scholarly journals Phase transition in magnetic ultra-thin films

2019 ◽  
Vol 128 (1D) ◽  
Author(s):  
Phạm Hương Thảo ◽  
Ngô Thị Thuận ◽  
Phan Thị Hàn Ny
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Integral Method ◽  
Functional Integral ◽  
Spin Fluctuations ◽  
Surface Anisotropy ◽  
Functional Integral Method

<p>In this paper, we study influence of surface anisotropy on the phase transition in antiferromagnetic and ferromagnetic ultra-thin films by using functional integral method. Besides, spin fluctuations are also given to illustrate for these phase transitions. We find that the phase transition temperature of the ultra-thin films may be higher or lower than the phase transition temperature of the corresponding bulk systems, which depends on the surface anisotropy. Moreover, we also determine crossover points at which the phase transition temperature is not influenced by the thickness of the thin film.</p>

scholarly journals Modulating the phase transition temperature of giant magnetocaloric thin films by ion irradiation

2017 ◽  
Vol 1 (6) ◽  
Author(s):  
S. Cervera ◽  
M. Trassinelli ◽  
M. Marangolo ◽  
C. Carrétéro ◽  
V. Garcia ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Ion Irradiation

scholarly journals Mg/W-codoped vanadium dioxide thin films with enhanced visible transmittance and low phase transition temperature

2015 ◽  
Vol 3 (26) ◽  
pp. 6771-6777 ◽  
Author(s):  
Ning Wang ◽  
Shiyu Liu ◽  
X. T. Zeng ◽  
Shlomo Magdassi ◽  
Yi Long
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Transition Temperature ◽  
Charge Carrier ◽  
Band Gap ◽  
Phase Transition Temperature ◽  
Vanadium Dioxide ◽  
Visible Transmittance ◽  
Vanadium Dioxide Thin Films

Mg2+ and W6+ cations were first codoped into the VO2 lattice, resulting in a widened photon band gap and h+/e− charge carrier accumulation. These effects enhanced the thermochromic performance with a high visible transmission (∼80%) and a low phase transition temperature (∼30 °C).

Order Parameter Distribution and Phase Transition Temperature for a Thin Film With Asymmetric Boundaries

2012 ◽  
Vol 437 (1) ◽  
pp. 8-15 ◽  
Author(s):  
K. R. Gabbasova ◽  
A. L. Pirozerskii ◽  
E. V. Charnaya ◽  
Cheng Tien ◽  
A. S. Bugaev
Keyword(s):  
Thin Film ◽  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Order Parameter ◽  
Parameter Distribution
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