Magnetization Studies of Antiferromagnetic Interlayer Coupling in EuS-SrS Semiconductor Multilayers

Abstract

Temperature and magnetic eld dependence of magnetization of EuSSrS multilayers grown epitaxially on KCl (001) substrate is experimentally studied by superconducting magnetometry technique. In these lattice-matched semiconductor heterostructures EuS layers are ferromagnetic quantum wells whereas SrS layers are nonmagnetic spacer barriers. The multilayers composed of EuS layers with thickness 3.55 nm and SrS layers (thickness 0.5 10 nm) exhibit ferromagnetic transition at 17 K. In the multilayers with ultrathin SrS spacers (0.51 nm) a nonmonotonic temperature dependence of magnetization as well as a characteristic switching in magnetic hysteresis loops is observed. These experimental ndings are explained considering antiferromagnetic interlayer coupling between ferromagnetic EuS layers via nonmagnetic SrS spacers. The strength of this coupling is determined based on model magnetization calculations.

Compensation temperature in spin-1∕2 Ising trilayers: A Monte Carlo study

“…The development and improvement of thin film growth techniques, namely molecular-beam epitaxy (MBE) [8], metalorganic chemical vapor deposition (MOCVD) [9], pulsed laser deposition (PLD) [10,11], and atomic layer deposition (ALD) [12,13], have enabled the experimental realization of several layered materials with specific characteristics, such as bilayer [14], trilayer [15,16], and multilayer [17][18][19][20][21] systems. Nevertheless, progress in experimental investigation of these materials becomes a slow and difficult process without detailed theoretical studies to guide.…”

Monte Carlo study of an anisotropic Ising multilayer with antiferromagnetic interlayer couplings

“…In recent experimental works, we find examples of realization and study of such bilayer [13], trilayer [14,15], and multilayer [16][17][18][19][20] systems. From the theoretical stance, a bilayer system with Ising spins and no dilution has been studied via transfer matrix (TM) [21,22], renormalization group (RG) [23][24][25], mean-field approximation (MFA) [23], and Monte Carlo (MC) simulations [23,26].…”

Ferrimagnetism in the Heisenberg–Ising bilayer with magnetically non-equivalent planes

“…As far as the ferromagnetic bilayers with antiferromagnetic couplings are concerned, there are only very few theoretical works dealing with this problem [34][35][36][37] or a similar case of multilayers [38,39], to the best of our knowledge. Let us mention the existence of some recent interesting experimental realizations of the systems in question based on semiconducting compounds, both with and without dilution [40][41][42][43][44][45]. In order to fill the gap, the present paper aims at examining the thermodynamics of the anisotropic Heisenberg-Ising bilayer with antiferromagnetic interplanar coupling.…”