Relaxation phenomenon measured as dynamic specific heat in the first-order phase transition of a molecular crystal

2002 ◽  
Vol 65 (10) ◽  
Author(s):  
H. Honda ◽  
S. Tasaki ◽  
A. Chiba ◽  
H. Ogura
Keyword(s):  
Phase Transition ◽  
Specific Heat ◽  
Order Phase Transition ◽  
Molecular Crystal ◽  
Relaxation Phenomenon ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

scholarly journals Specific heat and entropy change at the first order phase transition of La(Fe-Mn-Si)13-H compounds

2015 ◽  
Vol 118 (5) ◽  
pp. 053907 ◽  
Author(s):  
Vittorio Basso ◽  
Michaela Küpferling ◽  
Carmen Curcio ◽  
Cecilia Bennati ◽  
Alexander Barzca ◽  
...  
Keyword(s):  
Phase Transition ◽  
Specific Heat ◽  
Order Phase Transition ◽  
Entropy Change ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

Specific heat at a first-order phase transition: SbSI

1981 ◽  
Vol 24 (5) ◽  
pp. 2807-2811 ◽  
Author(s):  
S. Stokka ◽  
K. Fossheim ◽  
S. Ziolkiewicz
Keyword(s):  
Phase Transition ◽  
Specific Heat ◽  
Order Phase Transition ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

Calculation of the Specific Heat for the First Order Phase Transition in NH4Br

1998 ◽  
Vol 12 (25n26) ◽  
pp. 1089-1095 ◽  
Author(s):  
H. Yurtseven ◽  
A. Yanik ◽  
W. F. Sherman
Keyword(s):  
Phase Transition ◽  
Ising Model ◽  
Specific Heat ◽  
Order Phase Transition ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase ◽  
Good Agreement ◽  
Observed Behavior

We calculate in this work the specific heat CVI using the predictions of an Ising model for the NH 4 Br crystal (T C =234 K, P=0). Our calculated CVI values are in good agreement with the experimentally observed CP data from the literature. This shows that the observed behavior of NH 4 Br can be described adequately in the lattice region under an Ising model studied here.

SPECIFIC HEAT IN MONO-CRYSTAL YBCO: λ-LIKE ANOMALIES AT 90K AND 229K

1988 ◽  
Vol 02 (05) ◽  
pp. 1171-1183 ◽  
Author(s):  
K. Fossheim ◽  
O. M. Nes ◽  
T. Lægreid ◽  
C. N. W Darlington ◽  
D. A. O'Connor ◽  
...  
Keyword(s):  
Phase Transition ◽  
Specific Heat ◽  
High Precision ◽  
Order Phase Transition ◽  
Ybco Superconductor ◽  
Superconducting Transition ◽  
First Order ◽  
Temperature Range ◽  
First Order Phase Transition ◽  
First Order Phase

The specific heat, C p , has been measured with high precision in a mono-crystal of YBa 2 Cu 3 O 7−δ (YBCO) superconductor in the temperature range 55K-300K. The measurements provide data with a relative resolution Δ C p / C p of approximately 5 · 10−4. The main conclusions are: 1) Close to the superconducting transition the specific heat shows influence of fluctuations. 2) A reversible second order or weakly first order phase transition is found to occur at T o = 229 K .

scholarly journals Gravitational wave signals of dark matter freeze-out

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Danny Marfatia ◽  
Po-Yan Tseng
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
Gravitational Waves ◽  
Order Phase Transition ◽  
First Order ◽  
Stochastic Background ◽  
First Order Phase Transition ◽  
Relic Abundance ◽  
First Order Phase ◽  
Freeze Out

Abstract We study the stochastic background of gravitational waves which accompany the sudden freeze-out of dark matter triggered by a cosmological first order phase transition that endows dark matter with mass. We consider models that produce the measured dark matter relic abundance via (1) bubble filtering, and (2) inflation and reheating, and show that gravitational waves from these mechanisms are detectable at future interferometers.

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