RANDOM SURFACE ANISOTROPY AND THE MAGNETIZATION OF EPITAXIALLY GROWN THIN FILMS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1695-C8-1696 ◽  
Author(s):  
J. R. Cullen ◽  
K. B. Hathaway
Keyword(s):  
Thin Films ◽  
Surface Anisotropy ◽  
Random Surface

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 SWR Studies of Higher-Order Surface Anisotropy Terms in (Ga,Mn)As Thin Films

2018 ◽  
Vol 133 (3) ◽  
pp. 635-638
Author(s):  
H. Puszkarski ◽  
P. Tomczak ◽  
H.T. Diep
Keyword(s):  
Thin Films ◽  
Higher Order ◽  
Surface Anisotropy ◽  
Order Surface

scholarly journals Magneto-Electric Control of Surface Anisotropy and Nucleation Modes in L1 $_{0}$-CoPt Thin Films

2014 ◽  
Vol 5 ◽  
pp. 1-4
Author(s):  
Priyanka Manchanda ◽  
Pankaj Kumar ◽  
Hans Fangohr ◽  
David J. Sellmyer ◽  
Arti Kashyap ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Anisotropy ◽  
Electric Control

scholarly journals The Influence of Thickness on the Magnetic Properties of Nanocrystalline Thin Films: A Computational Approach

Computation ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 45
Author(s):  
Jose Darío Agudelo-Giraldo ◽  
Francy Nelly Jiménez-García ◽  
Elisabeth Restrepo-Parra
Keyword(s):  
Thin Films ◽  
Zeeman Effect ◽  
Three Dimensional ◽  
Great Influence ◽  
Dipolar Interaction ◽  
Magnetic Behaviour ◽  
Blocking Temperature ◽  
Surface Anisotropy ◽  
Polycrystalline Thin Films ◽  
Plane Anisotropy

A study of the magnetic behaviour of polycrystalline thin films as a function of their thickness is presented in this work. The grain volume was kept approximately constant in the virtual samples. The model includes the exchange interaction, magneto-crystalline anisotropy, surface anisotropy, boundary grain anisotropy, dipolar interaction, and Zeeman effect. The thickness-dependence of the critical temperature, blocking temperature, and irreversibility temperature are presented. Surface anisotropy exerts a great influence at very low thicknesses, producing a monodomain regime. As the thickness increases, the dipolar interaction produces a coupling in-plane of single domains per grain which favours superparamagnetic states. At higher thicknesses, the effects of the in-plane anisotropy produced by dipolar interaction and surface anisotropy decrease dramatically. As a result, the superparamagnetic states present three-dimensional local anisotropies by the grain.

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