Results 281 to 290 of about 10,680,380 (363)

Transition temperatures in ferroelectrics

Ferroelectrics, 1995
Abstract Two recent series of studies exemplified by Tokunaga, J. Phys. Soc. Jpn., 57, 4275 (1988); Venevtsev et al., Ferroelectrics, 130, 245 (1992) have made interesting proposals: 1) that Ferroelectrics do not have Curie temperatures much below 100 K (Tokunaga); and 2) that ferroelectrics have transition temperatures that are “quantized” in units of
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Transition temperature of BaEu2Mn2O7

Materials Letters, 1986
Abstract The existence of a phase transition was confirmed near 560 K in BaEu 2 Mn 2 O 7 by high-temperature X-ray diffractometry. The orthorhombic phase which is stable below this temperature and for stoichiometric composition transforms into the tetragonal phase without any large change along the c -axis.
Naoki Kamegashira, Shigeru Umeno
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Robust metastable skyrmions and their triangular-square lattice structural transition in a high-temperature chiral magnet.

Nature Materials, 2016
Skyrmions, topologically protected nanometric spin vortices, are being investigated extensively in various magnets. Among them, many structurally chiral cubic magnets host the triangular-lattice skyrmion crystal (SkX) as the thermodynamic equilibrium ...
K. Karube, J. White, N. Reynolds, N. Reynolds, J. Gavilano, H. Oike, A. Kikkawa, F. Kagawa, Y. Tokunaga, H. Rønnow, Y. Tokura, Y. Tokura, Y. Taguchi   +12 more
semanticscholar   +1 more source

Polyamido-imide transition temperatures

Polymer Science U.S.S.R., 1976
The transition temperatures of amorphous and crystalline polyamido-imides (PAI) have been determined by thermo-mechanical and dilatometric methods. Heating an amorphous PAI to above the glass temperature (Tg) was found to cause it to crystallize and this produces peaks on the thermomechanical and dilatometric curves.
Ye.G. Lur'e, M.D. Frenkel', E.L. Uchastkina, L.G. Kazaryan, A.Ye. Azriel'   +4 more
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Glass Transition Temperature and Other Transitions

1993
The glass transition temperature (Tg) is defined as the temperature at which a material loses its glasslike, more rigid properties and becomes rubbery and more flexible in nature. Practical definitions of Tg differ considerably among different measurement methods; therefore, specification of Tg requires indication of the method used.
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Transition Temperatures of Superconductors

Physical Review, 1953
In 1950, Frohlich and Bardeen laid the foundation for the theory of superconductivity. Today, after more than 20 years and many errors, my own included, the crucial obstacle in raising the superconducting transition temperature is substantially the same one that was foreseen by them.
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Universality of the glass transition temperature

Journal of Non-Crystalline Solids, 1994
Abstract A new relation between the glass transition temperature and material constants is presented. It shows a remarkable universality of the glass transition temperature, Tg, for very different types of structural glass. The independence of Fg from the microscopic structure is interpreted as a consequence of the cooperative nature of the glass ...
Heuer, A., Spiess, H.
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Machine Learning F-Doped Bi(Pb)–Sr–Ca–Cu–O Superconducting Transition Temperature

Journal of Superconductivity and Novel Magnetism, 2020
Yun Zhang, Xiaojie Xu
semanticscholar   +1 more source

SrS: Phase Transition Pressure, Phase Transition Temperature

2017
SrS. Temperature dependence of the B1–B2 transition pressure from PP-PW-GGA calculations within the quasiharmonic approximation [11S]
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The Superconducting Transition Temperature

1986
After the presentation of a brief survey of the principal formulae of weak- coupling and strong-coupling superconductivity, followed by discussion of the priorities under which the transition temperature is governed by atomic, band-electronic, and lattice-dynamical effects, the compositional systematics of T c in amorphous and crystalline transition ...
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