scholarly journals Inter-grain Phase Transitions in Superconducting Ceramic YBa2Cu3O7−δ under Low Magnetic Fields

2020 ◽  
Author(s):  
Hiroyuki Deguchi ◽  
Takanori Fujii ◽  
Yuki Kato ◽  
Masaki Mito ◽  
Akihiko Hisada ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Fields ◽  
Superconducting Ceramic

Triple mixed-spin Ising model

2020 ◽  
Vol 34 (13) ◽  
pp. 2050129
Author(s):  
Erhan Albayrak
Keyword(s):  
Phase Transitions ◽  
Ising Model ◽  
Magnetic Fields ◽  
Exchange Interaction ◽  
Spin System ◽  
Bethe Lattice ◽  
Nearest Neighbors ◽  
Recursion Relations ◽  
Mixed Spin ◽  
Exchange Interaction Parameter

The A, B and C atoms with spin-1/2, spin-3/2 and spin-5/2 are joined together sequentially on the Bethe lattice in the form of ABCABC[Formula: see text] to simulate a molecule as a triple mixed-spin system. The spins are assumed to be interacting with only their nearest-neighbors via bilinear exchange interaction parameter in addition to crystal and external magnetic fields. The order-parameters are obtained in terms of exact recursion relations, then from the study of their thermal variations, the phase diagrams are calculated on the possible planes of our system. It is found that the model gives only second-order phase transitions in addition to the compensation temperatures.

Magnetic phase transitions by strong, pulsed magnetic fields at low temperatures in CuxZn1−xCr2Se4

1981 ◽  
Vol 2 (1) ◽  
pp. 67-73 ◽  
Author(s):  
S. Juszczyk ◽  
J. Krok ◽  
I. Okońska-Kozłowska ◽  
H. Broda ◽  
J. Warczewski ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Fields ◽  
Low Temperatures ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
Pulsed Magnetic Fields

scholarly journals Primordial magnetic fields from cosmological first order phase transitions

1997 ◽  
Vol 55 (8) ◽  
pp. 4582-4590 ◽  
Author(s):  
Günter Sigl ◽  
Angela V. Olinto ◽  
Karsten Jedamzik
Keyword(s):  
Phase Transitions ◽  
Magnetic Fields ◽  
First Order ◽  
Primordial Magnetic Fields ◽  
First Order Phase

scholarly journals Magnetic fields in the early Universe

2008 ◽  
Vol 4 (S259) ◽  
pp. 529-538 ◽  
Author(s):  
Eduardo Battaner ◽  
Estrella Florido
Keyword(s):  
Phase Transitions ◽  
Magnetic Fields ◽  
Early Universe ◽  
Galaxy Formation ◽  
Faraday Rotation ◽  
Large Scale ◽  
Large Scale Structure ◽  
Anisotropy Spectra ◽  
The Universe ◽  
Negligible Influence

AbstractThere is increasing evidence that intense magnetic fields exist at large redshifts. They could arise after galaxy formation or in very early processes, such as inflation or cosmological phase transitions, or both. Early co-moving magnetic strengths in the range 1-10 nG could be present at recombination. The possibilities to detect them in future CMB experiments are discussed, mainly considering their impact in the anisotropy spectra as a result of Faraday rotation and Alfven waves. Magnetic fields this magnitude could also have a non-negligible influence in determining the filamentary large scale structure of the Universe.

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