Nonuniversality of Tricritical Behavior

1978 ◽  
Vol 41 (16) ◽  
pp. 1127-1130 ◽  
Author(s):  
Michael E. Fisher ◽  
Stéphane Sarbach
Keyword(s):  
Tricritical Behavior

scholarly journals PHASE DIAGRAMS OF THE SPIN-1 BLUME–EMERY–GRIFFITHS MODEL IN A RANDOM TRANSVERSE FIELD

2004 ◽  
Vol 18 (31n32) ◽  
pp. 4129-4142 ◽  
Author(s):  
H. EZ-ZAHRAOUY ◽  
H. MAHBOUB ◽  
A. BENYOUSSEF ◽  
M. J. OUAZZANI
Keyword(s):  
Field Theory ◽  
Phase Diagrams ◽  
Effective Field Theory ◽  
Low Temperatures ◽  
Transverse Field ◽  
Effective Field ◽  
Long Range Order ◽  
Special Value ◽  
Tricritical Behavior ◽  
Beg Model

The effect of the random quantum transverse field Ω on the tricritical behavior of the spin-1 Blume–Emery–Griffiths (BEG) model is studied using an effective field theory. It is found that the tricritical behavior depends on both the biquadratic interaction K, single-ion anisotropy Δ and the concentration p of the disorder of Ω. Indeed, there exists a special value p1 of the probability p below which the tricritical behavior disappears. In addition, at sufficiently low temperatures, the system exhibits long-range order accompanied by the tricritical behavior below a special value p2 of the probability p.

Tricritical behavior in DySb

1974 ◽  
Vol 50 (3) ◽  
pp. 199-200 ◽  
Author(s):  
P. Streit ◽  
G.E. Everett ◽  
A.W. Lawson
Keyword(s):  
Tricritical Behavior

Possible Tricritical Behavior and Anomalous Lattice Softening in van der Waals Itinerant Ferromagnet Fe3GeTe2 under High Pressure

2020 ◽  
Vol 37 (7) ◽  
pp. 076202
Author(s):  
Jie-Min Xu ◽  
Shu-Yang Wang ◽  
Wen-Jun Wang ◽  
Yong-Hui Zhou ◽  
Xu-Liang Chen ◽  
...  
Keyword(s):  
High Pressure ◽  
Van Der Waals ◽  
Itinerant Ferromagnet ◽  
Tricritical Behavior ◽  
Lattice Softening
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