New phase transition pattern of fivefold twins transformed into lamellar structure in Ti3Al alloy

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yutao Liu ◽  
Ting-Hong Gao ◽  
yue gao ◽  
Lian Xin Li ◽  
Min Tan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Lamellar Structure ◽  
New Phase ◽  
Ti3al Alloy

The structures of fivefold twin (FFT) and lamellar (LAM) are the primary configurations during the crystallization of alloys. However, the co-existence of two structures in one system and conversion mechanism...

INFLUENCE OF AN EXTERNAL MAGNETIC FIELD ON THE DYNAMICS OF A NEW-PHASE NUCLEUS IN THE VICINITY OF THE FIRST-ORDER PHASE TRANSITION IN MAGNETS WITH DEFECTS PRESENT

2012 ◽  
Vol 26 (28) ◽  
pp. 1250183 ◽  
Author(s):  
VLADIMIR NAZAROV ◽  
RISHAT SHAFEEV
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
External Magnetic Field ◽  
Magnetic Anisotropy ◽  
Spin Reorientation ◽  
Critical Fields ◽  
First Order ◽  
Phase Nucleus ◽  
First Order Phase Transition ◽  
New Phase

Theoretically, with the aid of a soliton model, the evolution of a new-phase nucleus near the first-order spin-reorientation phase transition in magnets has been investigated in an external magnetic field. The influence of an external field and one-dimensional defects of magnetic anisotropy on the dynamics of such nucleus has been demonstrated. The conditions for the localization of the new-phase nucleus in the region of the magnetic anisotropy defect and for its escape from the defect have been determined. The values of the critical fields which bring about the sample magnetization reversal have been identified and estimated.

A new phase transition in NH4HSeO4 crystals

1981 ◽  
Vol 67 (2) ◽  
pp. K123-K125 ◽  
Author(s):  
J. Majszczyk ◽  
J. Rączka ◽  
Z. Czapla
Keyword(s):  
Phase Transition ◽  
New Phase

Dielectric and Thermal Studies on New Phase Transition of CsHSeO4

1982 ◽  
Vol 51 (1) ◽  
pp. 199-202 ◽  
Author(s):  
Saburo Yokota ◽  
Nobuhiro Takanohashi ◽  
Toshio Osaka ◽  
Yasuharu Makita
Keyword(s):  
Phase Transition ◽  
Thermal Studies ◽  
New Phase

scholarly journals Application of Computer Simulation to Study the Features of the Austenite Isothermal Transformation in Steels

2019 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Yu.V. Yudin ◽  
M.V. Maisuradze ◽  
A.A. Kuklina ◽  
P.D. Lebedev
Keyword(s):  
Phase Transition ◽  
Computer Simulation ◽  
Solid State ◽  
Isothermal Transformation ◽  
Avrami Equation ◽  
Kinetic Curves ◽  
Simulation Results ◽  
Experimental Kinetics ◽  
Kinetics Of ◽  
New Phase

An algorithm was developed for the simulation of a phase transition in solid state whichmakes it possible to obtain the kinetic curves of transformation under different initialconditions (the number and arrangement of new phase nuclei, the distance betweenthe nearest nuclei). The simulation results were analyzed using the Kolmogorov-Johnson-Mehl-Avrami equation and the corresponding coefficients were determined.The correlation between the simulation results and the experimental kinetics of theaustenite isothermal transformation in alloyed steels was shown.

FISDW in quasi-one dimensional organic conductors with the dimerized gap due to anion ordering

2002 ◽  
Vol 12 (9) ◽  
pp. 381-384
Author(s):  
N. Matsunaga ◽  
A. Ayari ◽  
P. Moncea ◽  
K. Yamashita ◽  
A. Ishikawa ◽  
...  
Keyword(s):  
Phase Transition ◽  
Ground State ◽  
Quantum Hall ◽  
Organic Conductors ◽  
Hall Resistance ◽  
Cooling Rates ◽  
One Dimensional ◽  
Stable Quantum ◽  
New Phase ◽  
Quantum Hall State

Magnetoresistance and Hall resistance measurements have been carried out in the FISDW phase of deuterated (TMTSF)2C1O4 for various cooling rates through the anion ordering temperature. The Hall resistance in the intermediate cooled state, observed a very stable quantum Hall state above 9.0 T for slowly cooled, shows a step-like change from the phase between 10 and 17 T to the phase between 20 and 25 T with hysteresis between 14 and 21 T. This result suggests that there is a new phase transition around 15 T in deuterated (TMTSF)4ClO4. A possible ground state of the FISDW phase of (TMTSF)2C1O4 for various cooling rates is discussed from the viewpoint of the peculiar SDW nesting vector stabilized by the dimerized gap due to anion ordering.

scholarly journals New Phase Transition Related to the Black Hole’s Topological Charge

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Shan-Quan Lan ◽  
Gu-Qiang Li ◽  
Jie-Xiong Mo ◽  
Xiao-Bao Xu
Keyword(s):  
Phase Transition ◽  
Specific Heat ◽  
Topological Charge ◽  
Energy Analysis ◽  
Van Der Waals ◽  
Tail Behavior ◽  
Maxwell Theory ◽  
Free Energy Analysis ◽  
Physical Quantities ◽  
New Phase

The topological charge ϵ of AdS black hole is introduced by Tian et al. in their papers, where a complete thermodynamic first law is obtained. In this paper, we investigate a new phase transition related to the topological charge in Einstein-Maxwell theory. Firstly, we derive the explicit solutions corresponding to the divergence of specific heat Cϵ and determine the phase transition critical point. Secondly, the T-r curve and T-S curve are investigated and they exhibit an interesting van der Waals system’s behavior. Critical physical quantities are also obtained which are consistent with those derived from the specific heat analysis. Thirdly, a van der Waals system’s swallow tail behavior is observed when ϵ>ϵc in the F-T graph. What is more, the analytic phase transition coexistence lines are obtained by using the Maxwell equal area law and free energy analysis, the results of which are consistent with each other.

On the nature of a new phase transition in α-MnS

1977 ◽  
Vol 24 (3) ◽  
pp. 205-209 ◽  
Author(s):  
H.H. Heikens ◽  
G.A. Wiegers ◽  
C.F. van Bruggen
Keyword(s):  
Phase Transition ◽  
New Phase
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