Superconducting Behavior of Tetragonal T ‘Eu2‐xCexO4±δ

1989 ◽  
Vol 169 ◽  
Author(s):  
V. J. Melim ◽  
Weimin Peng ◽  
C.W. Kimball ◽  
B. Dabrowski ◽  
Y. Zheng ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Debye Temperature ◽  
Narrow Range ◽  
Ac Susceptibility ◽  
Reducing Conditions ◽  
Susceptibility And Resistance ◽  
The Eu

AbstractEu2.xCexCuO4±δ (0 ≤ x ≤ 0.17) has been synthesized with the tetragonal T’ structure. AC susceptibility and resistance measurements show that Eu2‐xCexCuO4±δ becomes superconducting with τc∼13 K for x= 0.15 and 0.17, when prepared under reducing conditions. The 151Eu Mossbauer shift shows that the Euvalence falls into a narrow range near Eu 3+ . The temperature dependence of the Mossbauer absorption yields a Debye temperature of 319 K for the Eu ion in Eu1.85Ce0.15CuO4±δ

Temperature dependence of AC-susceptibility and resistivity of AS-cast and annealed Fe73Al5Ga2P11C5B4 ribbon

2000 ◽  
Vol 215-216 ◽  
pp. 260-263 ◽  
Author(s):  
H Sassik ◽  
M Schönhart ◽  
R Grössinger ◽  
R Sato Turtelli ◽  
A Kottar
Keyword(s):  
Temperature Dependence ◽  
Ac Susceptibility

Reflection of two-dimensionality on the temperature dependence of AC susceptibility

1997 ◽  
Vol 282-287 ◽  
pp. 1991-1992
Author(s):  
P.N. Mikheenko ◽  
J. Horvat ◽  
M. Ionescu ◽  
S.X. Dou
Keyword(s):  
Temperature Dependence ◽  
Ac Susceptibility

Amplitude of the de Haas—van Alphen effect in mercury

1972 ◽  
Vol 329 (1576) ◽  
pp. 17-34 ◽  
Keyword(s):  
Temperature Dependence ◽  
Debye Temperature ◽  
Phonon Scattering ◽  
Many Body ◽  
Temperature Dependent ◽  
Many Body Theory ◽  
Logarithmic Plot ◽  
Paradoxical Result ◽  
Body Theory ◽  
Electron Phonon Scattering

The amplitude of the de Haas-van Alphen oscillations in mercury has been studied at temperatures between 1 and 17 K and fields between 20 and 90 T. Because of the low Debye temperature of mercury, the Dingle temperature X might be expected to increase appreciably with temperature because of increased scattering of electrons by phonons. Such a temperature dependent X would also cause the appropriate logarithmic plot of amplitude against temperature to depart appreciably from linearity. Measurements of X as a function of temperature and of the temperature dependence of amplitude at a number of fields have however provided no evidence of any appreciable temperature dependence of X . This apparently paradoxical result turns out to be explicable by a recent many-body theory due to Engelsberg & Simpson of the effects of electron-phonon scattering on the de Haas-van Alphen amplitude.

scholarly journals TEMPERATURE DEPENDENCE OF HEAT CAPACITY OF ALUMINIUM, COPPER, SILICON, MAGNESIUM AND ZINC AND COMPARISON WITH DEBYE THEORY

InterConf ◽  
2021 ◽  
pp. 307-314
Author(s):  
Z. Nizomov ◽  
R. Saidzoda (Saidov) ◽  
B. Gulov ◽  
J. Sharipov
Keyword(s):  
Heat Capacity ◽  
Thermal Expansion ◽  
Crystal Lattice ◽  
Temperature Dependence ◽  
Debye Temperature ◽  
Electronic Contribution ◽  
Debye Theory ◽  
Aluminium Copper ◽  
Main Components ◽  
Lattice Component

The results of comparison of heat capacity of aluminum, copper, silicon, magnesium and zinc with Debye's theory depending on temperature are given in the paper. It was revealed that the main components of the heat capacity of metals are the lattice component; is a component due to thermal expansion and is an electronic contribution. It is proposed that when creating the theory of heat capacity, it is necessary to take into account the anharmonicity of the oscillations of atoms in the nodes of the crystal lattice and the change in Debye temperature.

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