline Solids 359 (January 2013): 46–50. http://dx.doi.org/10.1016/j.jnoncrysol.2012.09.029.

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28

Zhao, Z. F., Z. Zhang, P. Wen, et al. "A highly glass-forming alloy with low glass transition temperature." Applied Physics Letters 82, no. 26 (2003): 4699–701. http://dx.doi.org/10.1063/1.1588367.

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29

Modgil, Vivek, and V. S. Rangra. "Effect of Sn Addition on Thermal and Optical Properties of Pb9Se71Ge20-xSnx (8≤x≤12) Glass." Journal of Materials 2014 (March 27, 2014): 1–8. http://dx.doi.org/10.1155/2014/318262.

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Study of thermal and optical parameters of Pb9Se71Ge20-xSnx (8≤x≤12) glass has been undertaken. Crystallization and glass transition kinetics has been investigated under nonisothermal conditions by DSC technique. Phase separation has been observed in the material and is investigated by taking the XRD of annealed bulk samples. The material possesses good glass forming ability, high value of glass transition temperature about 420 K, and glass stability. Optical band gap and other optical constants such as refractive index and extinction coefficient have been determined. The isoelectronic substit

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30

Shi, Frank G. "Glass transition: A unified treatment." Journal of Materials Research 9, no. 7 (1994): 1908–16. http://dx.doi.org/10.1557/jmr.1994.1908.

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A unified kinetic and thermodynamic description of the glass transition in undercooled liquids at normal pressure is established. The following results are obtained for the first time: (1) The glass transition temperature Tg is determined to be in the range of Ts < Tg < Tn. Both Ts and Tn are material-dependent and each of them is characterized by a different Ω(T) = TΔslc(T)/Δslc(T) with Δhlc as the excess enthalpy and Δslc the excess entropy. (2) Being above Kauzmann's isentropic temperature, the lowest limit Ts is determined by Ω(Ts) = 1 −2/(3γ) with γ being the ratio between the total

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31

Yue, Li Jie, Jin Sheng Han, and Kun Xie. "The Microalloying Effects in Cu-Based Bulk Metallic Glasses." Materials Science Forum 688 (June 2011): 407–12. http://dx.doi.org/10.4028/www.scientific.net/msf.688.407.

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The glassy alloy rods of Cu50Zr43Al7, (Cu50Zr43Al7)100-xYx(x=2,5) and (Cu50Zr43Al7)100-xAgx(x=6,7) with diameters of 3.0 mm were prepared by copper mold suction casting method. The influence of adding Ag and Y to Cu50Zr43Al7 metallic glass on glass formation ability (GFA) and thermal stability was studied by means of X-ray diffraction analysis (XRD) and differential scanning calorimetry (DSC). The results show that Ag and Y appropriate micro-addition enhance the glass formation ability and thermal stability of the Cu-Zr-Al metallic glass. The effect of Ag is better than that of Y. The addition

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32

Roland, C. Michael. "GLASS TRANSITION IN RUBBERY MATERIALS." Rubber Chemistry and Technology 85, no. 3 (2012): 313–26. http://dx.doi.org/10.5254/rct.12.87987.

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ABSTRACT When the perturbation frequency imposed on a rubber falls within the glass transition zone of its viscoelastic spectrum, energy absorption is maximized. This phenomenon is the operative mechanism for various applications of elastomers requiring large energy dissipation. Nevertheless, a fundamental understanding of the glass transition is lacking. The diversity of properties that depend both on chemical structure and thermodynamic conditions makes modeling difficult and a first principles theory perhaps unachievable; indeed, the number of models for the glass transition seems to be inv

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33

Tong, H. J., J. P. Reid, D. L. Bones, B. P. Luo, and U. K. Krieger. "Measurements of the timescales for the mass transfer of water in glassy aerosol at low relative humidity and ambient temperature." Atmospheric Chemistry and Physics 11, no. 10 (2011): 4739–54. http://dx.doi.org/10.5194/acp-11-4739-2011.

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Abstract. The influence of glassy states and highly viscous solution phases on the timescale of aerosol particle equilibration with water vapour is examined. In particular, the kinetics of mass transfer of water between the condensed and gas phases has been studied for sucrose solution droplets under conditions above and below the glass transition relative humidity (RH). Above the glass transition, sucrose droplets are shown to equilibrate on a timescale comparable to the change in RH. Below the glass transition, the timescale for mass transfer is shown to be extremely slow, with particles rem

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34

PATEL, ASHMI T., and ARUN PRATAP. "STUDY OF GLASS TRANSITION KINETICS FOR Co66Si12B16Fe4Mo2 METALLIC GLASS." International Journal of Modern Physics: Conference Series 22 (January 2013): 321–26. http://dx.doi.org/10.1142/s2010194513010295.

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Metallic glasses have received considerable attention in comparison to normal metallic materials due to their superior physical, mechanical, electrical and magnetic properties. Understanding the glass transition kinetics of metallic alloys is of great importance in order to know its thermal stability. In the present paper, kinetics of glass transition of metallic glass Co66Si12B16Fe4Mo2 is studied using thermal analysis technique, i.e. differential scanning calorimetry (DSC), by non-isothermal heating of the sample at four different heating rates. The activation energy (E) of the glass transit

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35

Zhang, W., H. Guo, M. W. Chen, Y. Saotome, C. L. Qin, and A. Inoue. "New Au-based bulk glassy alloys with ultralow glass transition temperature." Scripta Materialia 61, no. 7 (2009): 744–47. http://dx.doi.org/10.1016/j.scriptamat.2009.06.020.

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36

Fan, J., E. I. Cooper, and C. A. Angell. "Glasses with Strong Calorimetric .beta.-Glass Transitions and the Relation to the Protein Glass Transition Problem." Journal of Physical Chemistry 98, no. 37 (1994): 9345–49. http://dx.doi.org/10.1021/j100088a041.

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37

Zamani, Nurhidayah R., Aidah Jumahat, and Rosnadiah Bahsan. "Dynamic Mechanical Analysis of Nanosilica Filled Epoxy Nanocomposites." Applied Mechanics and Materials 699 (November 2014): 239–44. http://dx.doi.org/10.4028/www.scientific.net/amm.699.239.

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In this study, Dynamic Mechanical Analyzer (DMA) was used to study the effect of nanoparticles, which is nanosilica, on glass transition temperature (Tg) of epoxy polymer. A series of epoxy based nanosilica composite with 5-25 wt% nanosilica content was prepared using mechanical stirring method. The weight fractions of nanosilica in epoxy were 5 wt%, 13 wt% and 25 wt%. 30mm x 10mm x 3mm size specimens were tested using DMA machine from room temperature up to 180oC at 2°C/min heating rate. From the analysis of the results, dynamic modulus and glass transition temperature of pure polymer and nan

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38

Xia, L., M. B. Tang, H. Xu, et al. "Kinetic nature of hard magnetic Nd50Al15Fe15Co20 bulk metallic glass with distinct glass transition." Journal of Materials Research 19, no. 5 (2004): 1307–10. http://dx.doi.org/10.1557/jmr.2004.0172.

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A hard magnetic Nd50Al15Fe15Co20 bulk metallic glass (BMG) was prepared in the shape of a rod up to 3 mm in diameter by suction casting. The glass transition and crystallization behaviors as well as their kinetic nature have been studied. In contrast to the previously reported hard magnetic Nd–Al–Fe–Co BMGs, Nd50Al15Fe15Co20 as-cast rod exhibits a distinct glass transition and multistep crystallization behaviors in the differential scanning calorimetry traces and lower coercivity. The BMG provides an ideal model for the investigation of glass transition and crystallization of hard magnetic Nd–

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39

Stoev, Krassimir, and Kenji Sakurai. "X-ray reflectivity study of the glass transition temperature of thin films." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C885. http://dx.doi.org/10.1107/s2053273314091141.

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The glass transition takes place in amorphous materials (like polymers) during heating or cooling, and can be described as reversible transition from a hard and brittle state into a rubber-like state. Although physical properties of the material change significantly during the glass transition, this is not a phase transition of the material. The temperature at which the transition between the glassy and rubbery state occurs is called the glass transition temperature, and this temperature is always lower than the melting temperature. Thermodynamically, the glass transition is associated with tr

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40

Wu, Botao, Jianrong Qiu, Nan Jiang та ін. "Optical properties of transparent alkali gallium silicate glass-ceramics containing Ni2+-doped β-Ga2O3 nanocrystals". Journal of Materials Research 22, № 12 (2007): 3410–14. http://dx.doi.org/10.1557/jmr.2007.0429.

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Broadband near-infrared (IR) luminescence in transparent alkali gallium silicate glass-ceramics containing Ni2+-doped β-Ga2O3 nanocrystals was observed. This broadband emission could be attributed to the 3T2g (3F) → 3A2g (3F) transition of octahedral Ni2+ ions in glass-ceramics. The full width at half-maximum (FWHM) of the near-IR luminescence and fluorescent lifetime of the glass-ceramic doped with 0.10 mol% NiO were 260 nm and ∼1220 μs, respectively. It is expected that transparent Ni2+-doped β-Ga2O3 glass-ceramics with this broad near-IR emission and long fluorescent lifetime have potential

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41

Xia, L., M. B. Tang, M. X. Pan, W. H. Wang, and Y. D. Dong. "Glass forming ability and magnetic properties of Nd48Al20Fe27Co5bulk metallic glass with distinct glass transition." Journal of Physics D: Applied Physics 37, no. 12 (2004): 1706–9. http://dx.doi.org/10.1088/0022-3727/37/12/017.

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BUSIELLO, G., and R. V. SABUROVA. "SOFT MODE AND SPIN-GLASS LIKE TRANSITION IN INSULATING GLASS." International Journal of Modern Physics B 13, no. 07 (1999): 819–31. http://dx.doi.org/10.1142/s0217979299000680.

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The spectrum and damping of collective excitations of a system of electric dipole centers with internal degrees of freedom in glass are calculated. It is shown that one of the collective modes becomes soft, signaling a spin-glass like phase transition in insulating glass. The contribution to the specific heat is determined. The possibility of phase transition from paraelectric to electric pseudospin glass phase in dielectric glass is considered.

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Liu, Hao, Xi Tang Wang, Bao Guo Zhang, and Zhou Fu Wang. "Influence of Composition on the Characterization and Crystallization of Calcium-Magnesium-Silicate Glass-Ceramics." Advanced Materials Research 105-106 (April 2010): 592–96. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.592.

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The effects of replacement of MgO by CaO, on the characterization and crystallization behavior of glas-ceramics in the CaO-MgO-SiO2 system were investigated by DTA, XRD and FTIR techniques and by density measurements. The results show that the glass transition temperature (Tg) and crystallization temperature (Tc) increase and glassy structural network becomes denser with increasing the CaO/MgO weight ratio. After certain heat-treatment procedure, the major crystal phases change from calcium magnesium silicate (diopside) to calcium silicate (parawollastonite) at the replace of MgO by CaO. Study

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Schmelzer, Jürn W. P., and Timur V. Tropin. "Dependence of the width of the glass transition interval on cooling and heating rates." Journal of Chemical Physics 138, no. 3 (2013): 034507. http://dx.doi.org/10.1063/1.4775802.

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Yano, Ryuzi, and Naoshi Uesugi. "Transition frequency and temperature dependences of homogeneous width of Nd3+ ion in silicate glass." Optics Communications 119, no. 5-6 (1995): 545–51. http://dx.doi.org/10.1016/0030-4018(95)00423-6.

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Li, Hai, and Rui Xiao. "Glass Transition Behavior of Wet Polymers." Materials 14, no. 4 (2021): 730. http://dx.doi.org/10.3390/ma14040730.

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We have performed a systematical investigation on the glass transition behavior of amorphous polymers with different solvent concentrations. Acrylate-based amorphous polymers are synthesized and treated by isopropyl alcohol to obtain specimens with a homogenous solvent distribution. The small strain dynamic mechanical tests are then performed to obtain the glass transition behaviors. The results show that the wet polymers even with a solvent concentration of more than 60 wt.% still exhibit a glass transition behavior, with the glass transition region shifting to lower temperatures with increas

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Mariani, Manuel Sebastian, Giorgio Parisi, and Corrado Rainone. "Calorimetric glass transition in a mean-field theory approach." Proceedings of the National Academy of Sciences 112, no. 8 (2015): 2361–66. http://dx.doi.org/10.1073/pnas.1500125112.

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The study of the properties of glass-forming liquids is difficult for many reasons. Analytic solutions of mean-field models are usually available only for systems embedded in a space with an unphysically high number of spatial dimensions; on the experimental and numerical side, the study of the properties of metastable glassy states requires thermalizing the system in the supercooled liquid phase, where the thermalization time may be extremely large. We consider here a hard-sphere mean-field model that is solvable in any number of spatial dimensions; moreover, we easily obtain thermalized conf

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Yang, Zhongmin, Shiqing Xu, Jianhu Yang, Lili Hu, and Zhonghong Jiang. "Thermal analysis and optical transition of Yb3+, Er3+ co-doped lead–germanium–tellurite glasses." Journal of Materials Research 19, no. 6 (2004): 1630–37. http://dx.doi.org/10.1557/jmr.2004.0226.

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In this article, we present a study of a new glass system: lead–germanium–tellurite glasses in the form of 0.05K2O–0.1ZnO–0.1BaO–0.2PbO–xGeO2–(0.55 - x)TeO2 with x = 0.1, 0.2, 0.3, 0.4, 0.5, and 0.55. Differential temperature analysis of this glass system shows that increasing GeO2 content raises the glass transition temperature (Tg) and suppresses the crystallization tendency in a large temperature range from Tg to the glass melting temperature. The maximum vibrational frequency is intermediate between germanate and fluoride glasses, in the range of 750 cm−1 to 820 cm−1. Subsequently, Optical

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Angelini, Maria Chiara, and Giulio Biroli. "Real space renormalization group theory of disordered models of glasses." Proceedings of the National Academy of Sciences 114, no. 13 (2017): 3328–33. http://dx.doi.org/10.1073/pnas.1613126114.

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We develop a real space renormalization group analysis of disordered models of glasses, in particular of the spin models at the origin of the random first-order transition theory. We find three fixed points, respectively, associated with the liquid state, with the critical behavior, and with the glass state. The latter two are zero-temperature ones; this provides a natural explanation of the growth of effective activation energy scale and the concomitant huge increase of relaxation time approaching the glass transition. The lower critical dimension depends on the nature of the interacting degr

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Gao, Qian, and Zengyun Jian. "Predicting the Thermodynamic Ideal Glass Transition Temperature in Glass-Forming Liquids." Materials 13, no. 9 (2020): 2151. http://dx.doi.org/10.3390/ma13092151.

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The Kauzmann temperature TK is a lower limit of glass transition temperature, and is known as the ideal thermodynamic glass transition temperature. A supercooled liquid will condense into glass before TK. Studying the ideal glass transition temperature is beneficial to understanding the essence of glass transition in glass-forming liquids. The Kauzmann temperature TK values are predicted in 38 kinds of glass-forming liquids. In order to acquire the accurate predicted TK by using a new deduced equation, we obtained the best fitting parameters of the deduced equation with the high coefficient of

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